U S HEALTHCARE INC
8-K, 1996-04-02
HOSPITAL & MEDICAL SERVICE PLANS
Previous: ALCIDE CORP, 10-Q, 1996-04-02
Next: COLONY BANKCORP INC, DEF 14A, 1996-04-02







                        SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, D.C. 20549

                                     FORM 8-K
                                  CURRENT REPORT

                        Pursuant to Section 13 or 15(d) of the
                           Securities Exchange Act of 1934

                                MARCH 30, 1996
                      _________________________________
                      (Date of earliest event reported)

                            U.S. HEALTHCARE, INC.
          ______________________________________________________
            (Exact name of Registrant as specified in its charter)

         PENNSYLVANIA            0-11531                 23-2229683
         ______________     _____________________     __________________
          (State of          (Commission File No.)     (IRS Employer
          Incorporation)                              Identification No.)

                980 JOLLY ROAD, BLUE BELL, PENNSYLVANIA, 19422
        ____________________________________________________________
        (Address of principal executive offices, including zip code)

                                (215) 628-4800
             ____________________________________________________
             (Registrant's telephone number, including area code)

                                NOT APPLICABLE
       _____________________________________________________________
       (Former name or former address, if changed since last report)


          ITEM 5.   OTHER EVENTS.

                    On March 30, 1996, U.S. Healthcare, Inc. (the
          "Company"), entered into an Agreement and Plan of Merger
          (the "Merger Agreement") with Aetna Life and Casualty
          Company ("Aetna"), Butterfly, Inc. ("Parent"), a
          Connecticut corporation owned 50% by Aetna and 50% by the
          Company, New Merger Corporation ("U.S. Healthcare Sub"),
          a wholly-owned subsidiary of Parent, and Antelope Sub,
          Inc. ("Aetna Sub"), a wholly-owned subsidiary of Parent,
          pursuant to which (x) U.S. Healthcare Sub will merge with
          and into the Company, with the Company surviving as a
          wholly-owned subsidiary of Parent (the "U.S. Healthcare
          Merger"), and (y) Aetna Sub will merge with and into
          Aetna, with Aetna surviving as a wholly-owned subsidiary
          of Parent (the "Aetna Merger," and together with the U.S.
          Healthcare Merger, the "Mergers").  As a result of the
          Mergers, each of the Company and Aetna will be wholly-
          owned subsidiaries of a newly formed holding company.  A
          copy of the Merger Agreement is attached as Exhibit 99.1
          hereto and is incorporated herein by reference.
           
                    Pursuant to the U.S. Healthcare Merger and the
          Merger Agreement, each share of Common Stock, par value
          $.005 per share, of the Company (the "Company Common
          Stock") and each share of Class B Stock, par value $.005
          per share, of Company (the "Company Class B Stock," and
          together with the Company Common Stock, the "Company
          Stock") outstanding immediately prior to the date of the
          Mergers (the "Merger Date") shall (except for shares of
          Company Stock held by the Company as treasury stock or
          owned by Aetna or any subsidiary of Aetna immediately
          prior to the Merger Date and as otherwise provided for in
          the Merger Agreement and as to which dissenters rights
          have been exercised in accordance with and subject to the
          provisions of Pennsylvania law) be converted into the
          right to receive (a) $34.20 in cash without interest, (b)
          0.2246 shares of Parent Common Capital Stock (the "Parent
          Common Stock"), and (c) 0.0749 shares of Class C Non-
          Voting Preferred Stock of Parent.

                    Pursuant to the Aetna Merger and the Merger
          Agreement, each share of common capital stock, without
          par value, of Aetna (the "Aetna Stock") outstanding
          immediately prior to the Merger Date (except for shares
          of Aetna Stock held by Aetna as treasury stock or owned
          by the Company or any subsidiary of the Company
          immediately prior to the Merger Date and except for
          shares of Aetna Stock as to which dissenters rights have
          been exercised in accordance with and subject to the
          provisions of Connecticut law) will be converted into the
          right to receive one share of Parent Common Stock.
           
                    In addition, on March 30, 1996, Aetna Life 
          Insurance Company, Aetna Life Insurance and Annuity 
          Company and Leonard Abramson, Chairman of the Company
          ("Shareholder"), entered into a Voting Agreement (the
          "Voting Agreement") pursuant to which Shareholder agreed,
          among other things, to vote all of his Class B Stock of
          the Company, representing approximately 83.8% of the
          voting power of the outstanding capital stock of the
          Company, in favor of the U.S. Healthcare Merger and the
          Merger Agreement and against any competing proposal for
          the Company with respect to a merger or similar business
          combination.  A copy of the Voting Agreement is attached
          hereto as Exhibit 99.2 and is incorporated herein by
          reference.

                    Also on March 30, 1996, Parent and Shareholder 
          entered into a Registration Rights Agreement (the
          "Registration Rights Agreement").  A copy of the
          Registration Rights Agreement is attached hereto as
          Exhibit 99.3 and is incorporated herein by reference.

                    Also on March 30, 1996, Parent and Shareholder
          entered into an agreement (the "Agreement").  A copy of
          the Agreement is attached hereto as Exhibit 99.4 and is
          incorporated herein by reference.

                    In connection with the Merger Agreement and the
          transactions contemplated thereby, on March 30, 1996, six
          senior executives of the Company, Joseph Sebastianelli,
          Michael Cardillo, David Simon, James Dickerson, Arthur
          Leibowitz and Timothy Nolan each entered into a five-year
          employment agreement with the Company (the "Executive
          Employment Agreements").  Forms of such Executive
          Employment Agreements are attached hereto as Exhibit
          99.5, Exhibit 99.6, Exhibit 99.7, Exhibit 99.8, Exhibit
          99.9, and Exhibit 99.10, respectively, and such
          Employment Agreements are incorporated herein by
          reference.
           
                    On April 1, 1996, the Company and Aetna issued
          a joint press release announcing, among other things, the
          execution of the Merger Agreement.  A copy of such press
          release is filed as Exhibit 99.11 hereto and is
          incorporated herein by reference.

          ITEM 7.   FINANCIAL STATEMENTS, PRO FORMA FINANCIAL
                    INFORMATION AND EXHIBITS.

          (a)  FINANCIAL STATEMENTS OF THE BUSINESSES ACQUIRED.

               Not Applicable.

          (b)  PRO FORMA FINANCIAL INFORMATION.

               Not Applicable.

          (c)  EXHIBITS:

          EX. NO.        DESCRIPTION

          99.1           Agreement and Plan of Merger, dated as of
                         March 30, 1996, by and among U.S.
                         Healthcare, Inc., Aetna Life and Casualty
                         Company, Butterfly, Inc., New Merger
                         Corporation and Antelope Sub, Inc.

          99.2           Voting Agreement, dated as of
                         March 30, 1996, by and between Aetna Life
                         and Casualty Company and Leonard Abramson.

          99.3           Registration Rights Agreement, dated as of
                         March 30, 1996, by and between Aetna Life
                         and Casualty Company and Leonard Abramson.

          99.4           Agreement, dated as of March 30, 1996, by
                         and between Butterfly, Inc. and Leonard Abramson.

          99.5           Form of Employment Agreement, dated as of
                         March 30, 1996, by and between U.S.
                         Healthcare, Inc. and John Sebastianelli.

          99.6           Form of Employment Agreement, dated as of
                         March 30, 1996, by and between U.S.
                         Healthcare, Inc. and Michael Cardillo.

          99.7           Form of Employment Agreement, dated as of
                         March 30, 1996, by and between U.S.
                         Healthcare, Inc. and David Simon.

          99.8           Form of Employment Agreement, dated as of
                         March 30, 1996, by and between U.S.
                         Healthcare, Inc. and James Dickerson.

          99.9           Form of Employment Agreement, dated as of
                         March 30, 1996, by and between U.S.
                         Healthcare, Inc. and Arthur Leibowitz.

          99.10          Form of Employment Agreement, dated as of
                         March 30, 1996, by and between U.S.
                         Healthcare, Inc. and Timothy Nolan.
           
          99.11          Text of Press Release issued by U.S.
                         Healthcare, Inc. and Aetna Life and
                         Casualty Company on April 1, 1996.


                                  SIGNATURE

                    Pursuant to the requirements of the Securities
          Exchange Act of 1934, the Company has duly caused this
          report to be signed on its behalf by the undersigned
          hereunto duly authorized.

          Dated:  April 2, 1996

                                   U.S. HEALTHCARE, INC.

                                   By:  /s/ James H. Dickerson
                                        ----------------------
                                        James H. Dickerson
                                        Chief Financial Officer


                                EXHIBIT INDEX

          EX. NO.        DESCRIPTION

          99.1           Agreement and Plan of Merger, dated as of
                         March 30, 1996, by and among U.S.
                         Healthcare, Inc., Aetna Life and Casualty
                         Company, Butterfly, Inc., New Merger
                         Corporation and Antelope Sub, Inc.

          99.2           Voting Agreement, dated as of
                         March 30, 1996, by and between Aetna Life
                         and Casualty Company and Leonard Abramson.

          99.3           Registration Rights Agreement, dated as of
                         March 30, 1996, by and between Aetna Life
                         and Casualty Company and Leonard Abramson.

          99.4           Agreement, dated as of March 30, 1996, by
                         and between Butterfly, Inc. and Leonard Abramson.

          99.5           Form of Employment Agreement, dated as of
                         March 30, 1996, by and between U.S.
                         Healthcare, Inc. and John Sebastianelli.

          99.6           Form of Employment Agreement, dated as of
                         March 30, 1996, by and between U.S.
                         Healthcare, Inc. and Michael Cardillo.

          99.7           Form of Employment Agreement, dated as of
                         March 30, 1996, by and between U.S.
                         Healthcare, Inc. and David Simon.

          99.8           Form of Employment Agreement, dated as of
                         March 30, 1996, by and between U.S.
                         Healthcare, Inc. and James Dickerson.

          99.9           Form of Employment Agreement, dated as of
                         March 30, 1996, by and between U.S.
                         Healthcare, Inc. and Arthur Leibowitz.

          99.10          Form of Employment Agreement, dated as of
                         March 30, 1996, by and between U.S.
                         Healthcare, Inc. and Timothy Nolan.
           
          99.11          Text of Press Release issued by U.S.
                         Healthcare, Inc. and Aetna Life and
                         Casualty Company on April 1, 1996.






                                                     CONFORMED COPY

                         AGREEMENT AND PLAN OF MERGER

                                 dated as of

                                March 30, 1996

                                    among

                       AETNA LIFE AND CASUALTY COMPANY

                            U.S. HEALTHCARE, INC.

                               BUTTERFLY, INC.,

                              ANTELOPE SUB, INC.

                                     AND

                            NEW MERGER CORPORATION



                             TABLE OF CONTENTS(1)

                                                               Page

                                  ARTICLE 1

                                 THE MERGERS

        SECTION 1.1.  U.S. Healthcare Sub Merger  . . . . . . .   1
        SECTION 1.2.  Aetna Sub Merger. . . . . . . . . . . . .   4
        SECTION 1.3.  Surrender and Payment . . . . . . . . . .   5
        SECTION 1.4.  Cancellation of Parent Stock  . . . . . .   7
        SECTION 1.5.  The Merger Date . . . . . . . . . . . . .   7
        SECTION 1.6.  Dissenting Shares . . . . . . . . . . . .   8
        SECTION 1.7.  Stock Options of U.S.
                        Healthcare; Restricted Stock  . . . . .   9
        SECTION 1.8.  Stock Options of Aetna  . . . . . . . . .  11
        SECTION 1.9.  Adjustments . . . . . . . . . . . . . . .  12
        SECTION 1.10. Fractional Shares . . . . . . . . . . . .  12

                                  ARTICLE 2

                          THE SURVIVING CORPORATIONS

        SECTION 2.1.  Articles and Certificate of
                        Incorporation; Bylaws . . . . . . . . .  13
        SECTION 2.2.  Directors and Officers  . . . . . . . . .  13

                                  ARTICLE 3

                        REPRESENTATIONS AND WARRANTIES
                              OF U.S. HEALTHCARE

        SECTION 3.1.  Corporate Existence and Power . . . . . .  14
        SECTION 3.2.  Corporate Authorization . . . . . . . . .  14
        SECTION 3.3.  Governmental Authorization  . . . . . . .  15
        SECTION 3.4.  Non-Contravention . . . . . . . . . . . .  15
        SECTION 3.5.  Capitalization  . . . . . . . . . . . . .  16
        SECTION 3.6.  Subsidiaries  . . . . . . . . . . . . . .  17
        SECTION 3.7.  SEC Filings . . . . . . . . . . . . . . .  17
        SECTION 3.8.  Financial Statements. . . . . . . . . . .  18
        SECTION 3.9.  Disclosure Documents. . . . . . . . . . .  18
        SECTION 3.10. Information Supplied  . . . . . . . . . .  19
        SECTION 3.11. Absence of Certain Changes  . . . . . . .  20
        SECTION 3.12. No Undisclosed Material
                        Liabilities . . . . . . . . . . . . . .  23
        SECTION 3.13. Litigation; Investigations  . . . . . . .  24
        SECTION 3.14. Taxes . . . . . . . . . . . . . . . . . .  24
        SECTION 3.15. ERISA . . . . . . . . . . . . . . . . . .  26
        SECTION 3.16. Permits; Compliance with Laws . . . . . .  29
        SECTION 3.17. Finders' Fees . . . . . . . . . . . . . .  30
        SECTION 3.18. Intellectual Property Rights  . . . . . .  30
        SECTION 3.19. Takeover Statutes . . . . . . . . . . . .  31
        SECTION 3.20. Fairness Opinion  . . . . . . . . . . . .  31

                              
        
       (1)  The Table of Contents is not a part of this Agreement.  


        SECTION 4.1.  Corporate Existence and Power . . . . . .  32
        SECTION 4.2.  Corporate Authorization . . . . . . . . .  32
        SECTION 4.3.  Governmental Authorization  . . . . . . .  33
        SECTION 4.4.  Non-Contravention . . . . . . . . . . . .  33
        SECTION 4.5.  Capitalization  . . . . . . . . . . . . .  34
        SECTION 4.6.  SEC Filings . . . . . . . . . . . . . . .  34
        SECTION 4.7.  Financial Statements  . . . . . . . . . .  34
        SECTION 4.8.  Disclosure Documents  . . . . . . . . . .  35
        SECTION 4.9.  Information Supplied  . . . . . . . . . .  35
        SECTION 4.10. Absence of Certain Changes  . . . . . . .  36
        SECTION 4.11. No Undisclosed Material
                        Liabilities . . . . . . . . . . . . . .  38
        SECTION 4.12. Litigation; Investigations  . . . . . . .  39
        SECTION 4.13. Subsidiaries  . . . . . . . . . . . . . .  39
        SECTION 4.14. Taxes . . . . . . . . . . . . . . . . . .  40
        SECTION 4.15. ERISA . . . . . . . . . . . . . . . . . .  41
        SECTION 4.16. Permits; Compliance with Laws . . . . . .  42
        SECTION 4.17. Intellectual Property Rights  . . . . . .  43
        SECTION 4.18. Fairness Opinions . . . . . . . . . . . .  44

                                  ARTICLE 5

                         COVENANTS OF U.S. HEALTHCARE

        SECTION 5.1.  Conduct of U.S. Healthcare  . . . . . . .  44
        SECTION 5.2.  Shareholder Meeting; Proxy
                        Material  . . . . . . . . . . . . . . .  48
        SECTION 5.3.  Access to Information . . . . . . . . . .  49
        SECTION 5.4.  Other Offers Relating to U.S.
                        Healthcare  . . . . . . . . . . . . . .  49
        SECTION 5.5.  Notices of Certain Events . . . . . . . .  51
        SECTION 5.6.  Fiduciary Matters . . . . . . . . . . . .  51

                                  ARTICLE 6

                              COVENANTS OF AETNA

        SECTION 6.1.  Voting of U.S. Healthcare Stock . . . . .  52
        SECTION 6.2.  Shareholder Meeting; Proxy
                        Materials . . . . . . . . . . . . . . .  52
        SECTION 6.3.  Access to Information . . . . . . . . . .  53
        SECTION 6.4.  Notices of Certain Events . . . . . . . .  53
        SECTION 6.5.  Certain Corporate Actions . . . . . . . .  53
        SECTION 6.6.  Other Offers Relating to Aetna  . . . . .  56
        SECTION 6.7.  Amendment of the Stock Purchase
                        Agreement . . . . . . . . . . . . . . .  57
        SECTION 6.8.  Dividends . . . . . . . . . . . . . . . .  57

                                  ARTICLE 7

                             COVENANTS OF AETNA,

                          U.S. HEALTHCARE AND PARENT

        SECTION 7.1.  Best Efforts  . . . . . . . . . . . . . .  58
        SECTION 7.2.  Cooperation . . . . . . . . . . . . . . .  58
        SECTION 7.3.  Public Announcements  . . . . . . . . . .  58
        SECTION 7.4.  Further Assurances  . . . . . . . . . . .  59
        SECTION 7.5.  Rule 145 Affiliates . . . . . . . . . . .  59
        SECTION 7.6.  Director and Officer Liability  . . . . .  59
        SECTION 7.7.  Subsidiary Agreements . . . . . . . . . .  62
        SECTION 7.8.  Plans Following the Closing . . . . . . .  62
        SECTION 7.9.  Voting of Shares  . . . . . . . . . . . .  62
        SECTION 7.10. Form S-4  . . . . . . . . . . . . . . . .  62
        SECTION 7.11. Certain Corporate Matters with
                        Respect to Parent . . . . . . . . . . .  62
        SECTION 7.12. Governmental Authorization  . . . . . . .  65
        SECTION 7.13. Disclosure Documents  . . . . . . . . . .  65
        SECTION 7.14. Listing of Stock  . . . . . . . . . . . .  65

                                  ARTICLE 8

                          CONDITIONS TO THE MERGERS

        SECTION 8.1.  Conditions to the Obligations of
                        Each Party  . . . . . . . . . . . . . .  65
        SECTION 8.2.  Conditions to the Obligations of
                        Aetna . . . . . . . . . . . . . . . . .  67
        SECTION 8.3.  Conditions to the Obligations of
                        U.S. Healthcare . . . . . . . . . . . .  68

                                  ARTICLE 9

                                 TERMINATION

        SECTION 9.1.  Termination . . . . . . . . . . . . . . .  69
        SECTION 9.2.  Effect of Termination . . . . . . . . . .  71

                                  ARTICLE 10

                                MISCELLANEOUS

        SECTION 10.1.  Notices  . . . . . . . . . . . . . . . .  71
        SECTION 10.2.  Entire Agreement; Survival of
                        Representations and
                        Warranties  . . . . . . . . . . . . . .  72
        SECTION 10.3.  Amendments; No Waivers . . . . . . . . .  72
        SECTION 10.4.  Expenses . . . . . . . . . . . . . . . .  73
        SECTION 10.5.  Successors and Assigns . . . . . . . . .  74
        SECTION 10.6.  Governing Law  . . . . . . . . . . . . .  74
        SECTION 10.7.  Jurisdiction . . . . . . . . . . . . . .  74
        SECTION 10.8.  Counterparts; Effectiveness  . . . . . .  75

             Exhibit A        Form of Designations, Rights and
                                 Preferences of Parent Preferred
                                 Stock

             Exhibit B        Forms of Affiliate Letters


                             TABLE OF DEFINITIONS

           Term                                            Section

           1933 Act                                         1.7(d)
           1933 Act Affiliates                              7.5
           1934 Act                                         1.7(a)
           Acquisition Proposal                             5.4
           Aetna                                            preamble
           Aetna Acquisition Proposal                       6.6
           Aetna Balance Sheet                              4.7
           Aetna Balance Sheet Date                         4.7
           Aetna Benefit Arrangements                       4.15(c)
           Aetna Certificate of Merger                      1.5
           Aetna Common Stock                               4.5
           Aetna Class A Stock                              4.5
           Aetna Class B Stock                              4.5
           Aetna Class C Stock                              4.5
           Aetna Disclosure Documents                       4.8(a)
           Aetna Employee Plan                              4.15(a)
           Aetna Health Operations                          4.10(d)
           Aetna Merger Consideration                       1.2(b)
           Aetna Permits                                    4.16(a)
           Aetna Proxy Statement                            4.8(a)
           Aetna Shareholder Meeting                        6.2(a)
           Aetna Software                                   4.17(b)
           Aetna Stock                                      1.2(b)
           Aetna Stock Option                               1.8(a)
           Aetna Sub                                        preamble
           Aetna Sub Common Stock                           1.2(b)
           Aetna Sub Merger                                 1.2(a)
           Aetna Subsidiary Securities                      4.13(b)
           Aetna Substitute Option                          1.8(a)
           Aetna Surviving Corporation                      1.2(a)
           Aetna Surviving Corporation Common Stock         1.2(b)
           Aetna 10-K                                       4.6(a)
           Affiliate                                        1.1(b)
           Average Closing Stock Price                      8.3(b)
           Cash Consideration                               1.1(b)
           Claim                                            7.6(a)
           Class B Stock                                    1.1(b)
           Code                                             preamble
           Common Stock                                     1.1(b)
           Confidentiality Agreement                        5.4
           Connecticut Law                                  1.2(b)
           The Consolidated Health Operations               7.11(c)
           Co-Presidents                                    7.11(c)
           D&O Insurance                                    7.6(d)
           Employee Benefit Plan                            3.15(a)
           ERISA                                            3.15(a)
           ERISA Affiliate                                  3.15(a)
           Excess Shares                                    1.10
           Exchange Agent                                   1.3(a)
           Form S-4                                         7.10
           HSR Act                                          3.3
           Indemnified Party                                7.6(a)
           Initial Number of U.S. Healthcare Option Shares  1.7(a)(i)
           Lien                                             3.4
           Material Adverse Effect                          3.1
           Mergers                                          1.4
           Merger Date                                      1.5
           Merger Consideration                             1.1(b)
           Multiemployer Plan                               3.15(b)
           New Annual Dividend                              6.8
           NYSE                                             1.10
           Parent                                           preamble
           Parent Common Stock                              1.1(b)
           Parent Disclosure Documents                      7.13
           Parent Preferred Stock                           1.1(b)
           Pennsylvania Law                                 1.1(b)
           Pension Plans                                    3.15(a)
           Person                                           1.3(c)
           Pre-Merger Matters                               7.6(a)
           Principal Shareholder                            7.11(b)
           SEC                                              1.7(d)
           Scheduled Contracts                              7.7
           Specified U.S. Healthcare Officer                3.11(j)
           Stock Purchase Agreement                         8.1(i)
           Subject Company                                  7.5
           Subsidiary                                       1.1(b)
           Taxes                                            3.14(k)
           Taxing Authorities                               3.14(k)
           Tax Return                                       3.14(k)
           U.S. Healthcare                                  preamble
           U.S. Healthcare Articles of Merger               1.5
           U.S. Healthcare Balance Sheet                    3.8
           U.S. Healthcare Balance Sheet Date               3.8
           U.S. Healthcare Benefit Arrangements             3.15(e)
           U.S. Healthcare Designees                        7.11(b)
           U.S. Healthcare Disclosure Documents             3.9(a)
           U.S. Healthcare Employee Stock Option            1.7(a)
           U.S. Healthcare Merger Consideration             1.1(b)
           U.S. Healthcare Non-Employee Stock Option        1.7(a)
           U.S. Healthcare Permits                          3.16(a)
           U.S. Healthcare Proxy Statement                  3.9(a)
           U.S. Healthcare Restricted Stock                 1.7(b)
           U.S. Healthcare Securities                       3.5
           U.S. Healthcare Shareholder Meeting              5.2(a)
           U.S. Healthcare Software                         3.18(b)
           U.S. Healthcare Stock                            1.1(b)
           U.S. Healthcare Stock Option                     1.7(a)
           U.S. Healthcare Sub                              preamble
           U.S. Healthcare Sub Common Stock                 1.1(b)
           U.S. Healthcare Sub Merger                       1.1(a)
           U.S. Healthcare Substitute Option                1.7(a)(i)
           U.S. Healthcare Surviving Corporation            1.1(a)
           U.S. Healthcare Surviving Corporation Common     1.1(b)
            Stock
           U.S. Healthcare 10-K                             3.6(a)
           Voting Agreement                                 9.1(d



                         AGREEMENT AND PLAN OF MERGER

                  AGREEMENT AND PLAN OF MERGER dated as of March
          30, 1996 among Aetna Life and Casualty Company, a
          Connecticut insurance corporation ("AETNA"), U.S.
          Healthcare, Inc., a Pennsylvania corporation ("U.S.
          HEALTHCARE"), Butterfly, Inc., a Connecticut corporation
          ("PARENT"), Antelope Sub, Inc., a Connecticut corporation
          and a wholly-owned subsidiary of Parent ("AETNA SUB"),
          and New Merger Corporation, a Pennsylvania corporation
          and a wholly-owned subsidiary of Parent ("U.S. HEALTHCARE
          SUB").

                  WHEREAS, the respective Boards of Directors of
          Aetna and U.S. Healthcare have determined that it is in
          the best interests of their respective shareholders to
          combine their health businesses and to enter into this
          Agreement; 

                  WHEREAS, the respective Boards of Directors of
          Aetna and U.S. Healthcare have approved this Agreement
          and the mergers contemplated hereby; and

                  WHEREAS, for United States federal income tax
          purposes, it is intended that the transactions
          contemplated by this Agreement qualify as transfers
          subject to Section 351(a) of the Internal Revenue Code of
          1986, as amended, and the rules and regulations
          promulgated thereunder (the "CODE") and that the
          shareholders of U.S. Healthcare be treated as if they
          transferred their U.S. Healthcare Stock to Parent in
          exchange for the U.S. Healthcare Merger Consideration and
          that the shareholders of Aetna be treated as if they
          transferred their Aetna Stock to Parent in exchange for
          the Aetna Merger Consideration;

                  NOW, THEREFORE, in consideration of the promises
          and the representations, warranties, covenants, and
          agreements set forth herein, intending to be legally
          bound hereby, the parties hereto agree as follows:

                                  ARTICLE 1

                                 THE MERGERS

                  SECTION 1.1.  U.S. Healthcare Sub Merger.  (a) 
          Upon the terms and subject to the conditions set forth
          herein, on the Merger Date, U.S. Healthcare Sub shall
          merge into U.S. Healthcare (the "U.S. HEALTHCARE SUB
          MERGER") and the separate existence of U.S. Healthcare
          Sub shall cease.  U.S. Healthcare shall be the surviving
          corporation in the U.S. Healthcare Sub Merger
          (hereinafter sometimes referred to as the "U.S.
          HEALTHCARE SURVIVING CORPORATION") and its separate
          corporate existence, with all its purposes, objects,
          rights, privileges, powers and franchises, shall continue
          unaffected and unimpaired by the U.S. Healthcare Sub
          Merger.


                  (b)  Pursuant to the U.S. Healthcare Sub Merger:

                  (i)  Each share of Common Stock, par value $0.005
             per share, of U.S. Healthcare (the "COMMON STOCK"),
             and each share of Class B Stock, par value $0.005 per
             share, of U.S. Healthcare (the "CLASS B STOCK", and
             together with the Common Stock, the "U.S. HEALTHCARE
             STOCK") held by U.S. Healthcare as treasury stock or
             owned by Aetna or any Subsidiary of Aetna immediately
             prior to the Merger Date shall be canceled and no
             payment shall be made with respect thereto; provided
             that any shares of U.S. Healthcare Stock (i) held by
             Aetna or any Subsidiary of Aetna for the account of
             another Person, (ii) as to which Aetna or any
             Subsidiary or Affiliate of Aetna is or may be required
             to act as a fiduciary or in a similar capacity or
             (iii) the cancellation of which would violate any
             legal duties or obligations of Aetna or any Subsidiary
             or Affiliate of Aetna shall not be canceled but,
             instead, shall be treated as set forth in Section
             1.1(b)(ii) or 1.6.  For purposes of this Agreement,
             the term "SUBSIDIARY", when used with respect to any
             Person, means any corporation or other organization,
             whether incorporated or unincorporated, (A) of which
             (i) at least a majority of the securities or other
             interests having by their terms ordinary voting power
             to elect a majority of the board of directors or
             others performing similar functions with respect to
             such corporation or other organization is directly or
             indirectly owned or controlled by such Person or (ii)
             such Person or any other Subsidiary of such Person is
             a general partner or (B) which is controlled, directly
             or indirectly, by such Person (through ownership of
             securities, by contract or otherwise) but shall not
             include investment companies managed by subsidiaries
             of Aetna.  For purposes of this Agreement, the term
             "AFFILIATE", when used with respect to any Person,
             means any other Person directly or indirectly
             controlling, controlled by, or under common control
             with such Person; and

                  (ii)  Each share of U.S. Healthcare Stock
             outstanding immediately prior to the Merger Date
             shall, except as otherwise provided in Section
             1.1(b)(i) or as provided in Section 1.6 with respect
             to shares of U.S. Healthcare Stock as to which
             dissenters rights have been exercised (which shares
             shall be treated in accordance with Section 1930 of
             the Pennsylvania Business Corporation Law of 1988, as
             amended (the "PENNSYLVANIA LAW")), be converted into
             the following (the consideration referred to in the
             following clauses (A), (B) and (C) is referred to
             collectively as the "U.S. HEALTHCARE MERGER
             CONSIDERATION"):

                       (A)  the right to receive 0.2246 shares of
                  Common Capital Stock, par value $1.00 per share,
                  of Parent ("PARENT COMMON STOCK");

                       (B)  the right to receive 0.0749 shares of
                  6.25% Class C Non-Voting Preferred Stock, par
                  value $.01 per share, of Parent (the terms of
                  which are set forth in Exhibit A hereto) (the
                  "PARENT PREFERRED STOCK"); and

                       (C) subject to any adjustment as
                  contemplated by Section 8.3(b) hereof, the right
                  to receive in cash without interest an amount
                  equal to $34.20 (the "CASH CONSIDERATION"). 

                  (iii)  At the Merger Date, each share of common
             stock, without par value, of U.S. Healthcare Sub
             ("U.S. HEALTHCARE SUB COMMON STOCK") outstanding
             immediately prior to the Merger Date shall be
             converted into an equal number of shares of Common
             Stock, par value $1.00 per share, of the U.S.
             Healthcare Surviving Corporation ("U.S. HEALTHCARE
             SURVIVING CORPORATION COMMON STOCK").

          From and after the Merger Date, all shares of U.S.
          Healthcare Stock converted in accordance with Section
          1.1(b)(ii) shall no longer be outstanding and shall
          automatically be canceled and retired and shall cease to
          exist, and each holder of such shares shall cease to have
          any rights with respect thereto, except the right to
          receive the U.S. Healthcare Merger Consideration, the
          right to exercise dissenters rights in accordance with
          and subject to the provisions of the Pennsylvania Law and
          the other rights specified in this Agreement.  From and
          after the Merger Date, all certificates representing U.S.
          Healthcare Sub Common Stock shall be deemed for all
          purposes to represent the number of shares of U.S.
          Healthcare Surviving Corporation Common Stock into which
          they were converted in accordance with Section
          1.1(b)(iii).

                  SECTION 1.2.  Aetna Sub Merger.    (a)  Upon the
          terms and subject to the conditions set forth herein, on
          the Merger Date, Aetna Sub shall merge into Aetna (the
          "AETNA SUB MERGER") and the separate existence of Aetna
          Sub shall cease.  Aetna shall be the surviving
          corporation in the Aetna Sub Merger (hereinafter
          sometimes referred to as the "AETNA SURVIVING
          CORPORATION") and its separate corporate existence, with
          all its purposes, objects, rights, privileges, powers and
          franchises, shall continue unaffected and unimpaired by
          the Aetna Sub Merger.

                  (b)  Pursuant to the Aetna Sub Merger:

                  (i)  Each share of common capital stock without
             par value of Aetna (the "AETNA STOCK") held by Aetna
             as treasury stock or owned by U.S. Healthcare or any
             Subsidiary of U.S. Healthcare immediately prior to the
             Merger Date shall be canceled and no payment shall be
             made with respect thereto; 

                  (ii)  Each share of Aetna Stock outstanding
             immediately prior to the Merger Date shall, except as
             otherwise provided in Section 1.2(b)(i) or as provided
             in Section 1.6 with respect to shares of Aetna Stock
             as to which rights of objecting shareholders have been
             exercised (which shares shall be treated in accordance
             with Sections 33-373 and 33-374 of the Connecticut
             Stock Corporation Act (the "CONNECTICUT LAW")), be
             converted into the right to receive one share of
             Parent Common Stock (the "AETNA MERGER CONSIDERATION"
             and, together with the U.S. Healthcare Merger
             Consideration, the "MERGER CONSIDERATION").

                  (iii) At the Merger Date, each share of common
             stock, par value $1.00 per share, of Aetna Sub ("AETNA
             SUB COMMON STOCK"), outstanding immediately prior to
             the Merger Date shall be converted into an equal
             number of shares of Common Stock, par value $.01 per
             share, of the Aetna Surviving Corporation ("AETNA
             SURVIVING CORPORATION COMMON STOCK").

          From and after the Merger Date, all shares of Aetna Stock
          converted in accordance with Section 1.2(b)(ii) shall no
          longer be outstanding and shall automatically be canceled
          and retired and shall cease to exist, and each holder of
          such shares shall cease to have any rights with respect
          thereto, except the right to receive the Aetna Merger
          Consideration, the right to exercise dissenters rights in
          accordance with and subject to the provisions of the
          Connecticut Law and the other rights specified in this
          Agreement.  From and after the Merger Date, all
          certificates representing Aetna Sub Common Stock shall be
          deemed for all purposes to represent the number of shares
          of the Aetna Surviving Corporation Common Stock into
          which they were converted in accordance with Section
          1.2(b)(iii).

                  (c)  Upon consummation of the Aetna Sub Merger,
          the Rights Agreement (the "RIGHTS AGREEMENT") dated as of
          October 27, 1989 between Aetna and First Chicago Trust
          Company of New York shall automatically terminate and be
          of no further force or effect; and Aetna shall effect any
          amendments to the Rights Agreement necessary to effect
          the foregoing.

                  SECTION 1.3.  Surrender and Payment.  (a)  Prior
          to the Merger Date, Aetna and U.S. Healthcare shall cause
          Parent to appoint an agent (the "EXCHANGE AGENT") for the
          purpose of exchanging certificates representing shares of
          U.S. Healthcare Stock for the U.S. Healthcare Merger
          Consideration.  Parent will make available to the
          Exchange Agent, as needed, certificates representing the
          Parent Common Stock and the Parent Preferred Stock in
          respect of the U.S. Healthcare Merger Consideration and
          the Cash Consideration to be paid in respect of shares of
          U.S. Healthcare Stock, in accordance with the terms of
          Section 1.1(b).  Promptly after the Merger Date, Parent
          shall send, or shall cause the Exchange Agent to send, to
          each holder of shares of U.S. Healthcare Stock at the
          Merger Date a letter of transmittal for use in such
          exchange (which shall specify that delivery of the U.S.
          Healthcare Merger Consideration shall be effected, and
          risk of loss and title shall pass, only upon proper
          delivery of the certificates representing shares of U.S.
          Healthcare Stock, to the Exchange Agent).  Upon the
          conversion of Aetna Stock into Parent Common Stock in
          accordance with Section 1.2(b), all shares of Aetna Stock
          so converted shall be cancelled and cease to exist, and
          each certificate theretofore representing any such shares
          shall, without any action on the part of the holder
          thereof, be deemed to represent an equivalent number of
          shares of Parent Common Stock.

                  (b)  Each holder of shares of U.S. Healthcare
          Stock that have been converted into a right to receive
          the U.S. Healthcare Merger Consideration upon surrender
          to the Exchange Agent of a certificate or certificates
          representing such shares of U.S. Healthcare Stock
          together with a properly completed letter of transmittal
          covering such shares of U.S. Healthcare Stock will be
          entitled to receive the U.S. Healthcare Merger
          Consideration payable in respect of such shares of U.S.
          Healthcare Stock and the other amounts, if any, specified
          in this Agreement.  Until so surrendered, each such
          certificate shall, after the Merger Date, represent for
          all purposes only the right to receive the U.S.
          Healthcare Merger Consideration and the other amounts, if
          any, specified in this Agreement.

                  (c)  If any portion of the U.S. Healthcare Merger
          Consideration is to be paid to a Person other than the
          registered holder of the shares of U.S. Healthcare Stock
          represented by the certificate or certificates
          surrendered in exchange therefor, it shall be a condition
          to such payment that the certificate or certificates so
          surrendered shall be properly endorsed or otherwise be in
          proper form for transfer and that the Person requesting
          such payment shall pay to the Exchange Agent any transfer
          or other taxes required as a result of such payment to a
          Person other than the registered holder of such shares of
          U.S. Healthcare Stock or establish to the satisfaction of
          the Exchange Agent that such tax has been paid or is not
          payable.  For purposes of this Agreement, "PERSON" means
          an individual, a corporation, a limited liability
          company, a partnership, an association, a trust or any
          other entity or organization, including, without
          limitation, a government or political subdivision or any
          agency or instrumentality thereof.

                  (d)  After the Merger Date, there shall be no
          further registration of transfers of shares of U.S.
          Healthcare Stock.  If, after the Merger Date,
          certificates representing shares of U.S. Healthcare Stock
          or Aetna Stock are presented to the respective surviving
          corporations in the Mergers, they shall be canceled and
          exchanged for the consideration provided for, and in
          accordance with the procedures set forth, in this Article
          1.

                  (e)  Any portion of the U.S. Healthcare Merger
          Consideration made available to the Exchange Agent
          pursuant to Section 1.3(a) that remains unclaimed by the
          holders of shares of U.S. Healthcare Stock six months
          after the Merger Date shall be returned to Parent, upon
          demand, and any such holder who has not exchanged his
          shares of U.S. Healthcare Stock for the U.S. Healthcare
          Merger Consideration in accordance with this Section 1.3
          prior to that time shall thereafter look only to Parent
          for his claim for Parent Common Stock, Parent Preferred
          Stock, any cash in lieu of fractional shares of Parent
          Common Stock or Parent Preferred Stock, as applicable,
          and any dividends or distributions with respect to Parent
          Common Stock or Parent Preferred Stock, as applicable,
          and the Cash Consideration. Notwithstanding the
          foregoing, Parent shall not be liable to any holder of
          shares of U.S. Healthcare Stock for any amount paid to a
          public official pursuant to applicable abandoned property
          laws.  Any amounts remaining unclaimed by holders of
          shares of U.S. Healthcare Stock immediately prior to such
          time as such amounts would otherwise escheat to or become
          property of any governmental entity shall, to the extent
          permitted by applicable law, become the property of
          Parent free and clear of any claim or interest of any
          Person previously entitled thereto.

                 (f)  Any portion of the U.S. Healthcare Merger
          Consideration made available to the Exchange Agent
          pursuant to Section 1.3(a) to pay for shares of U.S.
          Healthcare Stock in respect of which dissenters rights
          have been perfected shall be returned to Parent, upon
          demand.

                  (g)  No dividends or other distributions with
          respect to the Parent Common Stock or Parent Preferred
          Stock, as applicable, constituting all or a portion of
          the U.S. Healthcare Merger Consideration shall be paid to
          the holder of any unsurrendered certificate representing
          U.S. Healthcare Stock until such certificates are
          surrendered as provided in this Section 1.3.  Subject to
          the effect of applicable laws, following such surrender,
          there shall be paid, without interest, to the record
          holder of the certificates representing the Parent Common
          Stock or Parent Preferred Stock, as applicable, (i) at
          the time of such surrender, the amount of dividends or
          other distributions with a record date after the Merger
          Date payable prior to or on the date of such surrender
          with respect to such whole shares of Parent Common Stock
          or Parent Preferred Stock, as applicable, and not paid,
          less the amount of any withholding taxes which may be
          required thereon, and (ii) at the appropriate payment
          date, the amount of dividends or other distributions with
          a record date after the Merger Date but prior to the date
          of surrender and a payment date subsequent to the date of
          surrender payable with respect to such whole shares of
          Parent Common Stock or Parent Preferred Stock, as
          applicable, less the amount of any withholding taxes
          which may be required thereon.

                  SECTION 1.4.  Cancellation of Parent Stock.  All
          outstanding shares of the capital stock of Parent
          immediately prior to the Merger Date shall be canceled
          immediately upon consummation of the Aetna Sub Merger. 
          The U.S. Healthcare Sub Merger and the Aetna Sub Merger
          are sometimes together referred to as the "MERGERS".

                  SECTION 1.5.  The Merger Date.  As soon as
          practicable (but in no event more than two business days)
          after the satisfaction or, to the extent permitted
          hereunder or under applicable law, waiver of all
          conditions to each of the Mergers, (a) U.S. Healthcare
          and U.S. Healthcare Sub shall file the articles of merger
          required to effect the U.S. Healthcare Sub Merger (the
          "U.S. HEALTHCARE ARTICLES OF MERGER") with the Department
          of State of the Commonwealth of Pennsylvania and make all
          other filings or recordings required by the Pennsylvania
          Law in connection with the U.S. Healthcare Sub Merger,
          and (b) Aetna and Aetna Sub shall file a certificate of
          merger (the "AETNA CERTIFICATE OF MERGER") with the
          Secretary of the State of the State of Connecticut and
          make all other filings or recordings required by the
          Connecticut Law in connection with the Aetna Sub Merger,
          and (c) the Mergers shall become effective, it being
          understood that the U.S. Healthcare Sub Merger shall
          become effective immediately prior to the Aetna Sub
          Merger in accordance with the terms of such U.S.
          Healthcare Articles of Merger and Aetna Certificate of
          Merger (such time and date are referred to as the "MERGER
          DATE").

                  SECTION 1.6.  Dissenting Shares.  Notwithstanding
          Section 1.1 or Section 1.2, as applicable, shares of U.S.
          Healthcare Stock or Aetna Stock outstanding immediately
          prior to the Merger Date and held by a holder who has not
          voted in favor of the U.S. Healthcare Sub Merger or the
          Aetna Sub Merger, as applicable, and who has exercised
          dissenters rights in respect of such shares of U.S.
          Healthcare Stock in accordance with the Pennsylvania Law,
          or rights of objecting shareholders in respect of such
          shares of Aetna Stock in accordance with the Connecticut
          Law, shall not be converted into a right to receive the
          U.S. Healthcare Merger Consideration or the Aetna Merger
          Consideration, as applicable, unless such holder fails to
          perfect or withdraws or otherwise loses his dissenters'
          or objecting shareholders' rights.  Shares of U.S.
          Healthcare Stock in respect of which dissenters rights
          have been exercised shall be treated in accordance with
          Section 1930 of the Pennsylvania Law.  Shares of Aetna
          Stock in respect of which objecting shareholders' rights
          have been exercised shall be treated in accordance with
          Sections 33-373 and 33-374 of the Connecticut Law.  If
          after the Merger Date such holder fails to perfect or
          withdraws or otherwise loses his right to demand the
          payment of fair value for shares of U.S. Healthcare Stock
          under Pennsylvania Law, or shares of Aetna Stock under
          Connecticut Law, as applicable, such shares of U.S.
          Healthcare Stock or Aetna Stock shall be treated as if
          they had been converted as of the Merger Date into a
          right to receive the U.S. Healthcare Merger Consideration
          or the Aetna Merger Consideration, as applicable.  U.S.
          Healthcare shall give Aetna prompt notice of any demands
          received by U.S. Healthcare for the exercise of
          dissenters rights with respect to shares of U.S.
          Healthcare Stock and Aetna shall have the right to
          participate in all negotiations and proceedings with
          respect to such demands.  U.S. Healthcare shall not,
          except with the prior written consent of Aetna, make any
          payment with respect to, or settle or offer to settle,
          any such demands.

                  SECTION 1.7.  Stock Options of U.S. Healthcare;
          Restricted Stock.  (a)  As of the date of this Agreement,
          each outstanding option granted to (i) a U.S. Healthcare
          employee to acquire U.S. Healthcare Stock (a "U.S.
          HEALTHCARE EMPLOYEE STOCK OPTION") and (ii) each
          outstanding option granted to a non-employee to acquire
          U.S. Healthcare Stock (a "U.S. HEALTHCARE NON-EMPLOYEE
          STOCK OPTION" and together with the U.S. Healthcare
          Employee Stock Options, the "U.S. HEALTHCARE STOCK
          OPTIONS"), in each case, under any incentive plan of U.S.
          Healthcare, shall become fully vested and exercisable. 
          At the Merger Date, each U.S. Healthcare Stock Option
          then outstanding shall be canceled and treated as
          follows:

                  (i)  with respect to all U.S. Healthcare Non-
             Employee Stock Options and the number of shares
             subject to U.S. Healthcare Employee Stock Options held
             by each holder which, if all such holder's canceled
             U.S. Healthcare Employee Stock Options were exercised
             immediately prior to the Merger Date, would give rise
             to 40% of the income which would be recognized by such
             holder upon such exercise (assuming, for these
             purposes, that all such options were nonqualified
             options) (the "INITIAL NUMBER OF U.S. HEALTHCARE
             OPTION SHARES"), Parent shall issue in substitution
             therefor options to purchase Parent Common Stock on
             the terms and conditions described herein (each such
             substitute option, a "U.S. HEALTHCARE SUBSTITUTE
             OPTION").  U.S. Healthcare Substitute Options shall be
             issued under a Parent stock option plan to be adopted
             prior to the Merger Date and which shall comply in all
             respects with the applicable requirements of Rule 16b-
             3 promulgated under the Securities Exchange Act of
             1934, as amended, and the rules and regulations
             promulgated thereunder (the "1934 ACT").  The number
             of shares of Parent Common Stock subject to each such
             U.S. Healthcare Substitute Option and the exercise
             price thereunder shall be computed in compliance with
             the requirements of Section 424(a) of the Code, and
             each such U.S. Healthcare Substitute Option shall
             otherwise be subject to the other applicable terms and
             conditions of the U.S. Healthcare Stock Option for
             which it is substituted.  Without limiting the
             generality of the foregoing, (A) the exercise price of
             each U.S. Healthcare Substitute Option shall equal the
             exercise price of the U.S. Healthcare Stock Option for
             which such U.S. Healthcare Substitute Option was
             substituted, multiplied by a fraction, the numerator
             of which is the average closing price of Parent Common
             Stock for the five trading days following the Merger
             Date ("X") and the denominator of which is the closing
             price of U.S. Healthcare Stock on the last trading day
             preceding the Merger Date ("Y") and (B) the number of
             shares subject to such U.S. Healthcare Substitute
             Option shall equal the Initial Number of U.S.
             Healthcare Option Shares, multiplied by a fraction,
             the numerator of which is Y and the denominator of
             which is X.  The U.S. Healthcare Stock Options for
             which U.S. Healthcare Substitute Options shall be
             issued with respect to each holder shall be selected
             in the following order:

                  (1)  first, incentive stock options, and 

                  (2)  second, nonqualified options, 

             in each case giving priority to those with the highest
             exercise price.

                  (ii) with respect to each remaining canceled U.S.
             Healthcare Employee Stock Option, the holder shall
             receive in cash, within two business days following
             the Merger Date, an amount equal to the excess of (A)
             the closing price of U.S. Healthcare Stock on the last
             trading day preceding the Merger Date, over (B) the
             exercise price of such U.S. Healthcare Stock Option,
             multiplied by the number of shares of U.S. Healthcare
             Stock subject to such remaining U.S. Healthcare
             Employee Stock Option.

                  (b)   As of the date of this Agreement, each
          outstanding share of restricted stock of U.S. Healthcare
          issued to U.S. Healthcare employees (the "U.S. HEALTHCARE
          RESTRICTED STOCK") shall become fully vested and entitled
          to receive the U.S. Healthcare Merger Consideration. 
          Each outstanding share of restricted stock of U.S.
          Healthcare issued to any Person who is not an employee of
          U.S. Healthcare shall become fully vested and entitled to
          receive the U.S. Healthcare Merger Consideration on the
          Merger Date.

                  (c)  Prior to the Merger Date, U.S. Healthcare
          (i) shall use its best efforts to obtain any consents
          from holders of any U.S. Healthcare Stock Options or U.S.
          Healthcare Restricted Stock and (ii) shall make any
          amendments to the terms of any of their respective
          incentive plans or arrangements, in each case that are
          necessary to give effect to the transactions contemplated
          by this Section 1.7.

                  (d)  As soon as practicable after the Merger
          Date, Parent shall file with the Securities and Exchange
          Commission ("SEC") a registration statement on Form S-8
          with respect to the shares of Parent Common Stock
          underlying the U.S. Healthcare Substitute Options and use
          its reasonable best efforts to have such registration
          statement declared effective under the Securities Act of
          1933, as amended, and the rules and regulations
          thereunder (the "1933 ACT")

                  SECTION 1.8.  Stock Options of Aetna.   (a)  At
          the Merger Date, each outstanding option to purchase
          shares of Aetna Stock (an "AETNA STOCK OPTION") under any
          of Aetna's incentive plans, whether vested or unvested,
          shall be canceled and Parent shall issue in substitution
          therefor an option to purchase Parent Common Stock on the
          terms and conditions described herein (each such
          replacement option an "AETNA SUBSTITUTE OPTION").  Aetna
          Substitute Options shall be issued under a Parent stock
          option plan to be adopted prior to the Merger Date and
          which shall comply in all respects with the applicable
          requirements of Rule 16b-3 promulgated under the 1934
          Act.  The number of shares of Parent Common Stock subject
          to each such Aetna Substitute Option and the exercise
          price thereunder shall be computed in compliance with the
          requirements of Section 424(a) of the Code and each such
          Aetna Substitute Option shall be subject to substantially
          all of the other terms and conditions (including vesting
          schedule) of the Aetna Stock Option it replaces.  Without
          limiting the generality of the foregoing, (A) the
          exercise price of each Aetna Substitute Option shall
          equal the exercise price of the Aetna Stock Option for
          which such Aetna Substitute Option was substituted,
          multiplied by a fraction, the numerator of which is the
          average closing price of Parent Common Stock for the five
          trading days following the Merger Date ("X") and the
          denominator of which is the closing price of Aetna Stock
          on the last trading day preceding the Merger Date ("Y")
          and (B) the number of shares subject to such Aetna
          Substitute Option shall equal the number of Aetna Option
          shares, multiplied by a fraction, the numerator of which
          is Y and the denominator of which is X.

                  (b)  Prior to the Merger Date, Aetna shall (i)
          use its best efforts to obtain any consents from holders
          of any Aetna Stock Options and (ii) make any amendments
          to the terms of any of its incentive plans or
          arrangements, in each case, that are necessary to give
          effect to the transactions contemplated by this Section
          1.8.

                  (c)  As soon as practicable after the Merger
          Date, Parent shall file with the SEC a registration
          statement on Form S-8 with respect to the shares of
          Parent Common Stock underlying the Aetna Substitute
          Options and use its reasonable best efforts to have such
          registration statement declared effective under the 1933
          Act.

                  SECTION 1.9.  Adjustments.  If at any time during
          the period between the date of this Agreement and the
          Merger Date, any change in the outstanding shares of
          Aetna Stock or U.S. Healthcare Stock shall occur,
          including by reason of any reclassification,
          recapitalization, stock split or combination, exchange or
          readjustment of shares, or any stock dividend thereon
          with a record date during such period, the Merger
          Consideration shall be appropriately adjusted.

                  SECTION 1.10. Fractional Shares.  No fractional
          shares of Parent Common Stock or Parent Preferred Stock
          shall be issued in the U.S. Healthcare Sub Merger, but in
          lieu thereof each holder of U.S. Healthcare Stock
          otherwise entitled to a fractional share of Parent Common
          Stock or Parent Preferred Stock, as applicable, will be
          entitled to receive, from the Exchange Agent in
          accordance with the provisions of this Section 1.10, a
          cash payment in lieu of such fractional shares of Parent
          Common Stock or Parent Preferred Stock, as applicable,
          representing such holder's proportionate interest, if
          any, in the net proceeds from the sale by the Exchange
          Agent in one or more transactions (which sale
          transactions shall be made at such times, in such manner
          and on such terms as the Exchange Agent shall determine
          in its reasonable discretion) on behalf of all such
          holders of the aggregate of the fractional shares of
          Parent Common Stock or Parent Preferred Stock, as
          applicable, which would otherwise have been issued (the
          "EXCESS SHARES").  The sale of the Excess Shares by the
          Exchange Agent shall be executed on the New York Stock
          Exchange, Inc. (the "NYSE") through one or more member
          firms of the NYSE and shall be executed in round lots to
          the extent practicable.  Until the net proceeds of such
          sale or sales have been distributed to the holders of
          shares of U.S. Healthcare Stock, the Exchange Agent will
          hold such proceeds in trust for the holders of U.S.
          Healthcare Stock.  Parent shall pay all commissions,
          transfer taxes and other out-of-pocket transaction costs,
          including, without limitation, the expenses and
          compensation of the Exchange Agent, incurred in
          connection with such sale of the Excess Shares.  As soon
          as practicable after the determination of the amount of
          cash, if any, to be paid to holders of U.S. Healthcare
          Stock in lieu of any fractional shares of Parent Common
          Stock or Parent Preferred Stock, as applicable, the
          Exchange Agent shall make available such amounts to such
          holders of shares of U.S. Healthcare Stock without
          interest.

                                  ARTICLE 2

                          THE SURVIVING CORPORATIONS

                  SECTION 2.1.  Articles and Certificate of
          Incorporation; Bylaws.  (a) The articles of incorporation
          and bylaws of U.S. Healthcare in effect at the Merger
          Date shall be the articles of incorporation and bylaws,
          respectively, of the U.S. Healthcare Surviving
          Corporation until amended in accordance with applicable
          law.  The U.S. Healthcare Surviving Corporation shall
          have the same name as U.S. Healthcare.  The U.S.
          Healthcare Surviving Corporation shall succeed to all of
          the rights, privileges, powers and franchises, of a
          public as well as of a private nature, of U.S. Healthcare
          and U.S. Healthcare Sub, all of the properties and assets
          and all of the debts of U.S. Healthcare and U.S.
          Healthcare Sub, choses in action and other interests due
          or belonging to U.S. Healthcare and U.S. Healthcare Sub
          and shall be subject to, and responsible for, all of the
          debts, liabilities and duties of U.S. Healthcare and U.S.
          Healthcare Sub with the effect set forth in the
          Pennsylvania Law.

                  (b)  The certificate of incorporation and bylaws
          of Aetna in effect at the Merger Date shall be the
          certificate of incorporation and bylaws, respectively, of
          the Aetna Surviving Corporation until amended in
          accordance with applicable law.  The Aetna Surviving
          Corporation shall have the same name as Aetna.  The Aetna
          Surviving Corporation shall succeed to all of the rights,
          privileges, powers and franchises, of a public as well as
          of a private nature, of Aetna and Aetna Sub, all of the
          properties and assets of and all of the debts of Aetna
          and Aetna Sub, choses in action and other interests due
          or belonging to Aetna and Aetna Sub and shall be subject
          to, and responsible for, all of the debts, liabilities
          and duties of Aetna and Aetna Sub with the effect set
          forth in the Connecticut Law.

                  SECTION 2.2.  Directors and Officers.  From and
          after the Merger Date, until successors are duly elected
          or appointed and qualified in accordance with applicable
          law, (a) the directors of the U.S. Healthcare Surviving
          Corporation immediately after the Merger Date shall be
          designated by Parent and shall include, without
          limitation, the two Co-Presidents, (b) the directors of
          Parent immediately after the Merger Date shall be the
          directors of the Aetna Surviving Corporation, (c) the
          officers of U.S. Healthcare immediately prior to the
          Merger Date (other than the Principal Shareholder) shall
          be the officers of the U.S. Healthcare Surviving
          Corporation and (d) the officers of Aetna immediately
          prior to the Merger Date shall be the officers of the
          Aetna Surviving Corporation.

                                  ARTICLE 3

                        REPRESENTATIONS AND WARRANTIES
                              OF U.S. HEALTHCARE

                  U.S. Healthcare represents and warrants to Aetna
          that:

                  SECTION 3.1.  Corporate Existence and Power. 
          U.S. Healthcare is a corporation duly incorporated,
          validly existing and in good standing under the laws of
          the Commonwealth of Pennsylvania, and has all corporate
          powers and all governmental licenses, authorizations,
          consents and approvals required to carry on its business
          as now conducted.  U.S. Healthcare is duly qualified to
          do business as a foreign corporation and is in good
          standing in each jurisdiction where the character of the
          property owned or leased by it or the nature of its
          activities makes such qualification necessary, except for
          those jurisdictions where the failure to be so qualified
          would not, individually or in the aggregate, have a
          Material Adverse Effect on U.S. Healthcare.  For purposes
          of this Agreement, a "MATERIAL ADVERSE EFFECT" means,
          with respect to any Person, a material adverse effect on
          the condition (financial or otherwise), business, assets,
          or results of operations of such Person and its
          Subsidiaries taken as a whole or on the ability of such
          Person to perform its obligations hereunder.  U.S.
          Healthcare has heretofore delivered to Aetna true and
          complete copies of U.S. Healthcare's articles of
          incorporation and bylaws as currently in effect.

                  SECTION 3.2.  Corporate Authorization.  The
          execution, delivery and, subject to receipt of the
          approvals referred to in Section 3.3, the performance by
          U.S. Healthcare of this Agreement and the consummation by
          U.S. Healthcare of the transactions contemplated by this
          Agreement are within U.S. Healthcare's corporate powers
          and, except as set forth in the third sentence of this
          Section 3.2, have been duly authorized by all necessary
          corporate action.  Without limiting the generality of the
          foregoing, the Board of Directors of U.S. Healthcare has
          unanimously adopted a resolution adopting and approving
          this Agreement.  The affirmative vote of a majority of
          the total voting power represented by the outstanding
          shares of U.S. Healthcare Stock entitled to vote thereon,
          voting as a single class, is the only vote of any class
          or series of U.S. Healthcare's capital stock necessary to
          approve and adopt this Agreement and the transactions
          contemplated by this Agreement.  This Agreement has been
          duly executed and delivered by U.S. Healthcare and
          constitutes a valid and binding agreement of U.S.
          Healthcare, enforceable against U.S. Healthcare in
          accordance with its terms, subject to (a) bankruptcy,
          insolvency, moratorium and other similar laws now or
          hereafter in effect relating to or affecting creditors'
          rights generally and (b) general principles of equity
          (regardless of whether considered in a proceeding at law
          or in equity).

                  SECTION 3.3.  Governmental Authorization.  The
          execution, delivery and performance by U.S. Healthcare of
          this Agreement, and the consummation by U.S. Healthcare
          of the transactions contemplated by this Agreement
          require no action, by or in respect of, or filing with,
          any governmental body, agency, official or authority
          other than (a) the filing of the U.S. Healthcare Articles
          of Merger in accordance with the Pennsylvania Law; (b)
          compliance with any applicable requirements of the
          Hart-Scott-Rodino Antitrust Improvements Act of 1976, as
          amended (the "HSR ACT"); (c) compliance with any
          applicable requirements of the 1934 Act; (d) compliance
          with any applicable requirements of the 1933 Act; (e)
          compliance with any applicable foreign or state
          securities or Blue Sky laws; (f) approvals or filings
          required under laws, rules and regulations governing
          insurance and insurance companies, health maintenance
          organizations, health care service plans, third party
          administrators or other managed health care
          organizations; and (g) filings and notices not required
          to be made or given until after the Merger Date.

                  SECTION 3.4.  Non-Contravention.  Except as
          disclosed on Schedule 3.4, the execution, delivery and
          performance by U.S. Healthcare of this Agreement and the
          consummation by U.S. Healthcare of the transactions
          contemplated by this Agreement do not and will not (a)
          assuming receipt of the approvals referred to in Sections
          3.2, contravene or conflict with the articles of
          incorporation or bylaws of U.S. Healthcare, (b) assuming
          compliance with the matters referred to in Section 3.3,
          contravene or conflict with or constitute a violation of
          any provision of any law, regulation, judgment,
          injunction, order or decree binding upon or applicable to
          U.S. Healthcare or any Subsidiary of U.S. Healthcare, (c)
          constitute a default (or an event which with notice, the
          lapse of time or both would become a default) under or
          give rise to a right of termination, cancellation or
          acceleration of any right or obligation of U.S.
          Healthcare or any Subsidiary of U.S. Healthcare or to a
          loss of any benefit to which U.S. Healthcare or any
          Subsidiary of U.S. Healthcare is entitled under any
          provision of any agreement, contract or other instrument
          binding upon U.S. Healthcare or any Subsidiary of U.S.
          Healthcare or any license, franchise, permit or other
          similar authorization held by U.S. Healthcare or any
          Subsidiary of U.S. Healthcare, or (d) result in the
          creation or imposition of any Lien on any asset of U.S.
          Healthcare or any Subsidiary of U.S. Healthcare, except
          for such contraventions, conflicts or violations referred
          to in clause (b) or defaults, rights of termination,
          cancellation or acceleration, losses or Liens referred to
          in clause (c) or (d) that would not, individually or in
          the aggregate, have a Material Adverse Effect on U.S.
          Healthcare.  For purposes of this Agreement, "LIEN"
          means, with respect to any asset, any mortgage, lien,
          pledge, charge, security interest or encumbrance of any
          kind in respect of such asset.

                  SECTION 3.5.  Capitalization.  As of February 29,
          1996, the authorized capital stock of U.S. Healthcare
          consists of 275,000,000 shares of Common Stock,
          50,000,000 shares of Class B Stock and 50,000,000 shares
          of preferred stock.  As of February 29, 1996, there were
          (i) 139,481,136 shares of Common Stock outstanding,
          including 748,481 shares of employee and non-employee
          unvested restricted common stock, (ii) 14,429,867 shares
          of Class B Stock outstanding and (iii) no shares of
          preferred stock outstanding.  As of February 29, 1996,
          there were employee and non-employee stock options to
          purchase an aggregate of 4,004,857 shares of Common Stock
          outstanding (of which options to purchase an aggregate of
          802,346 shares of Common Stock were exercisable).  All
          outstanding shares of capital stock of U.S. Healthcare
          have been duly authorized and validly issued and are
          fully paid and nonassessable.  Except as set forth in
          this Section 3.5 and except for changes since February
          29, 1996 resulting from the exercise of stock options
          outstanding on such date, there are outstanding (a) no
          shares of capital stock or other voting securities of
          U.S. Healthcare, (b) no securities of U.S. Healthcare
          convertible into or exchangeable for shares of capital
          stock or voting securities of U.S. Healthcare, and (c) no
          options or other rights to acquire from U.S. Healthcare,
          and no obligation of U.S. Healthcare to issue, any
          capital stock, voting securities or securities
          convertible into or exchangeable for capital stock or
          voting securities of U.S. Healthcare (the items in
          clauses (a), (b) and (c) being referred to collectively
          as the "U.S. HEALTHCARE SECURITIES").  There are no
          outstanding obligations of U.S. Healthcare or any
          Subsidiary of U.S. Healthcare to repurchase, redeem or
          otherwise acquire any U.S. Healthcare Securities other
          than put rights with respect to not more than 100,000
          shares of Common Stock held by providers of medical
          services.

                  SECTION 3.6.  Subsidiaries.  (a)  Each Subsidiary
          of U.S. Healthcare is duly incorporated, validly existing
          (as an insurance corporation, corporation organized as a
          health maintenance organization or otherwise) and in good
          standing under the laws of its jurisdiction of
          incorporation, has all corporate powers and all
          governmental licenses, authorizations, consents and
          approvals required to carry on its business as now
          conducted and is duly qualified to do business as a
          foreign corporation or is duly licensed to do business as
          an insurer, a health maintenance organization or
          otherwise and is in good standing in each jurisdiction
          where the character of the property owned or leased by it
          or the nature of its activities makes such qualification
          necessary, except for those jurisdictions where failure
          to be so qualified or licensed would not, individually or
          in the aggregate, have a Material Adverse Effect on U.S.
          Healthcare.  All Subsidiaries and their respective
          jurisdictions of incorporation are identified in U.S.
          Healthcare's annual report on Form 10-K for the fiscal
          year ended December 31, 1995 (the "U.S. HEALTHCARE
          10-K").

                  (b)  Except as disclosed on Schedule 3.6, all of
          the outstanding capital stock of, or other ownership
          interests in, each Subsidiary of U.S. Healthcare, is
          owned by U.S. Healthcare, directly or indirectly, free
          and clear of any Lien and free of any other limitation or
          restriction (including, without limitation, any
          restriction on the right to vote, sell or otherwise
          dispose of such capital stock or other ownership
          interests).  Except as disclosed on Schedule 3.6, there
          are no outstanding (i) securities of U.S. Healthcare or
          any Subsidiary of U.S. Healthcare convertible into or
          exchangeable for shares of capital stock or other voting
          securities or ownership interests in any Subsidiary of
          U.S. Healthcare, and (ii) options or other rights to
          acquire from U.S. Healthcare or any Subsidiary of U.S.
          Healthcare, and no other obligation of U.S. Healthcare or
          any Subsidiary of U.S. Healthcare to issue, any capital
          stock, voting securities or other ownership interests in,
          or any securities convertible into or exchangeable for,
          any capital stock, voting securities or ownership
          interests in, any Subsidiary of U.S. Healthcare (the
          items in clauses (i) and (ii) being referred to
          collectively as the "U.S. HEALTHCARE SUBSIDIARY
          SECURITIES").  Except as disclosed on Schedule 3.6, there
          are no outstanding obligations of U.S. Healthcare or any
          Subsidiary of U.S. Healthcare to repurchase, redeem or
          otherwise acquire any outstanding U.S. Healthcare
          Subsidiary Securities.

                  SECTION 3.7.  SEC Filings.  (a)  U.S. Healthcare
          has delivered to Aetna (i) U.S. Healthcare's annual
          reports on Form 10-K for its fiscal years ended December
          31, 1995, 1994 and 1993, (ii) its proxy or information
          statements relating to meetings of, or actions taken
          without a meeting by, the shareholders of U.S. Healthcare
          held since January 1, 1993, and (iii) all of its other
          reports, statements, schedules and registration
          statements filed with the SEC since January 1, 1993.  

                  (b)  As of its filing date, each such report,
          statement, schedule or registration statement filed
          pursuant to the 1934 Act did not contain any untrue
          statement of a material fact or omit to state any
          material fact necessary in order to make the statements
          made therein, in the light of the circumstances under
          which they were made, not misleading.

                  (c)  Each such registration statement, as amended
          or supplemented, if applicable, filed pursuant to the
          1933 Act as of the date such registration statement or
          amendment became effective did not contain any untrue
          statement of a material fact or omit to state any
          material fact required to be stated therein or necessary
          to make the statements therein not misleading.

                  SECTION 3.8.  Financial Statements.  The audited
          consolidated financial statements of U.S. Healthcare
          included in its annual reports on Form 10-K referred to
          in Section 3.7 fairly present, in conformity with
          generally accepted accounting principles applied on a
          consistent basis (except as may be indicated in the notes
          thereto), the consolidated financial position of U.S.
          Healthcare and its consolidated Subsidiaries as of the
          dates thereof and their consolidated results of
          operations and cash flows for the periods then ended. 
          For purposes of this Agreement, "U.S. HEALTHCARE BALANCE
          SHEET" means the consolidated balance sheet of U.S.
          Healthcare as of December 31, 1995 set forth in the U.S.
          Healthcare 10-K and "U.S. HEALTHCARE BALANCE SHEET DATE"
          means December 31, 1995.

                  SECTION 3.9.  Disclosure Documents.  (a)  Each
          document required to be filed by U.S. Healthcare with the
          SEC in connection with the transactions contemplated by
          this Agreement (the "U.S. HEALTHCARE DISCLOSURE
          DOCUMENTS"), including, without limitation, the proxy or
          information statement of U.S. Healthcare (the "U.S.
          HEALTHCARE PROXY STATEMENT"), if any, to be filed with
          the SEC in connection with the U.S. Healthcare Sub
          Merger, and any amendments or supplements thereto, will,
          when filed, comply as to form in all material respects
          with the applicable requirements of the 1934 Act.

                  (b)  At the time the U.S. Healthcare Proxy
          Statement or any amendment or supplement thereto is first
          mailed to shareholders of U.S. Healthcare and at the time
          such shareholders vote on the adoption and approval of
          this Agreement, the U.S. Healthcare Proxy Statement, as
          supplemented or amended, if applicable, will not contain
          any untrue statement of a material fact or omit to state
          any material fact necessary in order to make the
          statements made therein, in the light of the
          circumstances under which they were made, not misleading. 
          At the time of the filing of any U.S. Healthcare
          Disclosure Document other than the U.S. Healthcare Proxy
          Statement and at the time of any distribution thereof,
          such U.S. Healthcare Disclosure Document will not contain
          any untrue statement of a material fact or omit to state
          a material fact necessary in order to make the statements
          made therein, in the light of the circumstances under
          which they were made, not misleading.  The
          representations and warranties contained in this Section
          3.9(b) will not apply to statements included in or
          omissions from the U.S. Healthcare Disclosure Documents
          based upon information furnished to U.S. Healthcare in
          writing by Aetna or Parent specifically for use therein.

                  SECTION 3.10. Information Supplied.  The
          information supplied or to be supplied by U.S. Healthcare
          for inclusion or incorporation by reference in (i) the
          Aetna Proxy Statement or any amendment or supplement
          thereto will not, at the time the Aetna Proxy Statement
          is first mailed to shareholders of Aetna and at the time
          such shareholders vote on the proposals relating to the
          Aetna Sub Merger set forth therein, contain any untrue
          statement of a material fact or omit to state any
          material fact necessary in order to make the statements
          made therein, in light of the circumstances under which
          they were made is not misleading, (ii) the Form S-4 or
          any amendment or supplement thereto will not, at the time
          the Form S-4 becomes effective under the 1933 Act and at
          the Merger Date, contain any untrue statement of a
          material fact or omit to state a material fact required
          to be stated therein or necessary to make the statements
          therein not misleading and (iii) any Aetna Disclosure
          Document or Parent Disclosure Document (other than the
          Aetna Proxy Statement, the Form S-4 and any amendments or
          supplements to either) will not, at the time of
          effectiveness of such Aetna Disclosure Document or Parent
          Disclosure Document and at the time of any distribution
          thereof, contain any untrue statement of a material fact
          or omit to state a material fact necessary in order to
          make the statements made therein, in light of the
          circumstances under which they were made, not misleading.

                  SECTION 3.11. Absence of Certain Changes.  Except
          as disclosed in the U.S. Healthcare 10-K, as set forth on
          Schedule 3.11, or as specifically permitted by Section
          5.1, since the U.S. Healthcare Balance Sheet Date U.S.
          Healthcare and its Subsidiaries have conducted their
          business in the ordinary course consistent with past
          practice and there has not been:

                  (a)  any event, occurrence or facts which has had
             or is reasonably expected to have a Material Adverse
             Effect on U.S. Healthcare;

                  (b)  any declaration, setting aside or payment of
             any dividend or other distribution with respect to any
             shares of capital stock of U.S. Healthcare (other than
             payment of U.S. Healthcare's regular quarterly
             dividend on U.S. Healthcare Common Stock in an amount
             not exceeding $0.275 per share and on Class B Stock in
             an amount not exceeding $0.248 per share), or any
             repurchase, redemption or other acquisition by U.S.
             Healthcare or any Subsidiary of U.S. Healthcare of any
             amount of outstanding shares of capital stock or other
             securities of, or other ownership interests in, U.S.
             Healthcare, which repurchase, redemption or other
             acquisition, individually or in the aggregate, is
             material to U.S. Healthcare and its Subsidiaries,
             taken as a whole;

                  (c)  any amendment of any term of any outstanding
             security of U.S. Healthcare or any Subsidiary of U.S.
             Healthcare (other than amendments to the U.S.
             Healthcare Stock Options or the restricted stock of
             U.S. Healthcare to accelerate the vesting thereof upon
             execution of this Agreement);

                  (d)  any incurrence, assumption or guarantee by
             U.S. Healthcare or any Subsidiary of U.S. Healthcare
             of any indebtedness from any third party for borrowed
             money other than in the ordinary course of business
             and in amounts and on terms consistent with past
             practices;

                  (e)  any creation or assumption by U.S.
             Healthcare or any Subsidiary of U.S. Healthcare of any
             Lien on any material asset other than in the ordinary
             course of business consistent with past practices;

                  (f)  any making of any loan, advance or capital
             contribution to or investment in any Person other than
             (i) loans, advances or capital contributions to or
             investments in Subsidiaries of U.S. Healthcare, (ii)
             investments in securities consistent with past
             practice or (iii) other loans, advances, capital
             contributions or investments in an aggregate amount
             not exceeding $25,000,000;

                  (g)  any damage, destruction or other casualty
             loss (whether or not covered by insurance) affecting
             the business or assets of U.S. Healthcare or any
             Subsidiary of U.S. Healthcare which, individually or
             in the aggregate, is or may reasonably be expected to
             be material to U.S. Healthcare and its Subsidiaries,
             taken as a whole;

                  (h)  any transaction or commitment made, or any
             contract or agreement entered into, by U.S. Healthcare
             or any Subsidiary of U.S. Healthcare relating to its
             assets or business (including, without limitation, the
             acquisition or disposition of any assets) or any
             relinquishment by U.S. Healthcare or any Subsidiary of
             U.S. Healthcare of any contract, license or other
             right which, in any such case, individually or in the
             aggregate, would have a Material Adverse Effect on
             U.S. Healthcare, other than transactions, commitments,
             contracts or agreements contemplated by this
             Agreement;

                  (i)  any change in any method of accounting or
             accounting principle or practice by U.S. Healthcare or
             any Subsidiary of U.S. Healthcare, except for any such
             change required by reason of a concurrent change in
             generally accepted accounting principles or statutory
             accounting principles;

                  (j)  (A) except for new employment agreements
             with the Persons listed on Schedule 3.11(j) (each, a
             "SPECIFIED U.S. HEALTHCARE OFFICER"), entered into as
             of the date hereof, or in the case of those Specified
             U.S. Healthcare Officers listed on Schedule 8.2(b), in
             the form of Schedule 3.11(j)(A) hereto (i) any grant
             by U.S. Healthcare or any of its Subsidiaries of any
             severance or termination pay to, or entry into any
             employment, termination or severance arrangement with,
             any Specified U.S. Healthcare Officer or, (ii) except
             in the ordinary course of business consistent in
             magnitude and character with past practice and with
             the terms of severance or termination arrangements in
             effect or pending on the U.S. Healthcare Balance Sheet
             Date with respect to individuals with comparable
             positions or responsibilities, any grant of any
             severance or termination pay to, or entry into any
             employment, termination or severance arrangement with,
             any other employees; (B)(i) any amendment in any
                  material respect of any employment, termination or
                  severance arrangement with any Specified U.S.
                  Healthcare Officer or (ii) except in the ordinary
                  course, any amendment in any material respect of any
                  employment termination or severance arrangement with
                  any other directors, officers or employees (it being
                  understood that for the purposes of clauses (i) and
                  (ii), any increase or acceleration of benefits under
                  any such agreement or arrangement shall be deemed
                  material); (C) any (x) establishment, adoption, entry
                  into, or (y) except (I) the matters described in the
                  parenthetical clause of Section 3.11(c) hereof and
                  (II) the acceleration of vesting of U.S. Healthcare
                  Non-Employee Stock Options and restricted stock of
                  U.S. Healthcare issued to Persons who are not
                  employees of U.S. Healthcare, amendment or action to
                  accelerate or enhance any rights or benefits under,
                  (i) any plan providing for options, stock, performance
                  awards or other forms of incentive or deferred
                  compensation or (ii) any collective bargaining, bonus,
                  profit sharing, thrift, compensation, restricted
                  stock, pension, retirement, deferred compensation,
                  employment, termination, severance or other plan,
                  agreement, trust, fund, policy or arrangement for the
                  benefit of any of its directors, officers or
                  employees; (D) any grant, conferment or award of any
                  options, stock, performance awards or other awards to
                  acquire any shares of capital stock of U.S. Healthcare
                  (other than an aggregate of 150,000 options to acquire
                  U.S. Healthcare Stock and/or shares of restricted
                  stock of U.S. Healthcare pursuant to the terms
                  existing on the date hereof of U.S. Healthcare's plans
                  to persons other than the Specified U.S. Healthcare
                  Officers); (E) any increase in the contribution
                  percentages under U.S. Healthcare's defined
                  contribution plans; or (F) (i) other than an annual
                  adjustment with respect to the 1997 calendar year if
                  the Merger Date occurs after December 31, 1996, which
                  adjustment shall be of a magnitude and character
                  consistent with past practice, any increase in the
                  compensation or benefits of Specified U.S. Healthcare
                  Officers or any payment of any benefit not required by
                  any plan or arrangement in effect as of the date
                  hereof or (ii) except in the ordinary course of
                  business consistent in magnitude and character with
                  past practice and in no event greater than 6% in the
                  aggregate on a per annum basis for all other
                  individuals as a group, any increase in the
                  compensation or benefits of any other employees or
                  payment of any benefit not required by any plan or
                  arrangement as in effect on the U.S. Healthcare
                  Balance Sheet Date; 

                       (k)  except such contracts as would not be
                  material to U.S. Healthcare and its Subsidiaries as a
                  whole or material to their operations in any Standard
                  Metropolitan Statistical Area, any entry by U.S.
                  Healthcare or any of its Subsidiaries into any
                  contract limiting the right of U.S. Healthcare or any
                  of its Subsidiaries at any time on or after the date
                  of this Agreement or Aetna or any of its Subsidiaries
                  or Affiliates at or after the Merger Date, to engage
                  in, or to compete with any Person in, any business,
                  including, without limitation, any contract which
                  includes exclusivity provisions restricting the
                  geographical area in which, or the method by which,
                  any such business may be conducted by U.S. Healthcare
                  or any of its Subsidiaries or Affiliates, or by Aetna
                  or any of its Subsidiaries or Affiliates after the
                  Merger Date;

                       (l)  any entry by U.S. Healthcare or any of its
                  Subsidiaries into any acquisition, joint venture, or
                  franchising agreement or arrangement which is material
                  to U.S. Healthcare and its Subsidiaries, taken as a
                  whole; or 

                       (m) any entry by U.S. Healthcare or any of its
                  Subsidiaries into any agreement or arrangement with a
                  third party on an exclusive basis to offer or market
                  any of the following services of such third party: 
                  group life, disability, managed workers' compensation,
                  long term care, dental, behavioral or pharmacy
                  benefits.

                       SECTION 3.12. No Undisclosed Material
               Liabilities.  There are no liabilities, commitments or
               obligations (whether pursuant to contracts or otherwise)
               of U.S. Healthcare or any Subsidiary of U.S. Healthcare
               of any kind whatsoever, whether accrued, contingent,
               absolute, determined, determinable or otherwise,
               including, without limitation, any fines, disciplinary
               actions or other adverse actions that may be taken or
               reported concerning the conduct of U.S. Healthcare or any
               of its Subsidiaries, other than:

                       (a)  liabilities, commitments or obligations
                  disclosed or provided for in the U.S. Healthcare
                  Balance Sheet or in the U.S. Healthcare 10-K;

                       (b)  liabilities, commitments or obligations
                  incurred in the ordinary course of business since the
                  U.S. Healthcare Balance Sheet Date;

                       (c)  liabilities, commitments or obligations
                  under this Agreement; and

                       (d)  liabilities, commitments or obligations
                  which, individually or in the aggregate, have not had,
                  and are not reasonably likely to have, a Material
                  Adverse Effect on U.S. Healthcare.

                       SECTION 3.13. Litigation; Investigations.  Except
               as disclosed or referred to in the U.S. Healthcare 10-K
               or in Schedule 3.13, there is no action, claim, suit,
               investigation, proceeding or examination, including,
               without limitation, any insurance or health related
               investigations, proceedings or examinations pending
               against or affecting, or to the knowledge of U.S.
               Healthcare threatened against or affecting, U.S.
               Healthcare or any Subsidiary of U.S. Healthcare or any of
               their respective properties before any court or
               arbitrator or any governmental body, agency, authority or
               official which, net of reserves established therefor
               reflected in the U.S. Healthcare 10-K and giving effect
               to reinsurance probable of recovery, individually or in
               the aggregate, is reasonably likely to have a Material
               Adverse Effect on U.S. Healthcare.

                       SECTION 3.14. Taxes.  (a)  All Tax Returns
               required to be filed (taking into account all extensions
               heretofore granted) on or before the date hereof or the
               Merger Date by or on behalf of U.S. Healthcare or any of
               its Subsidiaries have been filed within the time and in
               the manner prescribed by law, other than those Tax
               Returns the failure of which to file would not have a
               Material Adverse Effect on U.S. Healthcare.

                       (b)  As of the time of filing, all such Tax
                  Returns correctly reflected in all material respects
                  all facts regarding the income, business, assets,
                  operations, activities and status of U.S. Healthcare
                  and its Subsidiaries and any other information
                  required to be shown therein.  

                       (c)  All Taxes shown to be due and payable by
                  U.S. Healthcare and any of its Subsidiaries on all
                  such Tax Returns have been timely paid, or withheld
                  and remitted to the appropriate Taxing Authorities.

                       (d)  Except as set forth on Schedule 3.14, all
                  applicable statutes of limitations for the assessment
                  of material Taxes against U.S. Healthcare and any of
                  its Subsidiaries have expired.  No deficiency payment
                  of any Taxes for any period has been asserted by any
                  Taxing Authority which remains unsettled at the date
                  hereof except for deficiencies which would not have a
                  Material Adverse Effect on U.S. Healthcare.

                       (e)  Except for Tax Returns required to be filed
                  with respect to the 1995 taxable year, neither U.S.
                  Healthcare nor any of its Subsidiaries has requested
                  any extension of time within which to file any Tax
                  Return which has not yet been filed.

                       (f)  There are no material Liens upon any
                  property or assets of U.S. Healthcare or any of its
                  Subsidiaries for Taxes, except for Tax liens in
                  respect of Taxes not yet due or which are being
                  contested in good faith and by appropriate proceedings
                  (and for the payment of which adequate reserves have
                  been provided) and reflected in the U.S. Healthcare
                  10-K.

                       (g)  Except as set forth on Schedule 3.14, there
                  is no claim, audit, action, suit, proceeding, or
                  investigation now pending or threatened against or
                  with respect to U.S. Healthcare or any of its
                  Subsidiaries in respect of any Taxes.

                       (h)  Neither U.S. Healthcare nor any of its
                  Subsidiaries has any contractual obligations under any
                  tax sharing agreement or similar agreement or tax
                  indemnity agreement with any corporation which is not
                  a member of the affiliated group of corporations of
                  which U.S. Healthcare is the common parent.

                       (i)  There are no requests for rulings or
                  determinations in respect of any Tax pending between
                  U.S. Healthcare or any of its Subsidiaries and any
                  Taxing Authorities.

                       (j)  Neither U.S. Healthcare nor any of its
                  Subsidiaries owns any interest in real property in the
                  State of New York or in any other jurisdiction in
                  which a Tax is imposed on the transfer of a
                  controlling interest in an entity that owns any
                  interest in real property.

                       (k)  For purposes of this Agreement, "TAXES"
                  means all United States Federal, state, local and
                  foreign taxes, levies and other assessments,
                  including, without limitation, all income, sales, use,
                  goods and services, value added, capital, capital
                  gains, net worth, transfer, profits, withholding,
                  payroll, employer health, unemployment insurance
                  payments, excise, real property and personal property
                  taxes, and any other taxes, assessments or similar
                  charges in the nature of a tax, including, without
                  limitation, interest, additions to tax, fines and
                  penalties, imposed by a governmental or public body,
                  agency, official or authority (the "TAXING
                  AUTHORITIES").  For purposes of this Agreement, "TAX
                  RETURN" shall mean any return, report, information
                  return or other document (including any related or
                  supporting information) required to be filed with any
                  Taxing Authority in connection with the determination,
                  assessment, collection, administration or imposition
                  of any Taxes.

                       SECTION 3.15. ERISA.  (a)  Schedule 3.15 contains
               a list identifying each "EMPLOYEE BENEFIT PLAN", as
               defined in Section 3(3) of the Employee Retirement Income
               Security Act of 1974 ("ERISA"), which (i) is subject to
               any provision of ERISA and (ii) is maintained,
               administered or contributed to by U.S. Healthcare or any
               Subsidiary of U.S. Healthcare and covers any employee or
               former employee of U.S. Healthcare or any Subsidiary of
               U.S. Healthcare or under which U.S. Healthcare or any
               Subsidiary of U.S. Healthcare has any liability.  Copies
               of such plans (and, if applicable, related trust
               agreements) and all amendments thereto and written
               interpretations thereof have been furnished to Aetna
               together with (A) the three most recent annual reports
               (Form 5500 including, if applicable, Schedule B thereto)
               prepared in connection with any such plan and (B) the
               most recent actuarial valuation report prepared in
               connection with any such plan.  Such plans are referred
               to collectively herein as the "U.S. HEALTHCARE EMPLOYEE
               PLANS".  For purposes of this Section, "ERISA AFFILIATE"
               of any Person means any other Person which, together with
               such Person, would be treated as a single employer under
               Section 414 of the Code.  The only U.S. Healthcare
               Employee Plans which individually or collectively would
               constitute an "employee pension benefit plan" as defined
               in Section 3(2) of ERISA (the "PENSION PLANS") are
               identified as such in the list referred to above.  U.S.
               Healthcare has provided Aetna with complete age, salary,
               service and related data as of a recent date for
               employees and former employees of U.S. Healthcare and any
               Subsidiary of U.S. Healthcare covered under the Pension
               Plans.

                       (b)  Except as set forth in Schedule 3.15, no
               U.S. Healthcare Employee Plan (i) constitutes a
               "multiemployer plan", as defined in Section 3(37) of
               ERISA (a "MULTIEMPLOYER PLAN"), (ii) is maintained in
               connection with any trust described in Section 501(c)(9)
               of the Code  or (iii) is subject to Title IV of ERISA. 
               Neither U.S. Healthcare nor any ERISA Affiliate of U.S.
               Healthcare has (i) engaged in, or is a successor or
               parent corporation to an entity that has engaged in, a
               transaction described in Sections 4069 or 4212(c) of
               ERISA or (ii) incurred, or reasonably expects to incur
               prior to the Merger Date, (A) any liability under Title
               IV of ERISA arising in connection with the termination
               of, or a complete or partial withdrawal from, any plan
               covered or previously covered by Title IV of ERISA or (B)
               any liability under Section 4971 of the Code that in
               either case could become a liability of Parent or any of
               its Affiliates after the Merger Date.  Nothing done or
               omitted to be done and no transaction or holding of any
               asset under or in connection with any U.S. Healthcare
               Employee Plan has or will make U.S. Healthcare or any
               Subsidiary of U.S. Healthcare, or any officer or director
               of U.S. Healthcare or any Subsidiary of U.S. Healthcare,
               subject to any liability under Title I of ERISA or liable
               for any tax pursuant to Section 4975 of the Code that
               could have a Material Adverse Effect on U.S. Healthcare.

                       (c)  With respect to each U.S. Healthcare
               Employee Plan which is intended to be qualified under
               Section 401(a) of the Code, U.S. Healthcare has received
               a favorable determination letter that the plan is so
               qualified and that each trust forming a part thereof is
               exempt from tax pursuant to Section 501(a) of the Code
               and, to the knowledge of U.S. Healthcare, no event has
               occurred since the date of such determination that would
               adversely affect such qualification and exception.  U.S.
               Healthcare has furnished to Aetna copies of the most
               recent Internal Revenue Service determination letters
               with respect to each such Plan.  Each U.S. Healthcare
               Employee Plan has been maintained in all material
               respects in compliance with its terms and with the
               requirements prescribed by any and all statutes, orders,
               rules and regulations, including but not limited to ERISA
               and the Code, which are applicable to such Plan.

                       (d)  Except as set forth in Schedule 3.15 or in,
               connection with the transactions contemplated by this
               Agreement, there is no contract, agreement, plan or
               arrangement covering any employee or former employee of
               U.S. Healthcare or any Subsidiary of U.S. Healthcare
               that, individually or collectively, could give rise to
               the payment of any amount that would not be deductible
               pursuant to the terms of Sections 162(a)(1), 162(m) or
               280G of the Code.

                       (e)  U.S. Healthcare has provided Aetna with a
               list of each employment, severance or other similar
               contract, arrangement or policy and each plan or
               arrangement (written or oral) providing for insurance
               coverage (including any self-insured arrangements),
               workers' compensation, disability benefits, supplemental
               unemployment benefits, vacation benefits, retirement
               benefits or for deferred compensation, profit-sharing,
               bonuses, stock options, stock appreciation or other forms
               of incentive compensation or post-retirement insurance,
               compensation or benefits which (i) is not an U.S.
               Healthcare Employee Plan, (ii) is entered into,
               maintained or contributed to, as the case may be, by U.S.
               Healthcare or any of its Subsidiaries and (iii) covers
               any employee or former employee of U.S. Healthcare or any
               of its Subsidiaries.  Such contracts, plans and
               arrangements as are described above, copies or
               descriptions of all of which have been furnished or made
               available previously to Aetna, are referred to
               collectively herein as the "U.S. HEALTHCARE BENEFIT
               ARRANGEMENTS".  Each U.S. Healthcare Benefit Arrangement
               has been maintained in substantial compliance with its
               terms and with the requirements prescribed by any and all
               statutes, orders, rules and regulations that are
               applicable to such U.S. Healthcare Benefit Arrangement.

                       (f)  Except for the Retiree Health Benefit Plan,
               neither U.S. Healthcare nor any Subsidiary of U.S.
               Healthcare has any current or projected liability in
               respect of post-employment or post-retirement health or
               medical or life insurance benefits for retired, former or
               current employees of U.S. Healthcare or any Subsidiary of
               U.S. Healthcare, except as required to avoid excise tax
               under Section 4980B of the Code.  No condition exists
               that would prevent U.S. Healthcare or any Subsidiary of
               U.S. Healthcare from amending or terminating any U.S.
               Healthcare Employee Plan or U.S. Healthcare Benefit
               Arrangement providing health or medical benefits in
               respect of any active employee of U.S. Healthcare or any
               Subsidiary other than limitations imposed under the terms
               of a collective bargaining agreement.

                       (g)  Except as disclosed in writing to Aetna
               prior to the date hereof, there has been no amendment to,
               written interpretation or announcement (whether or not
               written) by U.S. Healthcare or any of its Subsidiaries
               relating to, or change in employee participation or
               coverage under, any U.S. Healthcare Employee Plan or U.S.
               Healthcare Benefit Arrangement which would increase
               materially the expense of maintaining such U.S.
               Healthcare Employee Plan or U.S. Healthcare Benefit
               Arrangement above the level of the expense incurred in
               respect thereof for the fiscal year ended on the U.S.
               Healthcare Balance Sheet Date.

                       (h)  Except as set forth in Schedule 3.15,
               neither U.S. Healthcare nor any Subsidiary of U.S.
               Healthcare is a party to or subject to any union contract
               or any employment contract or arrangement providing for
               annual future cash compensation of $250,000 or more with
               any officer, director or employee.

                       (i)  U.S. Healthcare has provided or made
               available a list of (a) the names, titles, annual
               salaries and other compensation of all officers of U.S.
               Healthcare or its Subsidiaries and all other employees of
               U.S. Healthcare or its Subsidiaries whose annual base
               salary exceeds $250,000 and (b) the wage rates for non-
               salaried employees of U.S. Healthcare and its
               Subsidiaries (by classification).  None of the employees
               referred to in clause (a) and no other key employee of
               U.S. Healthcare or its Subsidiaries has disclosed to U.S.
               Healthcare and its Subsidiaries that he or she intends to
               resign or retire as a result of the transactions
               contemplated by this Agreement, or otherwise for any
               other reason within one year after the date of this
               Agreement (other than the Principal Shareholder).

                       (j)  U.S. Healthcare and its Subsidiaries are in
               compliance with all currently applicable laws respecting
               employment and employment practices, terms and conditions
               of employment and wages and hours, and are not engaged in
               any unfair labor practice, failure to comply with which
               or engagement in which, as the case may be, would
               reasonably be expected to have a Material Adverse Effect
               on U.S. Healthcare.  There is no unfair labor practice
               complaint pending or, to the knowledge of U.S.
               Healthcare, threatened against U.S. Healthcare or any
               Subsidiary of U.S. Healthcare before the National Labor
               Relations Board which would reasonably be expected to
               have a Material Adverse Effect on U.S. Healthcare; and

                       (k)  None of the assets of U.S. Healthcare
               constitute the assets of any employee benefit plan
               subject to Title I of ERISA or Section 4975 of the Code.

                       SECTION 3.16. Permits; Compliance with Laws.  (a)
               U.S. Healthcare and its Subsidiaries hold all
               governmental licenses, authorizations, consents and
               approvals required to carry on their respective
               businesses as now conducted (the "U.S. HEALTHCARE
               PERMITS") and are in compliance in all respects with the
               terms of the U.S. Healthcare Permits, except for any
               noncompliance which, individually or in the aggregate,
               has not had and is not reasonably likely to have a
               Material Adverse Effect on U.S. Healthcare or as
               disclosed in the U.S. Healthcare 10-K.  Except as
               disclosed in the U.S. Healthcare 10-K, neither U.S.
               Healthcare nor any Subsidiary of U.S. Healthcare is in
               violation of, or has violated, any applicable provisions
               of any laws, rules, ordinances or regulations, in any
               such case, in a manner that, individually or in the
               aggregate, has had or is reasonably likely to have a
               Material Adverse Effect on U.S. Healthcare.  U.S.
               Healthcare has advised Aetna of the facts underlying
               currently pending formal proceedings with respect to any
               potentially material violations of any of the foregoing.

                       (b)  U.S. Healthcare and its Subsidiaries have
               complied in all respects with all laws, rules, ordinances
               and regulations governing all Medicare, Medicaid and any
               other contracts with any government entity and have filed
               all returns, cost reports and other filings in the manner
               prescribed by applicable laws, rules, ordinances or
               regulations, except for any such non-compliance or
               failure to make any such filing or filings, which
               individually or in the aggregate, has not had and is not
               reasonably expected to have a Material Adverse Effect on
               U.S. Healthcare.  All returns, cost reports and other
               financial filings made by U.S. Healthcare or any of its
               Subsidiaries to Medicare, Medicaid or any other
               governmental health or welfare related entity or third
               party payor were true, correct and complete in all
               material respects as of their date of filing.  Neither
               U.S. Healthcare nor any of its Subsidiaries has been
               subject to any written finding of fraudulent procedures
               or practices arising out of the provision of health care
               services relating to Medicare, Medicaid or any other
               government entity with which U.S. Healthcare or any
               Subsidiary of U.S. Healthcare has a contract to provide
               health care services or benefits, and except as disclosed
               in Schedule 3.16, neither U.S. Healthcare nor any of its
               Subsidiaries is currently subject to any pending or
               threatened audit relating to such fraudulent procedures
               or practices.

                       SECTION 3.17. Finders' Fees.  Except for Goldman,
               Sachs & Co. and Merrill Lynch & Co., Inc., copies of
               whose engagement agreements have been or will be promptly
               provided to Aetna, there is no investment banker, broker,
               finder or other intermediary which has been retained by,
               or is authorized to act on behalf of, U.S. Healthcare or
               any Subsidiary of U.S. Healthcare who might be entitled
               to any fee or commission from U.S. Healthcare, Aetna or
               any Subsidiary or Affiliate of either upon consummation
               of the transactions contemplated by this Agreement.

                       SECTION 3.18. Intellectual Property Rights.  (a) 
               U.S. Healthcare and its Subsidiaries own or have rights
               to use, free and clear of all Liens, and have not
               assigned, hypothecated or otherwise encumbered, the name
               "U.S. Healthcare" and any of U.S. Healthcare's related
               trademarks, tradenames, service marks or logos.  Except
               as set forth on Schedule 3.18, U.S. Healthcare has no
               knowledge of any current pending or threatened
               infringement or challenge by any Person with respect to
               the name "U.S. Healthcare" and the U.S. Healthcare logo.

                       (b)  Except as set forth on Schedule 3.18, each
               of U.S. Healthcare and its Subsidiaries owns outright or
               holds valid and enforceable licenses to all copies of the
               operating and applications computer software programs and
               databases material to the conduct by U.S. Healthcare and
               its Subsidiaries of their respective businesses (other
               than programs and databases that are generally
               commercially available) as of the date hereof
               (collectively, the "U.S. HEALTHCARE SOFTWARE").  None of
               the U.S. Healthcare Software used by U.S. Healthcare and
               its Subsidiaries, and no use thereof, infringes upon or
               violates any patent, copyright, trade secret or other
               proprietary right of any other Person and, to the best
               knowledge of U.S. Healthcare, no claim with respect to
               any such infringement or violation is pending or
               threatened, except for any such infringement which,
               individually or in the aggregate, has not had and is not
               reasonably expected to have a Material Adverse Effect on
               U.S. Healthcare.  Upon consummation of the transactions
               contemplated by this Agreement, except for U.S.
               Healthcare Software sold or otherwise disposed of in the
               ordinary course of business after the date hereof, each
               of U.S. Healthcare and its Subsidiaries (i) will continue
               to own all the U.S. Healthcare Software owned by it, free
               and clear of all claims, Liens, encumbrances, obligations
               and liabilities and (ii) with respect to all agreements
               for the lease or license of U.S. Healthcare Software
               which require consents or other actions as a result of
               the consummation of the transactions contemplated by this
               Agreement in order for U.S. Healthcare and its
               Subsidiaries to continue to use and operate such U.S.
               Healthcare Software after the consummation of the
               transactions contemplated by this Agreement, shall have
               obtained such consents or taken such other actions so
               required prior to the Merger Date, except for such
               consents or actions that if not obtained or taken,
               individually or in the aggregate, would not be reasonably
               expected to have a Material Adverse Effect on U.S.
               Healthcare.

                       SECTION 3.19. Takeover Statutes.  The provisions
               of Subchapters G, H, I and J of Chapter 25 of the
               Pennsylvania Law are not applicable to U.S. Healthcare.

                       SECTION 3.20. Fairness Opinion.  U.S. Healthcare
               has received the opinion of Merrill Lynch & Co., Inc. to
               the effect that, as of the date hereof, the U.S.
               Healthcare Merger Consideration to be received by the
               holders of U.S. Healthcare Stock (other than Aetna and
               its Affiliates) in the U.S. Healthcare Sub Merger is fair
               to such holders from a financial point of view and the
               opinion of Goldman, Sachs & Co. that the U.S. Healthcare
               Merger Consideration to be received by the holders of
               U.S. Healthcare Stock pursuant to this Agreement is, as
               of the date of this Agreement, fair to such holders.  It
               is agreed and understood that such opinions are for the
               sole benefit of the Board of Directors of U.S. Healthcare
               and may not be relied upon by Parent, Aetna or any third
               party.

                                       ARTICLE 4

                             REPRESENTATIONS AND WARRANTIES
                                        OF AETNA

                       Aetna represents and warrants to U.S. Healthcare
               that:

                       SECTION 4.1.  Corporate Existence and Power. 
               Aetna is duly incorporated and validly existing as an
               insurance corporation in good standing under the laws of
               its jurisdiction of incorporation, and has all corporate
               powers and all governmental licenses, authorizations,
               consents and approvals required to carry on its business
               as now conducted.  Aetna is duly qualified to do business
               as a foreign corporation and is in good standing in each
               jurisdiction where the character of the property owned or
               leased by it or the nature of its activities makes such
               qualification necessary, except for those jurisdictions
               where the failure to be so qualified would not,
               individually or in the aggregate, have a Material Adverse
               Effect on Aetna.  Aetna has heretofore delivered to U.S.
               Healthcare true and complete copies of Aetna's
               certificate of incorporation and bylaws as currently in
               effect.

                       SECTION 4.2.  Corporate Authorization.  The
               execution, delivery and, subject to receipt of the
               approvals referred to in Section 4.3, the performance by
               Aetna of this Agreement and the consummation by Aetna of
               the transactions contemplated by this Agreement are
               within the corporate powers of Aetna and have been duly
               authorized by all necessary corporate action, except for
               any required approval by Aetna's shareholders of this
               Agreement and the transactions contemplated hereby.  This
               Agreement has been duly executed and delivered by Aetna
               and constitutes a valid and binding agreement of Aetna
               enforceable against Aetna in accordance with its terms,
               subject to (a) bankruptcy, insolvency, reorganization,
               fraudulent transfer, moratorium and other similar laws
               now or hereafter in effect relating to or affecting
               creditors' rights generally and, in the case of Aetna,
               the rights of creditors of insurance companies generally
               and (b) general principles of equity (regardless of
               whether considered in a proceeding at law or in equity).

                       SECTION 4.3.  Governmental Authorization.  The
               execution, delivery and performance by Aetna of this
               Agreement and the consummation by Aetna of the
               transactions contemplated by this Agreement require no
               action by or in respect of, or filing with, any
               governmental body, agency, official or authority other
               than (a) the filing of an Aetna Certificate of Merger in
               accordance with the Connecticut Law; (b) compliance with
               any applicable requirements of the HSR Act; (c)
               compliance with any applicable requirements of the 1934
               Act; (d) compliance with any applicable requirements of
               the 1933 Act; (e) compliance with any applicable foreign
               or state securities or Blue Sky laws; (f) approvals or
               filings required under laws, rules and regulations
               governing insurance and insurance companies, health
               maintenance organizations, health care services plans,
               third party administrators or other managed health care
               organizations; (g) the filing with the Secretary of the
               State and, if required, the Insurance Commissioner of the
               State of Connecticut of an amendment to Parent's
               certificate of incorporation to reflect the changes
               contemplated by Section 7.11 hereof; and (h) filings and
               notices not required to be made or given until after the
               Merger Date.

                       SECTION 4.4.  Non-Contravention.  Except as
               disclosed on Schedule 4.4, the execution, delivery and
               performance by Aetna of this Agreement and the
               consummation by Aetna of the transactions contemplated by
               this Agreement do not and will not (a) assuming receipt
               of the approvals referred to in Section 4.2, contravene
               or conflict with the certificate of incorporation or
               bylaws of Aetna, (b) assuming compliance with the matters
               referred to in Section 4.3, contravene or conflict with
               or constitute a violation of any provision of any law,
               regulation, judgment, injunction, order or decree binding
               upon or applicable to Aetna or any Subsidiary of Aetna,
               (c) constitute a default (or an event which with notice,
               the lapse of time or both would become a default) under
               or give rise to a right of termination, cancellation or
               acceleration of any right or obligation of Aetna or any
               Subsidiary of Aetna or to a loss of any benefit to which
               Aetna or any Subsidiary of Aetna is entitled under any
               provision of any agreement, contract or other instrument
               binding upon Aetna or any Subsidiary of Aetna or any
               license, franchise, permit or other similar authorization
               held by Aetna or any Subsidiary of Aetna, or (d) result
               in the creation or imposition of any Lien on any asset of
               Aetna or any Subsidiary of Aetna, except for such
               contraventions, conflicts or violations referred to in
               clause (b) or defaults, rights of termination,
               cancellation or acceleration, losses or Liens referred to
               in clause (c) or (d) that would not, individually or in
               the aggregate, have a Material Adverse Effect on Aetna.

                       SECTION 4.5.  Capitalization.  As of February 29,
               1996, the authorized capital stock of Aetna consisted of
               10,000,000 shares of Class A Voting Preferred Stock
               without par value ("AETNA CLASS A STOCK"), 15,000,000
               shares of Class B Voting Preferred Stock without par
               value ("AETNA CLASS B STOCK"), 15,000,000 shares of Class
               C Non-Voting Preferred Stock without par value ("AETNA
               CLASS C STOCK") and 250,000,000 shares of Aetna common
               stock without par value ("AETNA COMMON STOCK").  As of
               February 29, 1996, there were (i) no shares of Aetna
               Class A Stock outstanding, (ii) no shares of Aetna Class
               B Stock outstanding, (iii) no shares of Aetna Class C
               Stock outstanding and (iv) 114,990,477 shares of Aetna
               Common Stock outstanding.  As of February 29, 1996, an
               aggregate of 15,208,090 shares of Aetna Common Stock were
               reserved for issuance or issuable under employee benefit
               or other compensation plans or programs or dividend
               reinvestment plans of Aetna.  All outstanding shares of
               capital stock of Aetna have been duly authorized and
               validly issued and are fully paid and nonassessable.  

                       SECTION 4.6.  SEC Filings.  (a)  Aetna has
               delivered to U.S. Healthcare (i) Aetna's annual reports
               on Form 10-K for its fiscal years ended December 31, 1995
               (the "AETNA 10-K"), 1994 and 1993, (ii) its proxy or
               information statements relating to meetings of or actions
               taken without a meeting by Aetna's shareholders held
               since January 1, 1993, and (iii) all of its other
               reports, statements, schedules and registration
               statements filed with the SEC since January 1, 1993.

                       (b)  As of its filing date, each such report or
               statement, schedule or registration filed pursuant to the
               1934 Act did not contain any untrue statement of a
               material fact or omit to state any material fact
               necessary in order to make the statements made therein,
               in the light of the circumstances under which they were
               made, not misleading. 

                       (c)  Each such registration statement, as amended
               or supplemented, if applicable, filed pursuant to the
               1933 Act as of the date such registration statement or
               amendment became effective did not contain any untrue
               statement of a material fact or omit to state any
               material fact required to be stated therein or necessary
               to make the statements therein not misleading.

                       SECTION 4.7.  Financial Statements.  The audited
               consolidated financial statements of Aetna included in
               its annual reports on Form 10-K referred to in Section
               4.6 fairly present, in conformity with generally accepted
               accounting principles applied on a consistent basis
               (except as may be indicated in the notes thereto), the
               consolidated financial position of Aetna and its
               consolidated Subsidiaries as of the dates thereof and
               their consolidated results of operations and cash flows
               for the periods then ended.  For purposes of this
               Agreement, "AETNA BALANCE SHEET" means the consolidated
               balance sheet of Aetna as of December 31, 1995 set forth
               in the Aetna 10-K and the "AETNA BALANCE SHEET DATE"
               means December 31, 1995.

                       SECTION 4.8.  Disclosure Documents.   (a)  Each
               document required to be filed by Aetna with the SEC in
               connection with the transactions contemplated by this
               Agreement (the "AETNA DISCLOSURE DOCUMENTS"), including,
               without limitation, the proxy or information statement of
               Aetna (the "AETNA PROXY STATEMENT"), if any, to be filed
               with the SEC in connection with this Agreement and the
               Aetna Sub Merger, and any amendments or supplements
               thereto, will, when filed, comply as to form in all
               material respects with the applicable requirements of the
               1934 Act.

                       (b)  At the time the Aetna Proxy Statement or any
               amendment or supplement thereto is first mailed to
               shareholders of Aetna and at the time such shareholders
               vote on the proposals relating to this Agreement and the
               Aetna Sub Merger set forth therein, the Aetna Proxy
               Statement, as supplemented or amended, if applicable,
               will not contain any untrue statement of a material fact
               or omit to state any material fact necessary in order to
               make the statements made therein, in light of the
               circumstances under which they were made, not misleading. 
               At the time of the filing of any Aetna Disclosure
               Document other than the Aetna Proxy Statement and at the
               time of any distribution thereof, such Aetna Disclosure
               Document will not contain any untrue statement of a
               material fact or omit to state a material fact necessary
               in order to make the statements made therein, in the
               light of the circumstances under which they were made,
               not misleading.  The representations and warranties
               contained in this Section 4.8 will not apply to
               statements included in or omissions from the Aetna
               Disclosure Documents based upon information furnished to
               Aetna in writing by U.S. Healthcare or Parent
               specifically for use therein.

                       SECTION 4.9.  Information Supplied.  The
               information supplied or to be supplied by Aetna for
               inclusion or incorporation by reference in (i) the U.S.
               Healthcare Proxy Statement or any amendment or supplement
               thereto will not, at the time the U.S. Healthcare Proxy
               Statement is first mailed to shareholders of U.S.
               Healthcare and at the time such shareholders vote on the
               approval and adoption of this Agreement, contain any
               untrue statement of a material fact or omit to state any
               material fact necessary in order to make the statements
               made therein, in the light of the circumstances under
               which they were made, not misleading, (ii) the Form S-4
               or any amendment or supplement thereto will not, at the
               time the Form S-4 or any amendment or supplement thereto
               become effective under the 1933 Act and on the Merger
               Date, contain any untrue statement of a material fact or
               omit to state a material fact required to be stated
               therein or necessary to make the statements therein not
               misleading and (iii) any U.S. Healthcare Disclosure
               Document or Parent Disclosure Document (other than the
               U.S. Healthcare Proxy Statement and the Form S-4) will
               not, at the time of effectiveness of such U.S. Healthcare
               Disclosure Document and at the time of any distribution
               thereof contain any untrue statement of a material fact
               or omit to state a material fact necessary in order to
               make the statements made therein, in light of the
               circumstances under which they were made, not misleading.

                       SECTION 4.10. Absence of Certain Changes.  Except
               as disclosed on Schedule 4.10 or as specifically
               permitted by Section 6.5 and except as disclosed in the
               Aetna 10-K and except for the proposed sale of Aetna's
               property-casualty business and transactions related
               thereto, since the Aetna Balance Sheet Date, Aetna has
               conducted the Aetna Health Operations in the ordinary
               course consistent with past practice and there has not
               been:

                       (a)  any event, occurrence or facts which has had
                  or is reasonably expected to have a Material Adverse
                  Effect on Aetna;

                       (b)  any declaration, setting aside or payment of
                  any dividend or other distribution with respect to any
                  shares of capital stock of Aetna (other than payment
                  of Aetna's regular quarterly dividend on Aetna Common
                  Stock in an amount not exceeding $0.69 per share), or
                  any repurchase, redemption or other acquisition by
                  Aetna or any Subsidiary of Aetna of any amount of
                  outstanding shares of capital stock or other
                  securities of, or other ownership interests in, Aetna
                  which repurchase, redemption or other acquisition,
                  individually or in the aggregate, is material to Aetna
                  and its Subsidiaries taken as a whole;

                       (c)  any amendment of any term of any outstanding
                  security of Aetna;

                       (d)  any incurrence, assumption or guarantee by
                  any of Aetna's domestic (U.S.) health care operations
                  ("AETNA HEALTH OPERATIONS") of any indebtedness from
                  any third party for borrowed money other than in the
                  ordinary course of business and in amounts and on
                  terms consistent with past practices;

                       (e)  any creation or assumption by Aetna Health
                  Operations of any Lien on any material asset other
                  than in the ordinary course of business consistent
                  with past practices;

                       (f)  any making of any loan, advance or capital
                  contribution by any Aetna Health Operations to or
                  investment in any Person other than (i) loans,
                  advances or capital contributions to or investments in
                  Subsidiaries of Aetna, (ii) investments in securities
                  consistent with past practice or (iii) other loans,
                  advances, capital contributions or investments in an
                  aggregate amount not exceeding $25,000,000;

                       (g)  any damage, destruction or other casualty
                  loss (whether or not covered by insurance) affecting
                  the business or assets of Aetna or any Subsidiary of
                  Aetna which, individually or in the aggregate, is or
                  may reasonably be expected to be material to Aetna and
                  its Subsidiaries, taken as a whole;

                       (h)  any transaction or commitment made, or any
                  contract or agreement entered into, by any Aetna
                  Health Operations relating to its assets or business
                  (including, without limitation, the acquisition or
                  disposition of any assets) or any relinquishment by
                  any Aetna Health Operations of any contract, license
                  or other right, which in any such case, individually
                  or in the aggregate, would have a Material Adverse
                  Effect on Aetna, other than transactions, commitments,
                  contracts or agreements contemplated by this
                  Agreement;

                       (i)  any change in any method of accounting or
                  accounting principle or practice by Aetna or any
                  Subsidiary of Aetna, except for any such change
                  required by reason of a concurrent change in generally
                  accepted accounting principles or statutory accounting
                  principles;

                       (j)  except for such contracts as would not be
                  material to Aetna and its Subsidiaries taken as a
                  whole or material to their operation in any Standard
                  Metropolitan Statistical Area, any entry by any Aetna
                  Health Operations into any contract limiting the right
                  of any Aetna Health Operations at any time on or after
                  the date of this Agreement or U.S. Healthcare or any
                  of its Subsidiaries or Affiliates at or after the
                  Merger Date, to engage in, or to compete with any
                  Person in, any business conducted by U.S. Healthcare,
                  including, without limitation, any contract which
                  includes exclusivity provisions restricting the
                  geographical area in which, or the method by which,
                  any such business may be conducted by Aetna or any of
                  its Subsidiaries or Affiliates, or by U.S. Healthcare
                  or any of its Subsidiaries or Affiliates after the
                  Merger Date; or

                       (k)  any entry by any Aetna Health Operations
                  into any acquisition, joint venture or franchising
                  agreement or arrangement which is material to Aetna
                  and its Subsidiaries taken as a whole; or

                       (m) any entry by any Aetna Health Operations or
                  any of its Subsidiaries into any agreement or
                  arrangement with a third party on an exclusive basis
                  to offer or market any of the following services of
                  such third party:  group life, disability, managed
                  workers' compensation, long term care, dental,
                  behavioral or pharmacy benefits.

                       SECTION 4.11. No Undisclosed Material
               Liabilities.  There are no liabilities, commitments or
               obligations (whether pursuant to contracts or otherwise)
               of Aetna or any Subsidiary of Aetna of any kind
               whatsoever, whether accrued, contingent, absolute,
               determined, determinable or otherwise, and there is no
               existing condition, situation or set of circumstances
               which could reasonably be expected to result in such a
               liability, commitment or obligation, including, without
               limitation, any fines, disciplinary actions or other
               adverse actions that may be taken or reported concerning
               the conduct of Aetna or any of its Subsidiaries, other
               than:

                       (a)  liabilities, commitments or obligations
                  disclosed or provided for in the Aetna Balance Sheet
                  or in the Aetna 10-K;

                       (b)  liabilities, commitments or obligations
                  incurred in the ordinary course of business since the
                  Aetna Balance Sheet Date;

                       (c)  liabilities, commitments or obligations
                  under this Agreement; and

                       (d)  liabilities, commitments or obligations
                  which, individually or in the aggregate, have not had,
                  and are not reasonably likely to have, a Material
                  Adverse Effect on Aetna. 

                       SECTION 4.12. Litigation; Investigations.  Except
               as disclosed or referred to in the Aetna 10-K or on
               Schedule 4.12, there is no action, claim, suit,
               investigation, proceeding or examination, including,
               without limitation, any insurance or health related
               investigations, proceedings or examinations pending
               against or affecting, or to the knowledge of Aetna
               threatened against or affecting, Aetna or any Subsidiary
               of Aetna or any of their respective properties before any
               court or arbitrator or any governmental body, agency,
               authority or official which, net of reserves established
               therefor reflected in the Aetna 10-K and giving effect to
               reinsurance probable of recovery, individually or in the
               aggregate, is reasonably likely to have a Material
               Adverse Effect on Aetna.

                       SECTION 4.13. Subsidiaries.  (a)  Each Subsidiary
               of Aetna is duly incorporated, validly existing (as an
               insurance corporation, corporation organized as a health
               maintenance organization or otherwise) and in good
               standing under the laws of its jurisdiction of
               incorporation, has all corporate powers and all
               governmental licenses, authorizations, consents and
               approvals required to carry on its business as now
               conducted and is duly qualified to do business as a
               foreign corporation or is duly licensed to do business as
               an insurer, a health maintenance organization or
               otherwise and is in good standing in each jurisdiction
               where the character of the property owned or leased by it
               or the nature of its activities makes such qualification
               necessary, except for those jurisdictions where failure
               to be so qualified or licensed would not, individually or
               in the aggregate, have a Material Adverse Effect on
               Aetna.  All material Subsidiaries and their respective
               jurisdictions of incorporation are identified in the
               Aetna 10-K.

                       (b)  Except as disclosed on Schedule 4.13, all of
               the outstanding capital stock of, or other ownership
               interests in, each Subsidiary of Aetna, is owned by
               Aetna, directly or indirectly, free and clear of any Lien
               and free of any other limitation or restriction
               (including, without limitation, any restriction on the
               right to vote, sell or otherwise dispose of such capital
               stock or other ownership interests).  Except as disclosed
               on Schedule 4.13, there are no outstanding (i) securities
               of Aetna or any Subsidiary of Aetna convertible into or
               exchangeable for shares of capital stock or other voting
               securities or ownership interests in any Subsidiary of
               Aetna, and (ii) options or other rights to acquire from
               Aetna or any Subsidiary of Aetna, and no other obligation
               of Aetna or any Subsidiary of Aetna to issue, any capital
               stock, voting securities or other ownership interests in,
               or any securities convertible into or exchangeable for,
               any capital stock, voting securities or ownership
               interests in, any Subsidiary of Aetna (the items in
               clauses (i) and (ii) being referred to collectively as
               the "AETNA SUBSIDIARY SECURITIES").  Except as disclosed
               in Schedule 4.13, there are no outstanding obligations of
               Aetna or any Subsidiary of Aetna to repurchase, redeem or
               otherwise acquire any outstanding Aetna Subsidiary
               Securities.

                       SECTION 4.14. Taxes.  (a)  All Tax Returns
               required to be filed (taking into account all extensions
               heretofore granted) on or before the date hereof or the
               Merger Date by or on behalf of Aetna or any of its
               Subsidiaries have been filed within the time and in the
               manner prescribed by law, other than those Tax Returns
               the failure of which to file would not have a Material
               Adverse Effect on Aetna.

                       (b)  As of the time of filing, all such Tax
               Returns correctly reflected in all material respects all
               facts regarding the income, business, assets, operations,
               activities and status of Aetna and its Subsidiaries and
               any other information required to be shown therein.  

                       (c)  All Taxes shown to be due and payable by
               Aetna and any of its Subsidiaries on all such Tax Returns
               have been timely paid, or withheld and remitted to the
               appropriate Taxing Authorities.

                       (d)  Except as set forth on Schedule 4.14(d), all
               applicable statutes of limitations for the assessment of
               material Taxes against Aetna and any of its Subsidiaries
               have expired.  No deficiency payment of any Taxes for any
               period has been asserted by any Taxing Authority which
               remains unsettled at the date hereof except for
               deficiencies which would not have a Material Adverse
               Effect on Aetna.

                       (e)  Except for Tax Returns required to be filed
               with respect to the 1995 taxable year, neither Aetna nor
               any of its Subsidiaries has requested any extension of
               time within which to file any Tax Return which has not
               yet been filed.

                       (f)  There are no material Liens upon any
               property or assets of Aetna or any of its Subsidiaries
               for Taxes, except for Tax liens in respect of Taxes not
               yet due or which are being contested in good faith and by
               appropriate proceedings (and for the payment of which
               adequate reserves have been provided) and reflected in
               the Aetna 10-K.  

                       (g)  Except as set forth on Schedule 4.14(g),
               there is no claim, audit, action, suit, proceeding, or
               investigation now pending or threatened against or with
               respect to Aetna or any of its Subsidiaries in respect of
               any Taxes.

                       (h)  Except as set forth in Schedule 4.14(h),
               neither Aetna nor any of its Subsidiaries has any
               contractual obligations under any tax sharing agreement
               or similar agreement or tax indemnity agreement with any
               corporation which is not a member of the affiliated group
               of corporations of which Aetna is the common parent.

                       (i)  Except as set forth on Schedule 4.14(i),
               there are no requests for rulings or determinations in
               respect of any Tax pending between Aetna or any of its
               Subsidiaries and any Taxing Authorities.

                       SECTION 4.15. ERISA.  (a)  Neither Aetna nor any
               ERISA Affiliate of Aetna has (i) engaged in, or is a
               successor or parent corporation to an entity that has
               engaged in, a transaction described in Sections 4069 or
               4212(c) of ERISA or (ii) incurred, or reasonably expects
               to incur prior to the Merger Date, (A) any liability
               under Title IV of ERISA arising in connection with the
               termination of, or a complete or, except as may be
               incurred by reason of the transactions contemplated by
               the Stock Purchase Agreement, partial withdrawal from,
               any plan covered or previously covered by Title IV of
               ERISA or (B) any liability under Section 4971 of the Code
               that in either case could become a liability of Parent or
               any of its Affiliates after the Merger Date.  Nothing
               done or omitted to be done, and no transaction or holding
               of any asset under or in connection with any "employee
               benefit plan" as defined in Section 3(3) of ERISA which
               (i) is subject to any provision of ERISA and (ii) is
               maintained, administered or contributed to by Aetna or
               any Subsidiary of Aetna and covers any employees or
               former employees of Aetna or any Subsidiary of Aetna
               under which Aetna or any Subsidiary of Aetna has any
               liability (each an "AETNA EMPLOYEE PLAN") has or will
               make Aetna or any Subsidiary of Aetna, or any officer or
               director of Aetna or any Subsidiary of Aetna, subject to
               any liability under Title I of ERISA or liable for any
               tax pursuant to Section 4975 of the Code that could have
               a Material Adverse Effect on Aetna.

                       (b)  With respect to each Aetna Employee Plan
               which is intended to be qualified under Section 401(a) of
               the Code, Aetna has received a favorable determination
               letter that the plan is so qualified and that each trust
               forming a part thereof is exempt from tax pursuant to
               Section 501(a) of the Code.  Each Aetna Employee Plan has
               been maintained in all material respects in compliance
               with its terms and with the requirements prescribed by
               any and all statutes, orders, rules and regulations,
               including but not limited to ERISA and the Code, which
               are applicable to such Plan.

                       (c)  Each employment, severance or other similar
               contract, arrangement or policy and each plan or
               arrangement (written or oral) providing for insurance
               coverage (including any self-insured arrangements),
               workers' compensation, disability benefits, supplemental
               unemployment benefits, vacation benefits, retirement
               benefits or for deferred compensation, profit-sharing,
               bonuses, stock options, stock appreciation or other forms
               of incentive compensation or post-retirement insurance,
               compensation or benefits which (i) is not an Aetna
               Employee Plan, (ii) is entered into, maintained or
               contributed to, as the case may be, by Aetna or any of
               its Subsidiaries and (iii) covers any employee or former
               employee of Aetna or any of its Subsidiaries (the "AETNA
               BENEFIT ARRANGEMENTS") has been maintained in substantial
               compliance with its terms and with the requirements
               prescribed by any and all statutes, orders, rules and
               regulations that are applicable to such Aetna Benefit
               Arrangement.

                       (d)  Aetna and its Subsidiaries are in compliance
               with all currently applicable laws respecting employment
               and employment practices, terms and conditions of
               employment and wages and hours, and are not engaged in
               any unfair labor practice, failure to comply with which
               or engagement in which, as the case may be, would
               reasonably be expected to have a Material Adverse Effect
               on Aetna.  There is no unfair labor practice complaint
               pending or, to the knowledge of Aetna, threatened against
               Aetna or any Subsidiary of Aetna before the National
               Labor Relations Board which would reasonably be expected
               to have a Material Adverse Effect on Aetna.

                       (e)  None of the assets of Aetna constitute the
               assets of any employee benefit plan subject to Title I of
               ERISA or Section 4975 of the Code.

                       SECTION 4.16. Permits; Compliance with Laws.  (a)
               Aetna and its Subsidiaries hold all governmental
               licenses, authorizations, consents and approvals required
               to carry on their respective businesses as now conducted
               (the "AETNA PERMITS") and are in compliance in all
               respects with the terms of the Aetna Permits, except for
               any noncompliance which, individually or in the
               aggregate, has not had and is not reasonably likely to
               have a Material Adverse Effect on Aetna or as disclosed
               in the Aetna 10-K.  Except as disclosed in the Aetna 10-
               K, neither Aetna nor any Subsidiary of Aetna is in
               violation of, or has violated, any applicable provisions
               of any laws, rules, ordinances or regulations, in any
               such case, in a manner that, individually or in the
               aggregate, has had or is reasonably likely to have a
               Material Adverse Effect on Aetna.  Aetna has advised U.S.
               Healthcare of the facts underlying currently pending
               formal proceedings with respect to any potentially
               material violations of any of the foregoing.

                       (b) Neither Aetna nor any of its Subsidiaries has
               been subject to any written finding of fraudulent
               procedures or practices arising out of the provision of
               health care services relating to Medicare, Medicaid or
               any other government entity with which Aetna or any
               Subsidiary of Aetna has a contract to provide health care
               services or benefits, and except as disclosed in Schedule
               4.16, neither Aetna nor any of its Subsidiaries is
               currently subject to any pending or threatened audit
               relating to such fraudulent procedures or practices.

                       SECTION 4.17. Intellectual Property Rights.  (a) 
               Aetna and its Subsidiaries own or have rights to use,
               free and clear of all Liens, and have not assigned,
               hypothecated or otherwise encumbered, the name "Aetna"
               and any of Aetna's related trademarks, tradenames,
               service marks or logos.  Aetna has no knowledge of any
               current pending or threatened infringement or challenge
               by any Person with respect to the name "Aetna" and the
               Aetna logo.

                       (b)  Except as set forth on Schedule 4.17, each
               of Aetna and its Subsidiaries owns outright or holds
               valid and enforceable licenses to all copies of the
               operating and applications computer software programs and
               databases material to the conduct by Aetna and its
               Subsidiaries of their respective businesses (other than
               programs and databases that are generally commercially
               available) as of the date hereof (collectively, the
               "AETNA SOFTWARE").  None of the Aetna Software used by
               Aetna and its Subsidiaries, and no use thereof, infringes
               upon or violates any patent, copyright, trade secret or
               other proprietary right of any other Person and, to the
               best knowledge of Aetna, no claim with respect to any
               such infringement or violation is pending or threatened,
               except for any such infringement which, individually or
               in the aggregate, has not had and is not reasonably
               expected to have a Material Adverse Effect on Aetna. 
               Upon consummation of the transactions contemplated by
               this Agreement, except for Aetna Software sold or
               otherwise disposed of in the ordinary course of business
               after the date hereof, each of Aetna and its Subsidiaries
               (i) will continue to own all the Aetna Software owned by
               it, free and clear of all claims, Liens, encumbrances,
               obligations and liabilities and (ii) with respect to all
               agreements for the lease or license of Aetna Software
               which require consents or other actions as a result of
               the consummation of the transactions contemplated by this
               Agreement in order for Aetna and its Subsidiaries to
               continue to use and operate such Aetna Software after the
               consummation of the transactions contemplated by this
               Agreement, shall have obtained such consents or taken
               such other actions so required prior to the Merger Date,
               except for such consents or actions that if not obtained
               or taken, individually or in the aggregate, would not be
               reasonably expected to have a Material Adverse Effect on
               Aetna.

                       SECTION 4.18. Fairness Opinions.  Aetna has
               received opinions of Wasserstein Perella & Co., Inc. and
               J.P. Morgan & Co. to the effect that, as of the date
               hereof, the consideration to be paid to the holders of
               U.S. Healthcare Stock in the U.S. Healthcare Sub Merger
               is fair, from a financial point of view, to Aetna.  It is
               agreed and understood that such opinions are for the sole
               benefit of the Board of Directors of Aetna and may not be
               relied upon by Parent, U.S. Healthcare or any third
               party.

                                       ARTICLE 5

                              COVENANTS OF U.S. HEALTHCARE

                       U.S. Healthcare agrees that:

                       SECTION 5.1.  Conduct of U.S. Healthcare.  From
               the date hereof until the Merger Date, U.S. Healthcare
               and its Subsidiaries shall conduct their business in the
               ordinary course consistent with past practice and shall
               use their best efforts to preserve intact their business
               organizations and relationships with third parties and to
               keep available the services of their present officers and
               employees.  Without limiting the generality of the
               foregoing, from the date hereof until the Merger Date,
               except as contemplated by this Agreement, without the
               prior written consent of Aetna:

                       (a)  U.S. Healthcare will not adopt or propose
                  any change in its articles of incorporation or bylaws;

                       (b)  U.S. Healthcare will not, and will not
                  permit any Subsidiary of U.S. Healthcare to, (i) merge
                  or consolidate with any other Person (other than a
                  merger of consolidation of a Subsidiary of U.S.
                  Healthcare with a wholly-owned Subsidiary of U.S.
                  Healthcare) or (ii) acquire, whether by means of
                  merger, consolidation or otherwise, any business or
                  assets, other than acquisitions of products or
                  services used in the ordinary course operations of the
                  business of U.S. Healthcare and its Subsidiaries in a
                  manner consistent with past practice and other
                  acquisitions in an aggregate amount not exceeding
                  $75,000,000;

                       (c)  U.S. Healthcare will not, and will not
                  permit any Subsidiary of U.S. Healthcare to, sell,
                  lease, license or otherwise dispose of any material
                  assets or property except in the ordinary course of
                  business pursuant to contracts or commitments existing
                  on the date hereof;

                       (d)  U.S. Healthcare will not, and will not
                  permit any Subsidiary of U.S. Healthcare to, declare,
                  set aside or pay any dividend (other than the payment
                  of U.S. Healthcare regular quarterly dividend on U.S.
                  Healthcare Common Stock in an amount not exceeding
                  $0.275 per share and on Class B Stock in an amount not
                  exceeding $0.248 per share) or make any other
                  distribution with respect to any shares of U.S.
                  Healthcare' capital stock;

                       (e)  U.S. Healthcare will not, and will not
                  permit any Subsidiary of U.S. Healthcare to, create or
                  assume any Lien on any material asset other than in
                  the ordinary course consistent with past practices;

                       (f)  except pursuant to contracts or commitments
                  existing on the date hereof and other than the
                  issuance of an aggregate of 150,000 options to acquire
                  U.S. Healthcare Stock and/or shares of restricted
                  stock of U.S. Healthcare to Persons other than the
                  Specified U.S. Healthcare Officers, U.S. Healthcare
                  will not, and will not permit any Subsidiary of U.S.
                  Healthcare to, issue, deliver or sell, or authorize or
                  propose the issuance, delivery or sale of, any U.S.
                  Healthcare Securities, any U.S. Healthcare Subsidiary
                  Securities or any securities convertible into or
                  exchangeable for, or any rights, warrants or options
                  to acquire, any U.S. Healthcare Securities or U.S.
                  Healthcare Subsidiary Securities;

                       (g) Except as disclosed on Schedule 5.1(g), (i) 
                  U.S. Healthcare will not split, combine or reclassify,
                  or take any other similar action with respect to, any
                  capital stock of U.S. Healthcare, and (ii) U.S.
                  Healthcare will not, and will not permit any
                  Subsidiary of U.S. Healthcare to, repurchase, redeem
                  or otherwise acquire an amount of shares of capital
                  stock of, or other ownership interests in, U.S.
                  Healthcare or any Subsidiary of U.S. Healthcare, which
                  repurchase, redemption or other acquisition,
                  individually or in the aggregate, is material to U.S.
                  Healthcare and its Subsidiaries, taken as a whole;

                       (h)  Except for borrowings or guarantees in the
                  ordinary course of business consistent with past
                  practice, U.S. Healthcare will not, and will not
                  permit any Subsidiary of U.S. Healthcare to, incur or
                  assume any indebtedness from any third party for
                  borrowed money or guarantee any such indebtedness;

                       (i)  Except for (i) loans, advances or capital
                  contributions to or investments in Subsidiaries of
                  U.S. Healthcare, (ii) investments in securities
                  consistent with past practices or (iii) other loans,
                  advances, capital contributions or investments in an
                  aggregate amount not exceeding $25,000,000, U.S.
                  Healthcare will not, and will not permit any
                  Subsidiary of U.S. Healthcare to, make any material
                  loans, advances or capital contributions to, or
                  investments in, any other Person;

                       (j)  except for new employment agreements with
                  those Specified U.S. Healthcare Officers listed on
                  Schedule 8.2(b) in the form attached hereto as
                  Schedule 3.11(j)(A), U.S. Healthcare will not, and
                  will not permit any of its Subsidiaries to: (i) (A)
                  grant any severance or termination pay to, or enter
                  into any employment, termination or severance
                  arrangement with, any Specified U.S. Healthcare
                  Officer or, (B) except in the ordinary course of
                  business consistent in magnitude and character with
                  past practice and with the terms of severance or
                  termination arrangements in effect or pending on the
                  date hereof with respect to individuals with
                  comparable positions or responsibilities, grant any
                  severance or termination pay to, or enter into any
                  employment, termination or severance arrangement with,
                  any other employees; (ii) (A) amend in any material
                  respect any employment, termination or severance
                  arrangement with any Specified U.S. Healthcare Officer
                  or (B) except in the ordinary course, amend in any
                  material respect any employment, termination or
                  severance arrangement with any other directors,
                  officers or employees (it being understood that for
                  purposes of clauses (A) and (B) any increase or
                  acceleration of benefits under any such agreement
                  shall be deemed material); (iii) (x) establish, adopt,
                  enter into, or (y) except (I) the matters described in
                  the parenthetical clause of Section 3.11(c) hereof and
                  (II) the acceleration of vesting of U.S. Healthcare
                  Non-Employee Stock Options and restricted stock of
                  U.S. Healthcare issued to Persons who are not
                  employees of U.S. Healthcare, amend or take action to
                  accelerate or enhance any rights or benefits under,
                  (A) any plan providing for options, stock, performance
                  awards or other forms of incentive or deferred
                  compensation or (B) any collective bargaining, bonus,
                  profit sharing, thrift, compensation, restricted
                  stock, pension, retirement, deferred compensation,
                  employment, termination, severance or other plan,
                  agreement, trust, fund, policy or arrangement for the
                  benefit of any of its directors, officers or
                  employees; (iv) grant, confer or award any options,
                  stock, performance awards or other awards to acquire
                  any shares of its capital stock (other than an
                  aggregate of 150,000 options to acquire U.S.
                  Healthcare Stock and/or shares of restricted stock of
                  U.S. Healthcare pursuant to the terms existing on the
                  date hereof of U.S. Healthcare's plans to Persons
                  other than the Specified U.S. Healthcare Officers; (v)
                  increase the contribution percentages under U.S.
                  Healthcare's defined contribution plans; or (vi) (A)
                  other than an annual adjustment with respect to the
                  1997 calendar year if the Merger Date occurs after
                  December 31, 1996, which adjustment shall be of a
                  magnitude and character consistent with past practice,
                  increase the compensation or benefits of any Specified
                  U.S. Healthcare Officer or pay any benefit not
                  required by any plan or arrangement as in effect as of
                  the date hereof or (B) except in the ordinary course
                  of business consistent in magnitude and character with
                  past practice and in no event greater than 6% in the
                  aggregate on a per annum basis for all such
                  individuals as a group, increase the compensation or
                  benefits of any other employees or pay any benefit not
                  required by any plan or arrangement as in effect as of
                  the date hereof; provided that Aetna agrees it will
                  not unreasonably withhold its consent, if requested by
                  U.S. Healthcare, to transactions proposed under this
                  paragraph (j);

                       (k)  U.S. Healthcare will not, and will not
                  permit any of its Subsidiaries to, authorize,
                  recommend, propose or announce an intention to adopt a
                  plan of complete or partial liquidation or dissolution
                  of U.S. Healthcare or any Subsidiary of U.S.
                  Healthcare, or any plan of division or share exchange
                  involving U.S. Healthcare or any of its Subsidiaries;

                       (l)  U.S. Healthcare will not, and will not
                  permit any Subsidiary of U.S. Healthcare to, change
                  any method of accounting or any accounting principle
                  or practice used by U.S. Healthcare or any Subsidiary
                  of U.S. Healthcare, except for any such change
                  required by reason of a concurrent change in generally
                  accepted accounting principles or statutory accounting
                  principles;

                       (m)  except as previously disclosed to Aetna and
                  except for such contracts as would not be  material to
                  U.S. Healthcare and its Subsidiaries taken as a whole
                  or material to their operation in any Standard
                  Metropolitan Statistical Area, U.S. Healthcare will
                  not and will not permit any Subsidiary of U.S.
                  Healthcare to enter into any contract limiting the
                  right of U.S. Healthcare or any of its Subsidiaries at
                  any time on or after the date of this Agreement or
                  Aetna or any of its Subsidiaries or Affiliates at or
                  after the Merger Date, to engage in, or to compete
                  with any Person in, any business, including, without
                  limitation, any contract which includes exclusivity
                  provisions restricting the geographical area in which,
                  or the method by which, any such business may be
                  conducted by U.S. Healthcare or any of its
                  Subsidiaries or Affiliates, or by Aetna or any of its
                  Subsidiaries or Affiliates after the Merger Date;

                       (n)  subject (in the case of an acquisition) to
                  Section 5.1(b), U.S. Healthcare will not and will not
                  permit any of its Subsidiaries to enter into any
                  acquisition, joint venture, national vendor or
                  franchising agreement or arrangement which is material
                  to U.S. Healthcare and its Subsidiaries, taken as a
                  whole; 

                       (o) U.S. Healthcare will not, and will not permit
                  any of its Subsidiaries to, enter into any agreement
                  or arrangement with a third party on an exclusive
                  basis to offer or market any of the following services
                  of such third party:  group life, disability, managed
                  workers' compensation, long term care, dental,
                  behavioral or pharmacy benefits; and

                       (p)  U.S. Healthcare will not, and will not
                  permit any Subsidiary of U.S. Healthcare to, agree,
                  commit or adopt any plan or proposal to do any of the
                  foregoing.

                       SECTION 5.2.  Shareholder Meeting; Proxy
               Material.  (a)  U.S. Healthcare shall cause a meeting of
               its shareholders (the "U.S. HEALTHCARE SHAREHOLDER
               MEETING") to be duly called and held as soon as
               reasonably practicable for the purpose of voting on the
               approval and adoption of this Agreement and, to the
               extent submitted to U.S. Healthcare's shareholders for
               approval, the transactions contemplated by this
               Agreement, and the Board of Directors of U.S. Healthcare
               shall recommend approval and adoption of this Agreement
               and the U.S. Healthcare Sub Merger by U.S. Healthcare's
               shareholders; provided that such meeting need not be
               called and held and, prior to the U.S. Healthcare
               Shareholder Meeting, such recommendation may be
               withdrawn, modified or amended to the extent that, as a
               result of the commencement or receipt of an Acquisition
               Proposal with respect to U.S. Healthcare, the Board of
               Directors of U.S. Healthcare determines in good faith
               that it is necessary to so act in order to comply with
               its fiduciary duties under applicable law after
               consultation with independent counsel.  

                       (b)  In connection with the U.S. Healthcare
               Shareholder Meeting, and subject to the proviso to
               Section 5.2(a), U.S. Healthcare (i) will promptly prepare
               and file with the SEC, will use its best efforts to have
               cleared by the SEC and will thereafter mail to its
               shareholders as promptly as practicable the U.S.
               Healthcare Proxy Statement and all other proxy materials
               for such meeting, (ii) will use its best efforts to
               obtain the shareholder approvals referred to in Section
               5.2(a) and (iii) will otherwise comply with all legal
               requirements applicable to such meeting.

                       SECTION 5.3.  Access to Information.  To the
               extent permitted by applicable law, from the date hereof
               until the Merger Date, U.S. Healthcare will give (or
               cause to be given) Aetna, its counsel, financial
               advisors, auditors and other authorized representatives
               full access to the offices, properties, books and records
               of U.S. Healthcare and its Subsidiaries, will furnish (or
               cause to be furnished) to Aetna, its counsel, financial
               advisors, auditors and other authorized representatives
               such financial and operating data and other information
               as such Persons may reasonably request and will instruct
               the employees, counsel and financial advisors of U.S.
               Healthcare and its Subsidiaries to cooperate with Aetna
               in its investigation of the business of U.S. Healthcare
               and its Subsidiaries; provided that no investigation
               pursuant to this Section shall affect any representation
               or warranty given by U.S. Healthcare to Aetna hereunder.

                       SECTION 5.4.  Other Offers Relating to U.S.
               Healthcare.  From the date hereof until the termination
               of this Agreement, U.S. Healthcare will not, and will
               cause its Subsidiaries and the directors, officers,
               employees, financial advisors and other agents or
               representatives of U.S. Healthcare or any of its
               Subsidiaries not to, directly or indirectly, take any
               action to solicit, initiate or encourage any Acquisition
               Proposal with respect to U.S. Healthcare or engage in
               negotiations with, or disclose any nonpublic information
               relating to U.S. Healthcare or any Subsidiary of U.S.
               Healthcare or afford access to the properties, books or
               records of U.S. Healthcare or any Subsidiary of U.S.
               Healthcare to, any Person that may be considering making,
               or has made, an Acquisition Proposal with respect to U.S.
               Healthcare; provided that nothing contained in this
               Section 5.4 shall prevent U.S. Healthcare from furnishing
               non-public information to, or entering into discussions
               or negotiations with, any Person in connection with an
               unsolicited bona fide Acquisition Proposal with respect
               to U.S. Healthcare, if and only to the extent that
               (1) the Board of Directors of U.S. Healthcare determines
               in good faith after consultation with independent counsel
               that such action is necessary in order to comply with its
               fiduciary duties under applicable law and (2) prior to
               furnishing non-public information to, or entering into
               discussions or negotiations with, such Person, U.S.
               Healthcare receives from such Person an executed
               confidentiality agreement with terms no less favorable to
               U.S. Healthcare than those contained in the
               Confidentiality Agreement dated as of January 16, 1996
               between U.S. Healthcare and Aetna (the "CONFIDENTIALITY
               AGREEMENT").  U.S. Healthcare will promptly (and in no
               event later than 24 hours after receipt of the relevant
               Acquisition Proposal with respect to U.S. Healthcare),
               notify (which notice shall be provided orally and in
               writing and shall identify the Person making the relevant
               Acquisition Proposal with respect to U.S. Healthcare and
               set forth the material terms thereof) Aetna after receipt
               of any Acquisition Proposal with respect to U.S.
               Healthcare or any request for nonpublic information
               relating to U.S. Healthcare or any Subsidiary of U.S.
               Healthcare or for access to any properties, books or
               records of U.S. Healthcare or any Subsidiary of U.S.
               Healthcare by any Person that may be considering making,
               or has made, an Acquisition Proposal with respect to U.S.
               Healthcare and will keep Aetna fully informed of the
               status and details of any such Acquisition Proposal with
               respect to U.S. Healthcare.  U.S. Healthcare shall give
               Aetna at least one days' advance notice of any
               information to be supplied to, and at least three days'
               advance notice of any agreement to be entered into with,
               any Person making such Acquisition Proposal with respect
               to U.S. Healthcare.  U.S. Healthcare shall, and shall
               cause its Subsidiaries and the directors, officers,
               employees, financial advisors and other agents or
               representatives of U.S. Healthcare or any of its
               Subsidiaries to, cease immediately and cause to be
               terminated all activities, discussions or negotiations,
               if any, with any Persons conducted heretofore with
               respect to any Acquisition Proposal with respect to U.S.
               Healthcare.  For purposes of this Agreement, with respect
               to any Person, "ACQUISITION PROPOSAL" means any offer or
               proposal for, or any indication of interest in, (i) a
               merger or other business combination involving such
               Person or any Subsidiary of such Person or (ii) the
               acquisition in any manner of any significant equity
               interest in, or a substantial portion of the assets of,
               such Person or any Subsidiary of such Person, in each
               case other than the transactions contemplated by this
               Agreement.

                       SECTION 5.5.  Notices of Certain Events.  U.S.
               Healthcare shall promptly notify Aetna of:

                       (a)  any notice or other communication from any
                  Person alleging that the consent of such Person is or
                  may be required in connection with the transactions
                  contemplated by this Agreement;

                       (b)  any notice or other communication from any
                  governmental body, agency, official or authority in
                  connection with the transactions contemplated by this
                  Agreement; and

                       (c)  any actions, suits, claims, investigations,
                  proceedings or health or insurance related proceedings
                  or market conduct examinations or audits commenced or,
                  to the best of U.S. Healthcare's knowledge threatened
                  against, relating to or involving or otherwise
                  affecting U.S. Healthcare or any Subsidiary of U.S.
                  Healthcare which, if pending on the date of this
                  Agreement, would have been required to have been
                  disclosed pursuant to Section 3.13 or which relate to
                  the consummation of the transactions contemplated by
                  this Agreement.

                       SECTION 5.6.  Fiduciary Matters.  U.S. Healthcare
               shall, and shall direct the appropriate fiduciaries to,
               exercise all appropriate fiduciary responsibilities with
               respect to shares of U.S. Healthcare Stock held in any of
               its U.S. Healthcare Employee Plans.


                                       ARTICLE 6

                                   COVENANTS OF AETNA

                       Aetna agrees that:

                       SECTION 6.1.  Voting of U.S. Healthcare Stock. 
               Aetna agrees to vote or cause to be voted all shares of
               U.S. Healthcare Stock owned by it or any of its
               Subsidiaries in favor of the approval and adoption of
               this Agreement at the U.S. Healthcare Shareholder
               Meeting; provided that this Section 6.1 shall not impose
               any obligations in respect of shares of U.S. Healthcare
               Stock (i) held by Aetna or any Subsidiary of Aetna for
               the account of another Person, (ii) as to which Aetna or
               any Subsidiary or Affiliate of Aetna is or may be
               required to act as fiduciary or in a similar capacity or
               (iii) the voting of which pursuant to the provisions of
               this Section 6.1 would violate any legal duties or
               obligations of Aetna or any Subsidiary or Affiliate of
               Aetna.

                       SECTION 6.2.  Shareholder Meeting; Proxy
               Materials.  (a)  Aetna shall cause a special meeting of
               its shareholders (the "AETNA SHAREHOLDER MEETING") to be
               duly called and held as soon as reasonably practicable
               for the purpose of voting on the approval and adoption of
               this Agreement, and, to the extent submitted to Aetna's
               shareholders for approval, the transactions contemplated
               by this Agreement, and the Board of Directors of Aetna
               shall recommend approval and adoption of this Agreement
               by Aetna's shareholders; provided that such special
               meeting need not be called and held and, prior to the
               Aetna Shareholder Meeting, such recommendation may be
               withdrawn, modified or amended, to the extent that, as a
               result of the commencement or receipt of an Aetna
               Acquisition Proposal, the Board of Directors of Aetna
               determines in good faith that it is necessary to so act
               in order to comply with its fiduciary duties under
               applicable law after consultation with independent
               counsel. 

                       (b)  In connection with the Aetna Shareholder
               Meeting, and subject to the proviso to Section 6.2(a),
               Aetna (i) will promptly prepare and file with the SEC,
               will use its best efforts to have cleared by the SEC and
               will thereafter mail to its shareholders as promptly as
               practicable the Aetna Proxy Statement and all other proxy
               materials for such meeting, (ii) will use its best
               efforts to obtain the shareholder approvals referred to
               in Section 6.2(a), and (iii) will otherwise comply with
               all legal requirements applicable to such meeting.

                       SECTION 6.3.  Access to Information.  To the
               extent permitted by applicable law, from the date hereof
               until the Merger Date, Aetna will give (or cause to be
               given) U.S. Healthcare, its counsel, financial advisors,
               auditors and other authorized representatives full access
               to the offices, properties, books and records of Aetna
               and its Subsidiaries, will furnish (or cause to be
               furnished) to U.S. Healthcare, its counsel, financial
               advisors, auditors and other authorized representatives
               such financial and operating data and other information
               as such Persons may reasonably request and will instruct
               the employees, counsel and financial advisors of Aetna
               and its Subsidiaries to cooperate with U.S. Healthcare in
               its investigation of the business of Aetna and its
               Subsidiaries; provided that no investigation pursuant to
               this Section shall affect any representation or warranty
               given by Aetna to U.S. Healthcare hereunder.

                       SECTION 6.4.  Notices of Certain Events.   Aetna
               shall promptly notify U.S. Healthcare of:

                       (a)  any notice or other communication from any
                  Person alleging that the consent of such Person is or
                  may be required in connection with the transactions
                  contemplated by this Agreement;

                       (b)  any notice or other communication from any
                  governmental body, agency, official or authority in
                  connection with the transactions contemplated by this
                  Agreement; and

                       (c)  any actions, suits, claims, investigations,
                  proceedings or health or insurance related proceedings
                  or market conduct examinations commenced or, to the
                  best of Aetna's knowledge threatened against, relating
                  to or involving or otherwise affecting Aetna or any
                  Subsidiary of Aetna which relate to the consummation
                  of the transactions contemplated by this Agreement.

                       SECTION 6.5.  Certain Corporate Actions.  Prior
               to the Merger Date, except as contemplated by this
               Agreement or in Schedule 6.5, unless U.S. Healthcare has
               consented in writing thereto:

                       (a)  Aetna will not adopt or propose any change
                  in its certificate of incorporation or bylaws;

                       (b)  (i) Aetna will not, and will not permit any
                  Subsidiary of Aetna to, merge or consolidate with any
                  other Person (other than a merger or consolidation of
                  a Subsidiary of Aetna with a wholly-owned Subsidiary
                  of Aetna) and (ii) Aetna shall cause the Aetna Health
                  Operations not to acquire, whether by means of merger,
                  consolidation or otherwise, any business or assets,
                  other than acquisitions of products or services used
                  in the ordinary course operations of the business of
                  Aetna and its Subsidiaries in a manner consistent with
                  past practice and other acquisitions in an aggregate
                  amount not exceeding $75,000,000;

                       (c)  Aetna will not permit any Aetna Health
                  Operations to, sell, lease, license or otherwise
                  dispose of any material assets or property except in
                  the ordinary course of business pursuant to contracts
                  or commitments existing on the date hereof;

                       (d)  Aetna will not, and will not permit any
                  Subsidiary of Aetna to, declare, set aside or pay any
                  dividend (other than the payment of a regular
                  quarterly dividend on Aetna Common Stock in an amount
                  not exceeding $0.69 per share), or make any other
                  distribution, with respect to any shares of Aetna's
                  capital stock;

                       (e)  Aetna will not, and will not permit the
                  Aetna Health Operations to, create or assume any Lien
                  on any material asset other than in the ordinary
                  course consistent with past practices;

                       (f)  Aetna will not, and will not permit any
                  Subsidiary of Aetna to, issue, deliver or sell, or
                  authorize or propose the issuance, delivery or sale
                  of, any capital stock of Aetna or Aetna Subsidiary
                  Securities or any securities convertible into or
                  exchangeable for, or any rights, warrants or options
                  to acquire, any such securities of Aetna or any Aetna
                  Subsidiary Securities except (i) pursuant to contracts
                  and commitments existing on the date hereof, (ii) the
                  issuance of Aetna Stock pursuant to existing Aetna
                  stock plans or in connection with the exercise of
                  Aetna Stock Options, and (iii) any such securities
                  issued in one or a series of transactions at fair
                  market value which would not require the approval of
                  the shareholders of Aetna under the applicable NYSE
                  rules;

                       (g) except as disclosed in Schedule 6.5(g), (i)
                  Aetna will not split, combine or reclassify, or take
                  any other similar action with respect to, any capital
                  stock of Aetna, and (ii) Aetna will not, and will not
                  permit any Subsidiary of Aetna to, repurchase, redeem
                  or otherwise acquire an amount of shares of capital
                  stock of, or other ownership interests in, Aetna or
                  any Aetna Subsidiary Securities which repurchase,
                  redemption or other acquisition, individually or in
                  the aggregate, is material to Aetna and its
                  Subsidiaries taken as a whole;

                       (h)  except for borrowings or guarantees in the
                  ordinary course of business consistent with past
                  practice, Aetna will not permit any Aetna Health
                  Operation to incur or assume any indebtedness from any
                  third party for borrowed money or guarantee any such
                  indebtedness;

                       (i)  except for (i) loans, advances or capital
                  contributions to or investments in Subsidiaries of
                  Aetna, (ii) investments in securities consistent with
                  past practice or (iii) other loans, advances, capital
                  contributions or investments in an aggregate amount
                  not exceeding $25,000,000, Aetna will not permit any
                  Aetna Health Operation to, make any material loans,
                  advances or capital contributions to, or investments
                  in, any other Person;

                       (j)  Aetna will not, and will not permit any of
                  its Subsidiaries to, authorize, recommend, propose or
                  announce an intention to adopt a plan of complete or
                  partial liquidation or dissolution of Aetna or any
                  Subsidiary of Aetna, or any plan of division or share
                  exchange involving Aetna or any of its Subsidiaries;

                       (k)  Aetna will not, and will not permit any
                  Subsidiary of Aetna to, change any method of
                  accounting or any accounting principle or practice
                  used by Aetna or any Subsidiary of Aetna, except for
                  any such change required by reason of a concurrent
                  change in generally accepted accounting principles or
                  statutory accounting principles;

                       (l)  except as previously disclosed to U.S.
                  Healthcare and except for such contracts as would not
                  be material to Aetna or the Aetna Health Operation or
                  material to their operation in any Standard
                  Metropolitan Statistical Area, Aetna will not permit
                  any Aetna Health Operation to enter into any contract
                  limiting the right of any Aetna Health Operation at
                  any time on or after the date of this Agreement or
                  U.S. Healthcare or any of its Subsidiaries or
                  Affiliates at or after the Merger Date, to engage in,
                  or to compete with any Person in, any business,
                  including, without limitation, any contract which
                  includes exclusivity provisions restricting the
                  geographical area in which, or the method by which,
                  any such business may be conducted by Aetna or any of
                  its Subsidiaries or Affiliates, or by U.S. Healthcare
                  or any of its Subsidiaries or Affiliates after the
                  Merger Date;

                       (m)  Aetna will not permit any Aetna Health
                  Operation to enter into any acquisition, joint
                  venture, national vendor or franchising agreement or
                  arrangement which is material to Aetna and its
                  Subsidiaries, taken as a whole;

                       (n)  subject (in the case of an acquisition) to
                  Section 6.5(b), Aetna will not permit any Aetna Health
                  Operation to enter into any agreement or arrangement
                  with a third party on an exclusive basis to offer or
                  market any of the following services of such third
                  party:  group life, disability, managed workers'
                  compensation, long term care, dental, behavioral or
                  pharmacy benefits; and

                       (o)  Aetna will not, and will not permit any
                  Subsidiary of Aetna to, agree, commit or adopt any
                  plan or proposal to do any of the foregoing.

                       SECTION 6.6.  Other Offers Relating to Aetna. 
               From the date hereof until the termination hereof, Aetna
               will not, and will cause its Subsidiaries and the
               directors, officers, employees, financial advisors and
               other agents or representatives of Aetna or any of its
               Subsidiaries not to, directly or indirectly, take any
               action to solicit, initiate or encourage any Aetna
               Acquisition Proposal or engage in negotiations with, or
               disclose any nonpublic information relating to Aetna or
               any Subsidiary of Aetna or afford access to the
               properties, books or records of Aetna or any Subsidiary
               of Aetna to, any Person that may be considering making,
               or has made, an Aetna Acquisition Proposal; provided that
               nothing contained in this Section 6.6 shall prevent Aetna
               from furnishing non-public information to, or entering
               into discussions or negotiations with, any Person in
               connection with an unsolicited bona fide Aetna
               Acquisition Proposal, with respect to if and only to the
               extent that (1) the Board of Directors of Aetna
               determines in good faith after consultation with
               independent counsel that such action is necessary in
               order to comply with its fiduciary duties under
               applicable law and (2) prior to furnishing non-public
               information to, or entering into discussions or
               negotiations with, such Person, Aetna receives from such
               Person an executed confidentiality agreement with terms
               no less favorable to Aetna than those contained in the
               Confidentiality Agreement.  Aetna will promptly (and in
               no event later than 24 hours after receipt of the
               relevant Aetna Acquisition Proposal) notify (which notice
               shall be provided orally and in writing and shall
               identify the Person making the relevant Aetna Acquisition
               Proposal and set forth the material terms thereof) U.S.
               Healthcare after receipt of any Aetna Acquisition
               Proposal or any request for nonpublic information
               relating to Aetna or any Subsidiary of Aetna or for
               access to any properties, books or records of Aetna or
               any Subsidiary of Aetna by any Person that may be
               considering making, or has made, an  Aetna Acquisition
               Proposal and will keep U.S. Healthcare fully informed of
               the status and details of any such Aetna Acquisition
               Proposal.  Aetna shall give U.S. Healthcare at least one
               days' advance notice of any information to be supplied
               to, and at least three days' advance notice of any
               agreement to be entered into with, any Person making such
               Aetna Acquisition Proposal.  Aetna shall, and shall cause
               its Subsidiaries and the directors, officers, employees,
               financial advisors and other agents or representatives of
               Aetna or any of its Subsidiaries to, cease immediately
               and cause to be terminated all activities, discussions or
               negotiations, if any, with any Persons conducted
               heretofore with respect to any Aetna Acquisition
               Proposal.  For purposes of this Agreement, "AETNA
               ACQUISITION PROPOSAL" means any offer or proposal for, or
               any indication of interest in, (i) a merger or other
               business combination involving Aetna or any of the Aetna
               Health Operations or (ii) the acquisition in any manner
               of any significant equity interest in, or a substantial
               portion of the assets of, the Aetna Health Operations, in
               each case other than the transactions contemplated by
               this Agreement.

                       SECTION 6.7.  Amendment of the Stock Purchase
               Agreement.  Aetna agrees that it will not agree to any
               amendment, modification or waiver of the Stock Purchase
               Agreement which would have a Material Adverse Effect on
               Aetna or which would materially impair or adversely
               affect in a material respect the ability of Aetna to
               satisfy its obligations under this Agreement.

                       SECTION 6.8.  Dividends.  It is understood by
               U.S. Healthcare that the annual dividend to be paid in
               respect of Parent Common Stock (the "NEW ANNUAL
               DIVIDEND") will be an amount below the dividend currently
               paid in respect of Aetna Common Stock.  Initially after
               the Merger Date, subject to applicable law, the New
               Annual Dividend will not be less than $0.80 per share of
               Parent Common Stock. 

                                       ARTICLE 7

                                  COVENANTS OF AETNA,
                               U.S. HEALTHCARE AND PARENT

                       The parties hereto agree that:

                       SECTION 7.1.  Best Efforts.  Subject to the terms
               and conditions of this Agreement, each party will use its
               reasonable best efforts to take, or cause to be taken,
               all actions and to do, or cause to be done, all things
               necessary, proper or advisable under applicable laws and
               regulations to consummate the Mergers and the other
               transactions contemplated by this Agreement. 

                       SECTION 7.2.  Cooperation.  Without limiting the
               generality of Section 7.1, Aetna and U.S. Healthcare
               shall together, or pursuant to an allocation of
               responsibility to be agreed between them, coordinate and
               cooperate (i) with respect to the timing of the Aetna
               Shareholder Meeting and U.S. Healthcare Shareholder
               Meeting and shall use their reasonable best efforts to
               hold such meetings on the same day, (ii) in connection
               with the preparation of U.S. Healthcare Disclosure
               Documents, the Aetna Disclosure Documents and the Parent
               Disclosure Documents, (iii) in determining whether any
               action by or in respect of, or filing with, any
               governmental body, agency, official or authority is
               required, or any actions, consents, approvals or waivers
               are required to be obtained from parties to any material
               contracts, in connection with the consummation of the
               Mergers or the other transactions contemplated by this
               Agreement, (iv) in seeking any such actions, consents,
               approvals or waivers or making any such filings,
               furnishing information required in connection therewith
               or with the U.S. Healthcare Disclosure Documents, the
               Aetna Disclosure Documents and the Parent Disclosure
               Documents, and timely seeking to obtain any such actions,
               consents, approvals or waivers and (v) in diligently
               opposing any objections to, appeals from or other similar
               actions with respect to any such actions, consents,
               approvals or waivers.  Subject to the terms and
               conditions of this Agreement, Parent, Aetna and U.S.
               Healthcare will each use its reasonable best efforts to
               have the Form S-4 declared effective under the 1933 Act
               as promptly as practicable after the Form S-4 is filed. 

                       SECTION 7.3.  Public Announcements.  Aetna and
               U.S. Healthcare will (i) mutually agree on the text of
               any press release and (ii) consult with each other before
               making any other public statement with respect to this
               Agreement and the transactions contemplated by this
               Agreement, except, in each such case, as may be required
               by applicable law or any listing or similar agreement
               with any national securities exchange or the National
               Association of Securities Dealers Automated Quotation
               System.

                       SECTION 7.4.  Further Assurances.  At and after
               the Merger Date, the directors and officers of each of
               the surviving corporations in the Mergers will be
               authorized to execute and deliver, in the name and on
               behalf of (x) U.S. Healthcare or U.S. Healthcare Sub, and
               (y) Aetna or Aetna Sub, any deeds, bills of sale,
               assignments or assurances and to take and do, in the name
               and on behalf of (x) U.S. Healthcare or U.S. Healthcare
               Sub, and (y) Aetna or Aetna Sub, any other actions and
               things to vest, perfect or confirm of record or otherwise
               in such surviving corporation any and all right, title
               and interest in, to and under any of the rights,
               properties or assets of U.S. Healthcare or Aetna, as
               applicable, acquired or to be acquired by such surviving
               corporation as a result of, or in connection with, the
               Mergers.

                       SECTION 7.5.  Rule 145 Affiliates.  At least 40
               days prior to the Merger Date, each of U.S. Healthcare
               and Aetna (each of which is referred to for purposes of
               this Section 7.5 as a "SUBJECT COMPANY") shall cause to
               be delivered to Parent a letter identifying all Persons
               who are at the time of the Subject Company's Shareholder
               Meeting described in Section 5.2 or 6.2, as applicable,
               deemed to be "affiliates" of the Subject Company for
               purposes of Rule 145 under the 1933 Act (the "1933 ACT
               AFFILIATES").  Each Subject Company shall use its best
               efforts to cause each person who is identified as a 1933
               Act Affiliate to deliver to Parent at least 30 days prior
               to the Merger Date an agreement substantially in the form
               of Exhibit B-1 or B-2, as applicable, to this Agreement.

                       SECTION 7.6.  Director and Officer Liability. 
               (a)  From and after the Merger Date, Parent shall, and
               shall cause the U.S. Healthcare Surviving Corporation to,
               indemnify, defend and hold harmless any person who is on
               the date hereof, or has been at any time prior to the
               date hereof, or who becomes prior to the Merger Date, an
               officer, director, or employee or agent, and the
               Principal Shareholder (the "INDEMNIFIED PARTY") of U.S.
               Healthcare or any of its Subsidiaries against all losses,
               claims, damages, liabilities, costs and expenses
               (including attorney's fees and expenses), judgments,
               fines, losses, and amounts paid in settlement in
               connection with any actual or threatened action, suit,
               claim, proceeding or investigation (each a "CLAIM") to
               the extent that any such Claim is based on, or arises out
               of, (i) the fact that such person is or was a director,
               officer, employee or agent or the Principal Shareholder
               of U.S. Healthcare or any of its Subsidiaries at any time
               prior to the Merger Date or is or was serving at the
               request of U.S. Healthcare or any of its Subsidiaries as
               a director, officer, employee or agent of another
               corporation, partnership, joint venture, trust or other
               enterprise at any time prior to the Merger Date, or (ii)
               this Agreement, the Voting Agreement or any of the
               transactions contemplated hereby or thereby, or (iii)
               Claims relating to the facts specified in the
               consolidated lawsuit captioned J.H. Realty et. al. v.
               U.S. Healthcare (C.A. 95-CV-4176 and 95-CV-7180 (E.D.
               Pa.)) in each case to the extent that any such Claim
               pertains to any matter or fact arising, existing, or
               occurring prior to or at the Merger Date, regardless of
               whether such Claim is asserted or claimed prior to, at or
               after the Merger Date (the matters described in clauses
               (i), (ii) and (iii) the "PRE-MERGER MATTERS"), to the
               fullest extent indemnified under U.S. Healthcare's
               articles of incorporation, bylaws in effect as of the
               date hereof or indemnification agreements in effect at
               the date hereof, including provisions relating to
               advancement of expenses incurred in the defense of any
               action or suit; provided that, for purposes of the
               foregoing, the Principal Shareholder, in his capacity as
               such, shall be deemed to be a beneficiary of such
               indemnification provisions; and, provided further that
               such indemnification shall be subject to any limitation
               imposed from time to time under applicable laws.

                       (b)  Parent and the U.S. Healthcare Surviving
               Corporation agree that all rights to indemnification and
               all limitations or exculpation of liabilities existing in
               favor of the Indemnified Party as provided in U.S.
               Healthcare's articles of incorporation and bylaws as in
               effect as of the date hereof shall continue in full force
               and effect with respect to Pre-Merger Matters, without
               any amendment thereto, for a period of six years from the
               Merger Date to the extent such rights are consistent with
               Pennsylvania Law; provided that, in the event any Claim
               or Claims with respect to any such Pre-Merger Matters are
               asserted or made within such six year period, all rights
               to indemnification in respect of any such Claim or Claims
               shall continue until disposition of any and all such
               Claims; provided further, that any determination required
               to be made with respect to whether an Indemnified Party's
               conduct complies with the standards set forth under
               Pennsylvania Law, U.S. Healthcare's articles of
               incorporation or bylaws or such agreements, as the case
               may be, shall be made by independent legal counsel
               selected by the Indemnified Party and reasonably
               acceptable to Parent; and provided further, that nothing
               in this Section 7.6 shall impair any rights or
               obligations of any present or former directors or
               officers of U.S. Healthcare.

                       (c)  In the event Parent or the U.S. Healthcare
               Surviving Corporation or any of their successors or
               assigns (i) consolidates with or merges into any other
               Person and shall not be the continuing or surviving
               corporation or entity of such consolidation or merger, or
               (ii) transfers or conveys all or substantially all of its
               properties and assets to any Person, then, and in each
               such case, to the extent necessary to effectuate the
               purposes of this Section 7.6, proper provision shall be
               made so that the successors and assigns of Parent and
               U.S. Healthcare assume the obligations set forth in this
               Section 7.6 and none of the actions described in clause
               (i) or (ii) shall be taken until such provision is made.

                       (d)  Parent or the U.S. Healthcare Surviving
               Corporation shall maintain U.S. Healthcare's officers'
               and directors' liability insurance policy as of the
               Merger Date ("D&O INSURANCE") with respect to Pre-Merger
               Matters for a period of not less than six years after the
               Merger Date, provided, that Parent or the U.S. Healthcare
               Surviving Corporation may substitute therefor policies of
               substantially similar coverage and amounts containing
               terms no less advantageous to such former directors or
               officers; provided, further, if the existing D&O
               Insurance with respect to Pre-Merger Matters expires or
               is canceled during such period, Parent or the U.S.
               Healthcare Surviving Corporation will use their best
               efforts to obtain substantially similar D&O Insurance;
               and provided further that in satisfying its obligations
               under this Section, Parent shall not be obligated to pay
               premiums in excess of 150% of the premium for D&O
               Insurance paid by U.S. Healthcare as of the date hereof,
               which amount has previously been disclosed to Aetna.

                       (e)  The terms of Section 7.6(a) - 7.6(d) shall
               also apply, mutatis mutandis, to Aetna, and Parent shall
               have obligations with respect to Aetna corresponding to
               those of Parent with respect to U.S. Healthcare set forth
               in Section 7.6.

                       (f)  Notwithstanding anything to the contrary in
               Section 7.6(a), the obligations of Parent to indemnify
               the Principal Shareholder set forth in Section 7.6(a) in
               his capacity as such and not as a director or officer
               shall (i) take effect as of the date hereof, (ii) prior
               to the Merger Date, be the obligations of Aetna and (iii)
               be limited to Claims based on, or arising out of, this
               Agreement, the Voting Agreement or any of the
               transactions contemplated hereby or thereby involving the
               Principal Shareholder in his capacity as such.  Expenses
               that are subject to indemnification under this Section
               7.6 shall be advanced by Parent or Aetna, as applicable,
               and indemnification shall be paid in accordance with the
               procedures set forth in U.S. Healthcare's bylaws in
               effect as of the date hereof as the same have been
               modified pursuant to Section 7.6(b).

                       SECTION 7.7.  Subsidiary Agreements.  Parent
               shall cause the U.S. Healthcare Surviving Corporation to
               perform its obligations under the agreements described in
               Schedule 7.7 (the "SCHEDULED CONTRACTS") and the
               employment agreements with the Specified U.S. Healthcare
               Officers.  In addition, Parent shall not permit the U.S.
               Healthcare Surviving Corporation to terminate the
               Scheduled Contracts until 2004 absent a breach by any
               other party thereto.

                       SECTION 7.8.  Plans Following the Closing. 
               Through December 31, 1998, Parent will maintain employee
               plans and benefit arrangements for the benefit of U.S.
               Healthcare employees that are reasonably comparable in
               the aggregate to the U.S. Healthcare Employee Plans and
               U.S. Healthcare Benefit Arrangements.  Any changes shall
               be deemed reasonably comparable in the aggregate unless
               unanimously rejected by the two Co-Presidents of U.S.
               Healthcare in their reasonable good faith discretion.

                       SECTION 7.9.  Voting of Shares.  Aetna and U.S.
               Healthcare shall cause Parent to vote, whether by means
               of written consent or otherwise, all shares of capital
               stock of U.S. Healthcare Sub and Aetna Sub owned by
               Parent or any of its Subsidiaries in favor of the
               approval and adoption of this Agreement.

                       SECTION 7.10. Form S-4.  Subject to Sections 5.2
               and 6.2, Aetna and U.S. Healthcare shall cause Parent to
               promptly prepare and file with the SEC a registration
               statement on Form S-4 with respect to the Parent Common
               Stock and Parent Preferred Stock issuable in connection
               with the Mergers (the "FORM S-4") and to take any action
               required to be taken under applicable Blue Sky law in
               connection with such issuance of Parent Common Stock and
               Parent Preferred Stock.

                       SECTION 7.11. Certain Corporate Matters with
               Respect to Parent.  (a) Aetna and U.S. Healthcare shall
               cause Parent to take all necessary corporate action to
               amend the certificate of incorporation and bylaws of
               Parent prior to the Merger Date (x) to be in
               substantially the form of the certificate of
               incorporation and bylaws of Aetna in effect on the date
               hereof (modified (i) as may be appropriate to effect the
               transactions contemplated by this Agreement, (ii) as may
               be appropriate to reflect the fact that Parent is not an
               "insurance corporation", (iii) to change the par value of
               the Parent Common Stock from  $1.00 to $.01, (iv) to
               change the name of Parent to Aetna, Inc., (v) to increase
               the authorized capital stock of the Parent and (vi) as
               may be agreed by U.S. Healthcare and Aetna), and (y) to
               fix the designation, rights and preferences of the Parent
               Preferred Stock substantially in the form of Exhibit A
               hereto.   

                       (b) From and after the Merger Date, until
               successors are duly elected or appointed and qualified in
               accordance with applicable law, the Board of Directors of
               Parent shall consist of the Board of Directors of Aetna
               immediately prior to the Merger Date, and, no later than
               sixty days following the Merger Date, the Board of
               Directors of Parent shall be expanded to include Leonard
               Abramson (the "PRINCIPAL SHAREHOLDER"), and two other
               Persons designated by U.S. Healthcare (the Principal
               Shareholder and such Persons, the "U.S. HEALTHCARE
               DESIGNEES"), provided that such other Persons may elect
               to become members of the Board of Directors of Parent at
               any time during such sixty day period.  The U.S.
               Healthcare Designees shall be nominated by the Parent
               Board of Directors for election to the Parent Board of
               Directors for a period of no less than two consecutive
               years immediately following the Merger Date.  The Parent
               Board of Directors shall appoint the Principal
               Shareholder to any committee of the Parent Board of
               Directors that is constituted for the purpose of
               identifying and recommending a candidate to become Chief
               Executive Officer of Parent at such time as the current
               Chief Executive Officer of Parent retires.

                       (c)  From and after the Merger Date, all of the
               lines of business and operations of U.S. Healthcare
               (including but not limited to all HMO, POS, indemnity
               health insurance and other lines of business and
               operations) and all of the domestic (U.S.) lines of
               business and operations of Aetna Health Plans (including
               but not limited to all Health, Specialty Health and Group
               Insurance lines of business and operations) (hereinafter
               referred to collectively as "THE CONSOLIDATED HEALTH
               OPERATIONS") shall report to the two Co-Presidents of
               U.S. Healthcare as of the date hereof, who will then
               assume the positions of Co- Presidents of the
               Consolidated Health Operations (hereinafter referred to
               as the "CO-PRESIDENTS").  The Co-Presidents shall have
               their principal offices in Blue Bell, PA  or such other
               location as they shall determine, and shall report
               directly and exclusively to the Chief Executive Officer
               of Aetna.  Reporting directly and exclusively to the Co-
               Presidents shall be the individuals who serve as the
               Chief Financial Officer, Chief Medical Officer, Senior
               Sales Officer and Chief Legal Officer of U.S. Healthcare
               as of the date hereof, who will each assume similar
               positions and responsibilities for the Consolidated
               Health Operations as of the Merger Date except as may
               otherwise be mutually agreed between the Co-Presidents
               and any of the specific officers.  The Co-Presidents will
               also select and appoint those other senior officers who
               will be reporting directly to the Co-Presidents and
               responsible for other areas of responsibility for the
               Consolidated Health Operations (including but not limited
               to Group Insurance, Information Technology, Operations,
               Sales, National Accounts, Behavioral Health, Dental,
               Pharmacy, Health Education, and Human Resources),
               provided, however, that such appointments shall be made
               only in consultation with and with the approval of the
               Chief Executive Officer of Aetna.  The Co-Presidents will
               also serve as Co-Chairs of a transition group consisting
               of U.S. Healthcare and Aetna executives who will plan for
               and oversee the integration activities of the
               Consolidated Health Operations to occur on and after the
               Merger Date.  For a period of twenty-four (24) months
               from the Merger Date, no person employed by U.S.
               Healthcare as of the date hereof will be discharged with
               or without cause or have his or her compensation reduced
               or his or her principal office location changed absent
               the prior consent and approval of the Co-Presidents.  Any
               change or termination in the use of the U.S. Healthcare
               name or apple logo with respect to U.S. Healthcare
               products marketed as of the date hereof shall be as
               mutually agreed by the Chairman of Aetna and the Co-
               Presidents.  The provisions of this paragraph shall be
               subject to the terms of any employment agreements entered
               into by U.S. Healthcare with any of its employees as of
               the date hereof or with the Specified U.S. Healthcare
               Officers as contemplated by this Agreement.

                       (d) Each of U.S. Healthcare and Aetna shall cause
               Parent to take all necessary corporate action for the
               establishment of the Parent stock option plan
               contemplated by Sections 1.7 and 1.8 hereof and agrees to
               vote the shares of capital stock of Parent owned by it in
               favor of the adoption of such plan as required under the
               laws of the State of Connecticut.

                       (e) From the date hereof until the Merger Date,
               Aetna and U.S. Healthcare shall cause Parent (x) not to
               take any action inconsistent with the provisions of this
               Agreement and (y) not to conduct business or activity
               other than in connection with this Agreement.

                       SECTION 7.12. Governmental Authorization.  Aetna
               and U.S. Healthcare shall cause Parent to take all
               actions by or in respect of, or filing with, any
               governmental body, agency, official or authority required
               for the execution, delivery and performance by Parent of
               this Agreement and the consummation by Parent of the
               transactions contemplated by this Agreement, including
               (a) compliance with any applicable requirements of the
               HSR Act; (b) compliance with any applicable requirements
               of the 1934 Act; (c) compliance with any applicable
               requirements of the 1933 Act; (d) compliance with any
               applicable foreign or state securities or Blue Sky laws;
               (e) approvals or filings required under laws, rules and
               regulations governing insurance and insurance companies,
               health maintenance organizations, health care services
               plans, third party administrators or other managed health
               care organizations; and (f) the filing with the Secretary
               of the State and, if required, the Insurance Commissioner
               of the State of Connecticut of an amendment to the
               Parent's certificate of incorporation to reflect the
               matters contemplated by Section 7.11.

                       SECTION 7.13. Disclosure Documents.   Aetna and
               U.S. Healthcare shall cause each document required to be
               filed by Parent with the SEC in connection with the
               transactions contemplated by this Agreement (the "PARENT
               DISCLOSURE DOCUMENTS"), including, without limitation,
               the Form S-4, if any, to be filed with the SEC in
               connection with the Mergers, and any amendments or
               supplements thereto, to, when filed, comply as to form in
               all material respects with the applicable requirements of
               the 1934 Act.

                       SECTION 7.14. Listing of Stock.    Each of Aetna
               and U.S. Healthcare shall, subject to the terms of this
               Agreement, use its reasonable best efforts to make
               application to the NYSE or such other stock exchanges as
               shall be agreed for the listing of the Parent Common
               Stock and Parent Preferred Stock and to list such stock
               on the NYSE or such other exchanges.

                                       ARTICLE 8

                               CONDITIONS TO THE MERGERS

                       SECTION 8.1.  Conditions to the Obligations of
               Each Party.  The obligations of U.S. Healthcare to
               consummate the U.S. Healthcare Sub Merger and of Aetna to
               consummate the Aetna Sub Merger are subject to the
               satisfaction (or waiver by the party for whose benefit
               such conditions exist) of the following conditions:

                       (a)  this Agreement and the transactions
                  contemplated by this Agreement shall have been
                  approved and adopted by the shareholders of U.S.
                  Healthcare in accordance with the laws of the
                  Commonwealth of Pennsylvania;

                       (b) this Agreement and the transactions
                  contemplated by this Agreement shall have been
                  approved and adopted by the shareholders of Aetna in
                  accordance with the laws of the State of Connecticut;

                       (c)  any applicable waiting period under the HSR
                  Act relating to the transactions contemplated by this
                  Agreement shall have expired;

                       (d)  no provision of any applicable law or
                  regulation and no judgment, injunction, order or
                  decree of a court of competent jurisdiction shall
                  prohibit the consummation of either of the Mergers;

                       (e)  the Form S-4 shall have been declared
                  effective under the 1933 Act and no stop order
                  suspending the effectiveness of the Form S-4 shall be
                  in effect and no proceedings for such purpose shall be
                  pending before or threatened by the SEC;

                       (f) (i)  U.S. Healthcare shall have received an
                  opinion of Skadden, Arps, Slate, Meagher & Flom in
                  form and substance reasonably satisfactory to U.S.
                  Healthcare, and (ii) Aetna shall have received an
                  opinion of Davis Polk & Wardwell in form and substance
                  satisfactory to Aetna, in each case on the basis of
                  certain facts, representations and assumptions set
                  forth in such opinion which are consistent with the
                  state of facts existing on the Merger Date, to the
                  effect that neither it nor any of its shareholders
                  shall recognize gain or loss for U.S. Federal income
                  tax purposes as a result of the Merger to which it is
                  a party (other than in respect of (x) the Cash
                  Consideration or (y) any cash paid in lieu of
                  fractional shares).  In rendering the opinions
                  described in the preceding sentence, such counsel may
                  require and rely upon representations contained in
                  certificates of officers of Parent, U.S. Healthcare,
                  Aetna and their respective Subsidiaries;

                       (g)  the shares of Parent Common Stock and Parent
                  Preferred Stock issuable in the Mergers shall have
                  been approved for listing on the NYSE upon official
                  notice of issuance or such other stock exchanges as
                  shall be agreed; 

                       (h)  all actions by or in respect of or filings
                  with any governmental body, agency, official or
                  authority required to permit the consummation of the
                  U.S. Healthcare Sub Merger and the Aetna Sub Merger
                  including, without limitation, any approvals or
                  filings required under federal or state laws, rules
                  and regulations governing insurance and insurance
                  companies, health maintenance organizations, health
                  care services plans, third party administrators or
                  other managed health care organizations, or any
                  actions or filings pursuant to the New Jersey
                  Industrial Site Recovery Act shall have been made or
                  obtained; and

                       (i)  the transaction contemplated by the Stock
                  Purchase Agreement dated as of November 28, 1995
                  between The Travelers Insurance Group Inc. and Aetna
                  (the "STOCK PURCHASE AGREEMENT") relating to the
                  purchase and sale of 100% of the Common Stock of The
                  Aetna Casualty and Surety Company and The Standard
                  Fire Insurance Company shall have been consummated.

                       SECTION 8.2.  Conditions to the Obligations of
               Aetna.  The obligations of Aetna to consummate the Aetna
               Sub Merger are subject to the satisfaction (or waiver by
               Aetna) of the following further conditions:

                       (a) (i) U.S. Healthcare shall have performed in
                  all material respects all of its obligations hereunder
                  required to be performed by it at or prior to the
                  Merger Date, (ii) the representations and warranties
                  of U.S. Healthcare contained in this Agreement shall
                  be true at and as of the Merger Date, as if made at
                  and as of the Merger Date (without giving effect to
                  any materiality or Material Adverse Effect
                  qualifications or materiality exceptions contained
                  therein); provided that the condition set forth in
                  clause (ii) shall be deemed satisfied if any
                  inaccuracies in any such representations and
                  warranties at and as of the Merger Date (without
                  giving effect to any materiality or Material Adverse
                  Effect qualifications or materiality exceptions
                  contained therein) would not, individually or in the
                  aggregate, have or reasonably be expected to have a
                  Material Adverse Effect on U.S. Healthcare; and Aetna
                  shall have received a certificate signed by an
                  executive officer of U.S. Healthcare to the effect set
                  forth in clauses (i) and (ii) (after giving effect to
                  the proviso therein); and

                       (b)  At least twelve of the Persons listed on
                  Schedule 8.2(b) shall have entered into employment
                  agreements with U.S. Healthcare substantially in the
                  form of Schedule 3.11(j)(A) hereto.

                       SECTION 8.3.  Conditions to the Obligations of
               U.S. Healthcare.  The obligations of U.S. Healthcare to
               consummate the U.S. Healthcare Sub Merger are subject to
               the satisfaction (or waiver by U.S. Healthcare) of the
               following further conditions:

                       (a)  (i)  Aetna shall have performed in all
                  material respects all of its obligations hereunder
                  required to be performed by it at or prior to the
                  Merger Date, (ii) the representations and warranties
                  of Aetna contained in this Agreement shall be true at
                  and as of the Merger Date, as if made at and as of the
                  Merger Date (without giving effect to any materiality
                  or Material Adverse Effect qualifications or
                  materiality exceptions contained therein); provided
                  that the condition set forth in clause (ii) shall be
                  deemed satisfied if any inaccuracies in any such
                  representations and warranties at and as of the Merger
                  Date (without giving effect to any materiality or
                  Material Adverse Effect qualifications or materiality
                  exceptions contained therein) would not, individually
                  or in the aggregate, have or reasonably be expected to
                  have a Material Adverse Effect on Aetna; and U.S.
                  Healthcare shall have received a certificate signed by
                  an executive officer of Aetna to the effect set forth
                  in clauses (i) and (ii) hereof (after giving effect to
                  the proviso therein); and 

                       (b)  the average of the closing prices per share
                  of the Aetna Common Stock on the NYSE Composite Tape
                  for the 20 consecutive trading days immediately prior
                  to the proposed Merger Date (the "AVERAGE CLOSING
                  STOCK PRICE") is not less than $60.90, provided that
                  this condition shall be deemed to be satisfied
                  notwithstanding the fact that the Average Closing
                  Stock Price is less than $60.90 if Aetna, in its sole
                  discretion, agrees to increase that portion of the
                  Merger Consideration payable in respect of each share
                  of U.S. Healthcare Stock by an amount in cash equal to
                  (A) the difference between (I) a fraction, the
                  numerator of which is $60.90 and the denominator of
                  which is the Average Closing Stock Price and (II) 1,
                  and multiplying such difference by (B) the product of
                  (y) 0.2995 and (z) the Average Closing Stock Price. 


                                       ARTICLE 9

                                      TERMINATION

                       SECTION 9.1.  Termination.  This Agreement may be
               terminated and the Mergers may be abandoned at any time
               prior to the Merger Date (notwithstanding any approval of
               this Agreement by the shareholders of U.S. Healthcare or
               Aetna):

                       (a)  by mutual written consent of U.S. Healthcare
                  and Aetna;

                       (b)  by either U.S. Healthcare or Aetna, if the
                  Merger has not been consummated by the date twelve
                  months following the date of this Agreement;

                       (c)  by either U.S. Healthcare or Aetna, if there
                  shall be any law or regulation that makes consummation
                  of either of the Mergers illegal or otherwise
                  prohibited or if any judgment, injunction, order or
                  decree enjoining Aetna or U.S. Healthcare from
                  consummating their respective Mergers is entered and
                  such judgment, injunction, order or decree shall
                  become final and nonappealable;

                       (d)  by Aetna, in the event of any breach by the
                  Principal Shareholder of any obligations under the
                  Voting Agreement dated as of the date hereof (the
                  "VOTING AGREEMENT") among the Principal Shareholder,
                  Aetna Life Insurance and Annuity Company and Aetna
                  Life Insurance Company;

                       (e)  (i) by U.S. Healthcare, if the approvals of
                  the shareholders of Aetna contemplated by this
                  Agreement shall not have been obtained by reason of
                  the failure to obtain the required vote at a duly held
                  meeting of shareholders or any adjournment thereof or
                  (ii) by Aetna, if the approvals of the shareholders of
                  U.S. Healthcare contemplated by this Agreement shall
                  not have been obtained by reason of the failure to
                  obtain the required vote at a duly held meeting of
                  shareholders or any adjournment thereof;

                       (f)  by Aetna, if, (i) the Board of Directors of
                  U.S. Healthcare determines not to call or hold the
                  U.S. Healthcare Shareholder Meeting or (ii) prior to
                  the U.S. Healthcare Shareholder Meeting, the Board of
                  Directors of U.S. Healthcare shall have withdrawn,
                  modified or changed in a manner adverse to Aetna its
                  approval or recommendation of this Agreement or the
                  U.S. Healthcare Sub Merger;

                       (g)  by U.S. Healthcare, if, (i) the Board of
                  Directors of Aetna determines not to call or hold the
                  Aetna Shareholder Meeting or (ii) prior to the Aetna
                  Shareholder Meeting, the Board of Directors of Aetna
                  shall have withdrawn, modified or changed in a manner
                  adverse to U.S. Healthcare its approval or
                  recommendation of this Agreement or the Aetna Sub
                  Merger;

                       (h)  by Aetna, upon a breach of any
                  representation, warranty, covenant or agreement of
                  U.S. Healthcare, or if any representation or warranty
                  of U.S. Healthcare shall become untrue, in either case
                  such that the conditions set forth in Section 8.2(a)
                  would be incapable of being satisfied by the first
                  anniversary of the date hereof (or as otherwise
                  extended); 

                       (i)  by U.S. Healthcare, upon a breach of any
                  representation, warranty, covenant or agreement of
                  Aetna, or if any representation or warranty of Aetna
                  shall become untrue, in either case such that the
                  conditions set forth in Section 8.3(a) would be
                  incapable of being satisfied by the first anniversary
                  of the date hereof (or as otherwise extended); 

                       (j)  by U.S. Healthcare, upon payment to Aetna of
                  the amounts referred to in Section 10.4(b), if prior
                  to the U.S. Healthcare Shareholder Meeting, the Board
                  of Directors of U.S. Healthcare shall have withdrawn
                  or modified in a manner adverse to Aetna its approval
                  or recommendation of this Agreement or the U.S.
                  Healthcare Sub Merger in order to permit U.S.
                  Healthcare to execute a definitive agreement in
                  connection with an Acquisition Proposal with respect
                  to U.S. Healthcare which the Board of Directors of
                  U.S. Healthcare determines in good faith (based on the
                  presentation of an investment banking firm of national
                  reputation) to be more favorable to U.S. Healthcare's
                  shareholders than the U.S. Healthcare Sub Merger; and

                       (k)  by U.S. Healthcare, if the Stock Purchase
                  Agreement is terminated in accordance with its terms.

               The party desiring to terminate this Agreement pursuant
               to this Section 9.1 shall give written notice of such
               termination to the other party in accordance with Section
               10.1.

                       SECTION 9.2.  Effect of Termination.  If this
               Agreement is terminated pursuant to Section 9.1, this
               Agreement shall become void and of no effect with no
               liability on the part of any party hereto, except that
               (a) the agreements contained in this Section 9.2 and in
               Section 10.4 shall survive the termination hereof and
               (b) no such termination shall relieve any party of any
               liability or damages resulting from any breach by that
               party of this Agreement.

                                       ARTICLE 10

                                     MISCELLANEOUS

                       SECTION 10.1.  Notices.  Except as provided in
               Section 5.4, all notices, requests and other
               communications to any party hereunder shall be in writing
               (including telecopy or similar writing) and shall be
               given,

                       if to Aetna, to:

                                   Aetna Life and Casualty Company
                                   151 Farmington Avenue
                                   Hartford, CT 06156-7505
                                   Fax: 860-549-6755
                                   Attention:  Richard L. Huber
                                               Vice Chairman

                            with a copy to:  

                                   Davis Polk & Wardwell
                                   450 Lexington Avenue
                                   New York, New York  10017
                                   Fax: (212) 450-4800
                                   Attention:  Lewis B. Kaden

                       if to U.S. Healthcare, to:

                                   U.S. Healthcare, Inc.
                                   780 Jolly Road
                                   P.O. Box 1109
                                   Blue Bell, PA 19422
                                   Fax:  215-283-6401
                                   Attention:  David Simon

                            with a copy to:  

                                   Skadden, Arps, Slate, Meagher & Flom
                                   919 Third Avenue
                                   New York, New York  10022
                                   Fax: (212) 735-2000
                                   Attention:  Stephen M. Banker

                       if to Parent, to:

                                   each of the addresses set forth above

               or such other address or telecopy number as such party
               may hereafter specify for the purpose by notice to the
               other parties hereto.  Each such notice, request or other
               communication shall be effective (a) if given by
               telecopy, when such telecopy is transmitted to the
               telecopy number specified in this Section and the
               appropriate telecopy confirmation is received or (b) if
               given by any other means, when delivered at the address
               specified in this Section.

                       SECTION 10.2.  Entire Agreement; Survival of
               Representations and Warranties.  (a)  This Agreement
               (including the Exhibits hereto), the other agreements
               referred to in this Agreement and the Confidentiality
               Agreement constitute the entire agreement among the
               parties with respect to the subject matter hereof and
               thereof and supersede all prior agreements,
               understandings and negotiations, both written and oral,
               between the parties with respect to such subject matter. 
               None of this Agreement, the Confidentiality Agreement or
               any other agreement contemplated hereby or thereby (or
               any provision hereof or thereof) is intended to confer on
               any Person other than the parties hereto or thereto any
               rights or remedies (except that Sections 7.6 and 7.7 are
               intended to confer rights and remedies on the Persons
               specified therein, Sections 7.8 and 7.11(c) are intended
               to confer rights and remedies on the Co-Presidents and
               Section 7.11(b) is intended to confer rights and remedies
               on the Principal Shareholder).

                       (b)  The representations and warranties contained
               herein shall not survive the Merger Date.

                       SECTION 10.3.  Amendments; No Waivers.  (a)  Any
               provision of this Agreement may be amended or waived
               prior to the Merger Date if, and only if, such amendment
               or waiver is in writing and signed, in the case of an
               amendment, by U.S. Healthcare, Aetna and Parent or, in
               the case of a waiver, by the party against whom the
               waiver is to be effective; provided that after the
               adoption of this Agreement by the shareholders of (i)
               U.S. Healthcare, no such amendment or waiver shall,
               without the further approval of such shareholders, alter
               or change (A) the amount or kind of consideration to be
               received in exchange for any shares of capital stock of
               U.S. Healthcare, or (B) any of the terms or conditions of
               this Agreement if such alteration or change would
               adversely affect the holders of any shares of capital
               stock of U.S. Healthcare and (ii) Aetna, no such
               amendment or waiver shall, without the further approval
               of such shareholders, alter or change (A) the amount or
               kind of consideration to be received in exchange for any
               shares of capital stock of Aetna or (B) any of the terms
               or conditions of this Agreement if such alteration or
               change would adversely affect the holders of any shares
               of capital stock of Aetna.

                       (b)  No failure or delay by any party in
               exercising any right, power or privilege hereunder shall
               operate as a waiver thereof nor shall any single or
               partial exercise thereof preclude any other or further
               exercise thereof or the exercise of any other right,
               power or privilege.  The rights and remedies herein
               provided shall be cumulative and not exclusive of any
               rights or remedies provided by law.

                       SECTION 10.4.  Expenses.  (a)  Except as
               otherwise specified in this Section 10.4 or agreed in
               writing by the parties, all costs and expenses incurred
               in connection with this Agreement and the transactions
               contemplated by this Agreement shall be paid by the party
               incurring such cost or expense.

                       (b)  U.S. Healthcare agrees that if this
               Agreement shall be terminated pursuant to Section
               9.1(e)(ii), (f), or (j), it will pay Aetna an amount
               equal to $100,000,000 plus all out-of-pocket expenses,
               not to exceed $25,000,000, incurred by Aetna in
               connection with this Agreement, the Mergers and all
               related transactions by wire transfer of immediately
               available funds promptly, but in no event later than two
               business days, after such termination; provided that no
               payment will be required pursuant to this Section 10.4(b)
               if this Agreement is terminated pursuant to Section
               9.1(e)(ii) unless, after the date hereof, U.S. Healthcare
               shall have received, or there shall have been commenced,
               an Acquisition Proposal with respect to U.S. Healthcare.

                       (c)  U.S. Healthcare agrees that if this
               Agreement shall be terminated pursuant to Section
               9.1(e)(ii) and no payment is required by it pursuant to
               Section 10.4(b), it will reimburse Aetna for all out-of-
               pocket expenses (not to exceed $25,000,000) incurred by
               Aetna in connection with this Agreement, the Merger and
               all related transactions.  Such payment shall be made by
               wire transfer of immediately available funds promptly,
               but in no event later than two business days, after such
               termination.

                       (d)  Aetna agrees that if this Agreement shall be
               terminated (i) pursuant to Section 9.1(e)(i), (g) or (k),
               or (ii) pursuant to Section 9.1(b) and (A) the condition
               set forth in Section 8.1(i) has not been satisfied or
               waived by Aetna and (B) all other conditions set forth in
               Section 8.1 and 8.2 have theretofore been, or are then
               capable of being satisfied, it will pay U.S. Healthcare
               an amount equal to $100,000,000 plus all out-of-pocket
               expenses, not to exceed $25,000,000, incurred by U.S.
               Healthcare in connection with this Agreement, the Mergers
               and all related transactions by wire transfer of
               immediately available funds promptly, but in no event
               later than two business days, after such termination;
               provided that no payment will be required pursuant to
               this Section 10.4(d) if this Agreement is terminated
               pursuant to Section 9.1(e)(i) unless, after the date
               hereof, Aetna shall have received, or there shall have
               been commenced, an Aetna Acquisition Proposal.

                       (e)  Aetna agrees that if this Agreement shall be
               terminated pursuant to Section 9.1(e)(i) and no payment
               is required by it pursuant to Section 10.4(d), it will
               reimburse U.S. Healthcare for all out-of-pocket expenses
               (not to exceed $25,000,000) incurred by U.S. Healthcare
               in connection with this Agreement, the Mergers and all
               related transactions.  Such payment shall be made by wire
               transfer of immediately available funds promptly, but in
               no event later than two business days, after receipt by
               Aetna of a written notice given by U.S. Healthcare
               setting forth the amount of such expenses.

                       SECTION 10.5.  Successors and Assigns.  The
               provisions of this Agreement shall be binding upon and
               inure to the benefit of the parties hereto and their
               respective successors and assigns; provided that no party
               may assign, delegate or otherwise transfer any of its
               rights or obligations under this Agreement without the
               consent of the other parties hereto; provided further
               that Aetna may assign its rights, but not its
               obligations, under this Agreement to a wholly-owned
               subsidiary of Aetna.

                       SECTION 10.6.  Governing Law.  This Agreement
               shall be construed in accordance with and governed by the
               law of the State of New York (without regard to
               principles of conflict of laws).

                       SECTION 10.7.  Jurisdiction.  Any suit, action or
               proceeding seeking to enforce any provision of, or based
               on any matter arising out of or in connection with, this
               Agreement or the transactions contemplated by this
               Agreement may be brought against any of the parties in
               the United States District Court for the Southern
               District of New York or any state court sitting in the
               City of New York, Borough of Manhattan, and each of the
               parties hereto hereby consents to the exclusive
               jurisdiction of such courts (and of the appropriate
               appellate courts) in any such suit, action or proceeding
               and waives any objection to venue laid therein.  Process
               in any such suit, action or proceeding may be served on
               any party anywhere in the world, whether within or
               without the State of New York.  Without limiting the
               generality of the foregoing, each party hereto agrees
               that service of process upon such party at the address
               referred to in Section 10.1, together with written notice
               of such service to such party, shall be deemed effective
               service of process upon such party.

                       SECTION 10.8.  Counterparts; Effectiveness.  This
               Agreement may be signed in any number of counterparts,
               each of which shall be an original, with the same effect
               as if the signatures thereto and hereto were upon the
               same instrument.  This Agreement shall become effective
               when each party hereto shall have received counterparts
               hereof signed by all of the other parties hereto.


                       IN WITNESS WHEREOF, the parties hereto have
               caused this Agreement to be duly executed by their respective
               authorized officers as of the day and year first above
               written.

                                 AETNA LIFE AND CASUALTY COMPANY

                                 By /s/ Ronald Compton          
                                   Name:  Ronald Compton
                                   Title: Chairman and Chief Executive Officer

                                 U.S. HEALTHCARE, INC.

                                 By /s/ Joseph T. Sebastianelli  
                                   Name:  Joseph T. Sebastianelli
                                   Title: Co-President

                                 BUTTERFLY, INC.

                                 By /s/ Richard Huber            
                                   Name:  Richard Huber
                                   Title: Vice President

                                 ANTELOPE SUB, INC.

                                 By /s/ Richard Huber            
                                   Name:  Richard Huber
                                   Title: Vice President

                                 NEW MERGER CORPORATION

                                 By /s/ James Dickerson          
                                   Name:  James Dickerson
                                   Title: President





                                                          EXHIBIT A

                                   FORM OF

                   DESIGNATIONS, RIGHTS AND PREFERENCES OF
                   6.25% CLASS C NON-VOTING PREFERRED STOCK

                    The terms, limitations and relating rights and
          preferences of shares of the Corporation's Class C Non-
          Voting Preferred Stock without par value to be designated
          as 6.25% PACS, Class C Non-Voting Preferred Stock are
          hereby fixed as follows:

                    SECTION 1.     DESIGNATION AND AMOUNT.

                    The designation of the series of Class C Non-
          Voting Preferred Stock created by this Article ___ shall
          be "6.25% PACS, Class C Non-Voting Preferred Stock" (the
          "PACS").  The authorized number of shares constituting
          the PACS shall be ________ shares.  

                    SECTION 2.     DIVIDENDS. 

                    (a)  The holders of outstanding shares of PACS
          shall be entitled to receive, when, as and if declared by
          the Board of Directors of the Corporation, out of funds
          legally available therefor, cumulative preferential
          dividends from [closing date], 1996, at the rate per
          share of $4.7578 per annum,* in cash payable quarterly in
          equal amounts (other than with respect to the initial
          dividend period) on _______________, ________________,
          ________________, and ____________ of each year (each
          such date being hereinafter referred to as a "DIVIDEND
          PAYMENT DATE"), or, if any Dividend Payment Date is not a
          business day, then the Dividend Payment Date shall be the
          next succeeding business day; provided, however, that
          with respect to any dividend period during which a
          redemption occurs, the Corporation may, at its option,
          declare accrued dividends to, and pay such dividends on,
          the redemption date, in which case such dividends would
          be payable on the redemption date in cash to the holders
          of the shares of PACS as of the record date for such
          dividend payment and such accrued dividends would not be
          included in the calculation of the related Call Price (as
          hereinafter defined).  Each dividend on the shares of
          PACS shall be payable to holders of record as they appear
          on the stock register of the Corporation on such record
          date, not less than 10 nor more than 70 days preceding
          the payment dates thereof, as shall be fixed by the Board
          of Directors of the Corporation.  The first dividend
          payment shall be for the period from [closing date], 1996
          to ________, 1996 and the first dividend will be payable
          on _________, 1996.  Dividends (or amounts equal to

                              
               *If the annual dividend for the Aetna Common Stock
          at the Merger Date is set at a level above $0.83 per
          share, the annual PACS dividend will be determined as
          follows:  $4.7578 + [(annual dividend per share on Aetna
          Common Stock - $0.83) x 0.8197]
          accrued and unpaid dividends) payable on shares of PACS
          for any period less than a full quarterly dividend period
          will be computed on the basis of a 360-day year of twelve
          30-day months and the actual number of days elapsed in
          any period less than one month.  

                    Dividends on the shares of PACS will accrue on
          a daily basis beginning on the date immediately following
          a Dividend Payment Date (except that, with respect to the
          initial Dividend Payment Date, dividends on the shares of
          PACS will accrue beginning on [closing date], 1996)
          whether or not there are funds legally available for the
          payment of such dividends and whether or not such
          dividends are declared.  Accumulated unpaid dividends
          shall not bear interest.  Dividends will cease to accrue
          in respect of shares of PACS on the Mandatory Conversion
          Date (as hereinafter defined) or on the date of their
          earlier conversion or redemption.

                    (b)  So long as any shares of PACS are
          outstanding, no dividends or other distributions (other
          than dividends payable in Junior Securities (as defined
          below) or warrants, rights or options exercisable for or
          convertible into Junior Securities, together with cash in
          lieu of fractional shares of Junior Securities or
          fractional interests in any such warrants, rights or
          options), and no redemption, purchase or other
          acquisition for value (other than redemptions, purchases
          or acquisitions payable in Junior Securities or warrants,
          rights or options exercisable for or convertible into
          Junior Securities, together with cash in lieu of
          fractional shares of Junior Securities or fractional
          interests in any such warrants, rights or options), shall
          be paid or made, as the case may be, with respect to, nor
          may any funds be set aside or made available for any
          sinking fund for the purchase or redemption of, (a) the
          Common Capital Stock ____ par value of the Corporation
          ("COMMON STOCK") or any other class or series of the
          Corporation's capital stock ranking junior to the PACS
          with respect to dividends or liquidation preferences
          (such capital stock, including the Common Stock,
          collectively "JUNIOR SECURITIES") or (b) Parity Preferred
          Stock (as defined below) until cumulative dividends on
          the PACS and Parity Preferred Stock in the full amounts
          owing for all dividend periods ending, and all amounts
          payable upon redemption or conversion of PACS and Parity
          Preferred Stock, on or prior to the date on which the
          proposed dividend or distribution is paid, or the
          proposed redemption, purchase or other acquisition is
          effected, have been, in the case of dividends, declared
          and, in all cases, paid or set apart for payment.

                    (c)  If any dividends are not paid or set apart
          in full, as aforesaid, with respect to shares of PACS and
          any Parity Preferred Stock, all dividends declared with
          respect to shares of PACS and any Parity Preferred Stock
          shall be declared pro rata based on the number of shares
          so that the amount of dividends declared per share on
          shares of PACS and such Parity Preferred Stock shall in
          all cases bear to each other the same ratio that accrued
          dividends per share on shares of PACS and such Parity
          Preferred Stock bear to each other.  Holders of the
          shares of PACS shall not be entitled to any dividends,
          whether payable in cash, property or stock, in excess of
          full cumulative dividends as provided in Section (2)(a).

                    (d)  Subject to the foregoing provisions of
          this Section (2), the Board of Directors may declare and
          the Corporation may pay or set apart for payment
          dividends and other distributions on any of the Junior
          Securities and Parity Preferred Stock and may redeem,
          purchase or otherwise acquire any Junior Securities and
          Parity Preferred Stock, in either case from time to time,
          and the holders of the shares of PACS shall not be
          entitled to share therein.

                    (e)  Any dividend payment made on shares of
          PACS shall first be credited against the earliest accrued
          but unpaid dividend due with respect to shares of PACS.

                    (f)  All dividends paid with respect to shares
          of PACS pursuant to this Section (2) shall be paid pro
          rata to the holders entitled thereto.

                    SECTION 3.     REDEMPTION AND CONVERSION.

                    (a)  Mandatory Conversion.  On [anniversary
          date of closing date], 2000 (the "MANDATORY CONVERSION
          DATE"), subject to (x) the right of the Corporation to
          redeem the shares of PACS on or after [anniversary date
          of closing date], 1999 (the "INITIAL REDEMPTION DATE")
          and prior to the Mandatory Conversion Date, as described
          below, and (y) the conversion of the shares of PACS at
          the option of the holder at any time prior to the
          Mandatory Conversion Date, as described below, each
          outstanding share of PACS shall convert automatically
          (the "MANDATORY CONVERSION") into 

                    (i)  shares of Common Stock at the Common
                         Equivalent Rate (as hereinafter defined)
                         in effect on the Mandatory Conversion
                         Date; and 

                    (ii) the right to receive an amount in cash
                         equal to all accrued and unpaid dividends
                         on such share of PACS (the "ACCRUED
                         DIVIDEND AMOUNT") (other than previously
                         declared dividends payable to a different
                         holder of record on a prior date) to the
                         Mandatory Conversion Date, whether or not
                         declared, out of funds legally available
                         for the payment of dividends.  The Common
                         Equivalent Rate is initially one share of
                         Common Stock for each share of PACS and is
                         subject to adjustment as set forth below
                         (the "COMMON EQUIVALENT RATE").  

                    (b)  Redemption by the Corporation.

                    (i)  Right to Redeem.  Shares of PACS are not
                         redeemable by the Corporation prior to the
                         Initial Redemption Date.  At any time and
                         from time to time on or after the Initial
                         Redemption Date and prior to the Mandatory
                         Conversion Date, the Corporation shall
                         have the right to redeem, in whole or in
                         part, the outstanding shares of PACS. 
                         Upon any such redemption, the Corporation
                         shall deliver to the holders of shares of
                         PACS in exchange for each share so
                         redeemed, the greater of (A) a number of
                         shares of Common Stock equal to the Call
                         Price (as hereinafter defined) in effect
                         on the redemption date, divided by the
                         Current Market Price of the Common Stock
                         determined as of the second trading day
                         immediately preceding the Notice Date (as
                         hereinafter defined) or (B) .8197 of a
                         share of Common Stock (each a "REDEMPTION
                         RATE")(subject to adjustment as set forth
                         below).  The public announcement of any
                         call for redemption shall be made prior
                         to, or at the time of, the mailing of the
                         notice of such call to holders of shares
                         of PACS as described below.  If fewer than
                         all the outstanding shares of PACS are to
                         be redeemed, shares of PACS to be redeemed
                         shall be selected by the Corporation from
                         outstanding shares of PACS not previously
                         redeemed by lot or pro rata (as nearly as
                         may be practicable).  As used in this
                         subparagraph (b), the term "NOTICE DATE"
                         with respect to any notice given by the
                         Corporation in connection with a
                         redemption of shares of PACS means the
                         date on which first occurs either the
                         public announcement of such redemption or
                         the commencement of mailing of such notice
                         to the holders of shares of PACS.

                    (ii) Notice of Redemption.  The Corporation
                         shall provide notice of any redemption of
                         the shares of PACS pursuant to this
                         subparagraph (b) to holders of record of
                         PACS to be called for redemption not less
                         than 15 days nor more than 60 days prior
                         to the date fixed for such redemption. 
                         The earliest Notice Date for any call for
                         redemption of shares of PACS is not
                         earlier than [60 days prior to anniversary
                         date of closing], 1999.  Such notice shall
                         be provided by mailing notice of such
                         redemption, first class postage prepaid,
                         to each holder of record of shares of PACS
                         to be redeemed, at such holder's address
                         as it appears on the stock register of the
                         Corporation; provided that neither failure
                         to give such notice nor any defect therein
                         shall affect the validity of the
                         proceeding for the redemption of any
                         shares of PACS to be redeemed except as to
                         the holders to whom the Corporation has
                         failed to give said notice or whose notice
                         was defective.

                         Each such notice shall state, as
                         appropriate, the following and may contain
                         such other information as the Corporation
                         deems advisable:

                         (A)  the redemption date;

                         (B)  that all outstanding shares of PACS
                         are to redeemed or, in the case of a call
                         for redemption of fewer than all
                         outstanding shares of PACS, the number of
                         such shares held by such holder to be
                         redeemed;

                         (C)  the number of shares of Common Stock
                         deliverable upon redemption of each share
                         of PACS to be redeemed and, if applicable,
                         the Redemption Rate and the Current Market
                         Price used to calculate such number of
                         shares of Common Stock;

                         (D)  the place or places where
                         certificates for such shares are to be
                         surrendered for redemption; and 

                         (E)  that dividends on the shares of PACS
                         to be redeemed shall cease to accrue on
                         such redemption date (except as otherwise
                         provided herein).

                    (c)  Procedures Upon Conversion and Redemption.

                    (i)  Deposit of Shares and Funds.  The
                         Corporation's obligation to deliver shares
                         of Common Stock and provide funds upon
                         redemption in accordance with Sections
                         3(a) and 3(b) shall be deemed fulfilled
                         if, on or before the Mandatory Conversion
                         Date or a redemption date, as applicable,
                         the Corporation shall irrevocably deposit,
                         with a bank or trust company, or an
                         affiliate of a bank or trust company,
                         having an office or agency in New York
                         City, or shall set aside or make other
                         reasonable provision for the issuance of
                         such number of shares of Common Stock as
                         are required to be delivered by the
                         Corporation pursuant to Section 3(a) or
                         3(b), as the case may be, upon the
                         occurrence of the Mandatory Conversion or
                         the related redemption (and for the
                         payment of cash in lieu of the issuance of
                         fractional share amounts and accrued and
                         unpaid dividends payable in cash on the
                         shares to be redeemed as and to the extent
                         provided by Section 3(a) or 3(b), as the
                         case may be).  Any interest accrued on
                         such funds shall be paid to the
                         Corporation from time to time.  Subject to
                         applicable laws, any shares of Common
                         Stock or funds so deposited and unclaimed
                         at the end of two years from such
                         redemption date shall be repaid and
                         released to the Corporation, after which
                         time the holder or holders of such shares
                         of PACS so converted or called for
                         redemption shall look only to the
                         Corporation for delivery of such shares of
                         Common Stock or funds.

                    (ii) Surrender of Certificates; Status.  Each
                         holder of shares of PACS to be converted
                         or redeemed pursuant to Section 3(a) or
                         3(b), as the case may be, shall surrender
                         the certificates evidencing such shares
                         (properly endorsed or assigned for
                         transfer, if the Board of Directors shall
                         so require and the notice shall so state)
                         to the Corporation at the place designated
                         by the Corporation and shall thereupon be
                         entitled to receive certificates
                         evidencing shares of Common Stock and to
                         receive any funds payable pursuant to
                         Sections 3(a) or 3(b), as the case may be,
                         following such surrender and following the
                         date of such conversion or redemption.  In
                         case fewer than all the shares represented
                         by any such surrendered certificate are
                         called for redemption, a new certificate
                         shall be issued at the expense of the
                         Corporation representing the unredeemed
                         shares.  If, on the Mandatory Conversion
                         Date, or, in the event of a redemption, on
                         the date fixed for redemption, as the case
                         may be, shares of Common Stock and funds
                         necessary for such Mandatory Conversion or
                         redemption, as applicable, shall have been
                         irrevocably either set aside by the
                         Corporation separate and apart from its
                         other funds or assets in trust for the
                         account of the holders of the shares to be
                         converted or to be redeemed (and so as to
                         be and continue to be available therefor)
                         or deposited with a bank or trust company
                         or an affiliate thereof or the Corporation
                         shall have made other reasonable provision
                         therefor, then, notwithstanding that the
                         certificates evidencing any shares of PACS
                         so converted or called for redemption
                         shall not have been surrendered, the
                         shares of PACS represented thereby so
                         converted or called for redemption shall
                         be deemed no longer outstanding, dividends
                         with respect to the shares so converted or
                         called for redemption shall cease to
                         accrue on the Mandatory Conversion Date or
                         the date fixed for redemption, as
                         applicable, (except that holders of shares
                         of PACS at the close of business on a
                         record date for any payment of dividends
                         shall be entitled to receive the dividend
                         payable on such shares on the
                         corresponding Dividend Payment Date
                         notwithstanding the redemption of such
                         shares following such record date and
                         prior to such Dividend Payment Date) and
                         all rights with respect to the shares so
                         converted or called for redemption shall
                         forthwith after such date cease and
                         terminate, except for the rights of the
                         holders to receive the shares of Common
                         Stock and funds, if any, payable pursuant
                         to Sections 3(a) or 3(b) without interest
                         upon surrender of their certificates
                         therefor (unless the Corporation defaults
                         on the delivery of such shares or the
                         payment of such funds).  Holders of shares
                         of PACS that are converted or redeemed
                         shall not be entitled to receive dividends
                         declared and paid on such shares of Common
                         Stock, and such shares of Common Stock
                         shall not be entitled to vote, until such
                         shares of Common Stock are issued upon the
                         surrender of the certificates representing
                         such shares of PACS and upon such
                         surrender such holders shall be entitled
                         to receive such dividends declared and
                         paid on such shares of Common Stock
                         subsequent to such redemption date or
                         Mandatory Conversion Date with interest
                         thereon.  Amounts payable in cash in
                         respect of shares of PACS or shares of
                         Common Stock shall not bear interest.

                    (d)  Conversion at Option of Holder.  Shares of
          PACS are convertible, in whole or in part, at the option
          of the holder thereof, at any time prior to the Mandatory
          Conversion Date, unless previously redeemed, into shares
          of Common Stock at a rate of .8197 of a share of Common
          Stock for each share of PACS (the "OPTIONAL CONVERSION
          RATE"), subject to adjustment as set forth below.  The
          right to convert shares of PACS called for redemption
          shall terminate immediately prior to the close of
          business on the redemption date with respect to such
          shares.

                    Conversion of shares of PACS at the option of
          the holder may be effected by delivering certificates
          evidencing such shares, together with written notice of
          conversion and a proper assignment of such certificates
          to the Corporation or in blank, to the office or agency
          to be maintained by the Corporation for that purpose
          (and, if applicable, cash payment of an amount equal to
          the dividend payable on such shares), and otherwise in
          accordance with conversion procedures established by the
          Corporation.  Each optional conversion shall be deemed to
          have been effected immediately prior to the close of
          business on the date on which the foregoing requirements
          shall have been satisfied.  The conversion shall be at
          the Optional Conversion Rate in effect at such time and
          on such date.

                    Holders of shares of PACS at the close of
          business on a record date for any payment of declared
          dividends shall be entitled to receive the dividend
          payable on such shares on the corresponding Dividend
          Payment Date notwithstanding the conversion of such
          shares following such record date and prior to the
          corresponding Dividend Payment Date.  However, shares of
          PACS surrendered for conversion after the close of
          business on a record date for any payment of dividends
          and before the opening of business on the next succeeding
          Dividend Payment Date must be accompanied by payment to
          the Corporation in cash of an amount equal to the
          dividend thereon which is to be paid on such Dividend
          Payment Date (unless such shares have been called for
          redemption on a redemption date between such record date
          and such Dividend Payment Date).  A holder of shares of
          PACS called for redemption on [anniversary date of
          closing date], 1999 or any other Dividend Payment Date
          thereafter will receive the dividend on such shares
          payable on that date without paying an amount equal to
          such dividend to the Corporation upon conversion.  Except
          as provided above, upon any optional conversion of shares
          of PACS, the Corporation shall make no payment or
          allowance for unpaid dividends, whether or not in
          arrears, on converted shares of PACS or for previously
          declared dividends or distributions on the shares of
          Common Stock issued upon such conversion.

                    (e)  Adjustments of the Common Equivalent Rate,
          Optional Conversion Rate and Redemption Rate.  The Common
          Equivalent Rate, the Optional Conversion Rate and the
          Redemption Rates (collectively, the "RATES") shall be
          each subject to adjustment from time to time as provided
          below in this section (e).

                         (i)  If the Corporation shall, after
          [closing date],  1996:

                              (A)  pay a stock dividend or make a
                                   distribution with respect to its
                                   Common Stock in shares of such
                                   Common Stock,

                              (B)  subdivide or split its
                                   outstanding Common Stock into a
                                   greater number of shares,

                              (C)  combine its outstanding shares
                                   of Common Stock into a smaller
                                   number of shares, or

                              (D)  issue by reclassification of its
                                   shares of Common Stock any
                                   shares of common stock of the
                                   Corporation;

                              then, in any such event, the Rates in
                              effect immediately prior to such
                              event shall each be adjusted so that
                              the holder of any shares of PACS
                              shall thereafter be entitled to
                              receive, upon Mandatory Conversion or
                              upon conversion at the option of the
                              holder or redemption, the number of
                              shares of Common Stock of the
                              Corporation which such holder would
                              have owned or been entitled to
                              receive immediately following any
                              event described above had such shares
                              of PACS been converted immediately
                              prior to such event or any record
                              date with respect thereto.   Such
                              adjustment shall become effective at
                              the opening of business on the
                              business day next following the
                              record date for determination of
                              stockholders entitled to receive such
                              dividend or distribution, in the case
                              of a dividend or distribution, and
                              shall become effective immediately
                              after the effective date, in the case
                              of a subdivision, split, combination
                              or reclassification.  Such
                              adjustments shall be made
                              successively.

                         (ii) If the Corporation shall, after
                              [closing date], 1996, issue rights or
                              warrants to all holders of its Common
                              Stock (other than Rights issued
                              pursuant to any Rights Plan of the
                              Corporation) entitling them to
                              subscribe for or purchase shares of
                              Common Stock at a price per share
                              less than the Current Market Price at
                              the time of such issue, then, in any
                              such event unless such rights or
                              warrants are issued to holders of
                              shares of PACS on a pro rata basis
                              with the shares of Common Stock based
                              on the Common Equivalent Rate on the
                              date immediately preceding such
                              issuance, each Rate shall be adjusted
                              by multiplying such Rate, in effect
                              immediately prior to the date of
                              issuance of such rights or warrants,
                              by a fraction, of which the numerator
                              shall be the number of shares of
                              Common Stock outstanding on the date
                              of issuance of such rights or
                              warrants, immediately prior to such
                              issuance, plus the number of
                              additional shares of Common Stock
                              offered for subscription or purchase
                              pursuant to such rights or warrants,
                              and of which the denominator shall be
                              the number of shares of Common Stock
                              outstanding on the date of issuance
                              of such rights or warrants,
                              immediately prior to such issuance,
                              plus the number of additional shares
                              of Common Stock which the aggregate
                              offering price of the total number of
                              shares of Common Stock so offered for
                              subscription or purchase pursuant to
                              such rights or warrants would
                              purchase at such Current Market Price
                              (determined by multiplying such total
                              number of shares by the exercise
                              price of such rights or warrants and
                              dividing the product so obtained by
                              such Current Market Price).  Such
                              adjustment shall become effective at
                              the opening of business on the
                              business day next following the
                              record date for the determination of
                              stockholders entitled to receive such
                              rights or warrants. To the extent
                              that shares of Common Stock are not
                              delivered after the expiration of
                              such rights or warrants, each Rate
                              shall be readjusted to the applicable
                              Rate which would then be in effect
                              had the adjustments been made upon
                              the issuance of such rights or
                              warrants upon the basis of delivery
                              of only the number of shares of
                              Common Stock actually delivered. 
                              Such adjustment shall be made
                              successively.

                         (iii)     If the Corporation shall after
                                   [closing date], 1996, pay a
                                   dividend or make a distribution
                                   to all holders of its Common
                                   Stock of evidences of its
                                   indebtedness, cash or other
                                   assets (including capital stock
                                   of the Corporation or any
                                   subsidiary of the Corporation,
                                   but excluding (x) the
                                   Corporation's regular quarterly
                                   cash dividend and (y) dividends
                                   referred to in subparagraph (i)
                                   above) or shall issue to all
                                   holders of its Common Stock
                                   rights or warrants to subscribe
                                   for or purchase any of its
                                   securities (other than Rights
                                   issued pursuant to any Rights
                                   Plan of the Corporation and
                                   those referred to in
                                   subparagraph (ii) above), then
                                   unless such dividend is paid or
                                   distribution is made to each
                                   holder of shares of PACS on a
                                   pro rata basis with the shares
                                   of Common Stock based on the
                                   Common Equivalent Rate on the
                                   date immediately preceding such
                                   payment or distribution, in any
                                   such event, each Rate shall be
                                   adjusted by multiplying such
                                   Rate in effect on the record
                                   date mentioned below, by a
                                   fraction of which the numerator
                                   shall be the Current Market
                                   Price per share of the Common
                                   Stock on the record date for the
                                   determination of stockholders
                                   entitled to receive such
                                   dividend or distribution, and of
                                   which the denominator shall be
                                   such Current Market Price per
                                   share of Common Stock less the
                                   fair market value (as determined
                                   in good faith by the Board of
                                   Directors, whose good faith
                                   determination shall be
                                   conclusive, and described in a
                                   resolution adopted with respect
                                   thereto) as of such record date
                                   of the portion of the assets or
                                   evidences of indebtedness so
                                   distributed or of such
                                   subscription rights or warrants
                                   applicable to one share of
                                   Common Stock.  Such adjustment
                                   shall become effective on the
                                   opening of business on the
                                   business day next following the
                                   record date for the
                                   determination of stockholders
                                   entitled to receive such
                                   dividend or distribution.  Such
                                   adjustment shall be made
                                   successively.  

                         (iv) Any shares of Common Stock issuable
                              in payment of a dividend or other
                              distribution shall be deemed to have
                              been issued immediately prior to the
                              close of business on the record date
                              for such dividend or other
                              distribution for purposes of
                              calculating the number of outstanding
                              shares of Common Stock under
                              subsection (ii) above.

                         (v)  The Corporation shall also be
                              entitled to make upward adjustments
                              in the Common Equivalent Rate, the
                              Optional Conversion Rate, the
                              Redemption Rate and the Call Price,
                              as it in its sole discretion shall
                              determine to be advisable, in order
                              that any stock dividends,
                              subdivisions of shares, distribution
                              of rights to purchase stock or
                              securities, or distribution of
                              securities convertible into or
                              exchangeable for stock (or any
                              transaction which could be treated as
                              any of the foregoing transactions
                              pursuant to Section 305 of the
                              Internal Revenue Code of 1986, as
                              amended) made by the Corporation to
                              its stockholders after [closing
                              date], 1996 shall not be taxable.

                         (vi) In any case in which subsection 4(e)
                              shall require that an adjustment as a
                              result of any event becomes effective
                              at the opening of business on the
                              business day next following a record
                              date and the date fixed for
                              conversion pursuant to subsection
                              3(a) or redemption pursuant to
                              subsection 3(b) or 3(d) occurs after
                              such record date, but before the
                              occurrence of such event, the
                              Corporation may, in its sole
                              discretion, elect to defer the
                              following until after the occurrence
                              of such event: (A) issuing to the
                              holder of any converted or redeemed
                              shares of PACS the additional shares
                              of Common Stock issuable upon such
                              conversion or redemption over the
                              shares of Common Stock issuable
                              before giving effect to such
                              adjustments and (B) paying to such
                              holder any amount in cash in lieu of
                              a fractional share of Common Stock
                              pursuant to subsection 3(j).

                         (vii)     All adjustments to the Rates
                                   shall be calculated to the
                                   nearest 1/100th of a share of
                                   Common Stock.  No adjustment in
                                   the Rates shall be required
                                   unless such adjustment would
                                   require an increase or decrease
                                   of at least one percent therein;
                                   provided, however, that any
                                   adjustment which by reason of
                                   this subsection (vii) is not
                                   required to be made shall be
                                   carried forward and taken into
                                   account in any subsequent
                                   adjustment.

                    (f)  Adjustment for Consolidation or Merger. 
          In case of any consolidation or merger to which the
          Corporation is a party (other than a merger or
          consolidation in which the Corporation is the surviving
          or continuing corporation and in which the Common Stock
          outstanding immediately prior to the merger or
          consolidation remains unchanged), or in the case of any
          sale or transfer to another corporation of the property
          of the Corporation as an entirety or substantially as an
          entirety, proper provisions shall be made so that each
          share of PACS shall, after consummation of such
          transaction, be subject to (i) conversion at the option
          of the holder into the kind and amount of securities,
          cash or other property receivable upon consummation of
          such transaction by a holder of the number of shares of
          Common Stock into which such share of PACS might have
          been converted immediately prior to consummation of such
          transaction, (ii) conversion on the Mandatory Conversion
          Date into the kind and amount of securities, cash or
          other property receivable upon consummation of such
          transaction by a holder of the number of shares of Common
          Stock into which such shares of PACS would have converted
          if the conversion on the Mandatory Conversion Date had
          occurred immediately prior to the date of consummation of
          such transaction, plus the right to receive cash in an
          amount equal to all accrued and unpaid dividends on such
          shares of PACS (other than previously declared dividends
          payable to a holder of record as of a prior date), and
          (iii) redemption on any redemption date in exchange for
          the kind and amount of securities, cash or other property
          receivable upon consummation of such transaction by a
          holder of the number of shares of Common Stock that would
          have been issuable at the Redemption Rate in effect on
          such redemption date upon a redemption of such share
          immediately prior to consummation of such transaction,
          assuming in each case that such holder of Common Stock
          failed to exercise rights of election, if any, as to the
          kind or amount of securities, cash or other property
          receivable upon consummation of such transaction
          (provided that if the kind or amount of securities, cash
          or other property receivable upon consummation of such
          transaction is not the same for each non-electing share,
          then the kind and amount of securities, cash or other
          property receivable upon consummation of such transaction
          for each non-electing share shall be deemed to be the
          kind and amount so receivable per share by a plurality of
          the non-electing shares).  The kind and amount of
          securities into or for which the shares of PACS shall be
          convertible or redeemable after consummation of such
          transaction shall be subject to adjustment as described
          in Section 3(e) following the date of consummation of
          such transaction.  The Corporation may not become a party
          to any such transaction unless (A) the terms thereof are
          consistent with the foregoing or (B) the holders of
          shares of PACS shall have approved other terms in
          accordance with the provisions of Section 5(c).

                    For purposes of the immediately preceding
          paragraph, any sale or transfer to another corporation of
          property of the Corporation which did not account for at
          least 50% of the consolidated net income of the
          Corporation for its most recent fiscal year ending prior
          to the consummation of such transaction shall not in any
          event be deemed to be a sale or transfer of the property
          of the Corporation as an entirety or substantially as an
          entirety.

                    (g)  Notices of Adjustments. (i) Whenever the
          Rates are adjusted as herein provided, the Corporation
          shall:

                         (A)  forthwith compute the adjusted Rates
                              in accordance herewith and prepare a
                              certificate signed by an officer of
                              the Corporation setting forth the
                              adjusted Rates, the method of
                              calculation thereof in reasonable
                              detail and the facts requiring such
                              adjustment and upon which such
                              adjustment is based, which
                              certificate shall be conclusive,
                              final and binding evidence of the
                              correctness of the adjustment, and
                              file such certificate forthwith with
                              the transfer agent for the shares of
                              PACS and the Common Stock; and

                         (B)  make a prompt public announcement and
                              mail a notice to the holders of the
                              outstanding shares of PACS stating
                              that the Rates have been adjusted,
                              the facts requiring such adjustment
                              and upon which such adjustment is
                              based and setting forth the adjusted
                              Rates,  such notice to be mailed at
                              or prior to the time the Corporation
                              mails an interim statement to its
                              stockholders covering the fiscal
                              quarter during which the facts
                              requiring such adjustment occurred,
                              but in any event within 45 days of
                              the end of such fiscal quarter.

                    (ii) In case, at any time while any of the
                         shares of PACS are outstanding,

                         (A)  the Corporation shall declare a
                              dividend (or any other distribution)
                              on its Common Stock, excluding any
                              cash dividends; or

                         (B)  the Corporation shall authorize the
                              issuance to all holders of its Common
                              Stock of rights or warrants to
                              subscribe for or purchase shares of
                              its Common Stock or of any other
                              subscription rights or warrants; or

                         (C)  the Corporation shall authorize any
                              reclassification, subdivision or
                              split  of its Common Stock (other
                              than a subdivision or combination
                              thereof) or any consolidation or
                              merger to which the Corporation is a
                              party and for which approval of any
                              stockholders of the Corporation is
                              required (except for a merger of the
                              Corporation into one of its
                              subsidiaries solely for the purpose
                              of changing the corporate domicile of
                              the Corporation to another state of
                              the United States and in connection
                              with which there is no substantive
                              change in the rights or privileges of
                              any securities of the Corporation
                              other than changes resulting from
                              differences in the corporate statutes
                              of the then existing and the new
                              state of domicile), or the sale or
                              transfer to another corporation of
                              the property of the Corporation as an
                              entirety or substantially as an
                              entirety; or

                       (D)    the Corporation shall authorize the
                              voluntary or involuntary dissolution,
                              liquidation or winding up of the
                              Corporation;

          then the Corporation shall cause to be filed at each
          office or agency maintained for the purpose of conversion
          of the shares of PACS, and shall cause to be mailed to
          the holders of shares of PACS at their last addresses as
          they shall appear on the stock register, at least 10 days
          before the date hereinafter specified (or the earlier of
          the dates hereinafter specified, in the event that more
          than one date is specified), a notice stating (A) the
          date on which a record is to be taken for the purpose of
          such dividend, distribution, rights or warrants, or, if a
          record is not to be taken, the date as of which the
          holders of Common Stock of record to be entitled to such
          dividend, distribution, rights or warrants are to be
          determined, or (B) the date on which any such
          reclassification, consolidation, merger, sale, transfer,
          dissolution, liquidation or winding up is expected to
          become effective, and the date as of which it is expected
          that holders of Common Stock of record shall be entitled
          to exchange their Common Stock for securities or other
          property (including cash), if any, deliverable upon such
          reclassification, consolidation, merger, sale, transfer,
          dissolution, liquidation or winding up.  The failure to
          give or receive the notice required by this subsection
          (g)(ii) or any defect therein shall not affect the
          legality or validity of such dividend, distribution,
          right or warrant or other action.

                    (h)  Effect of Conversions and Redemptions. 
          The person or persons in whose name or names any
          certificate or certificates for shares of Common Stock
          shall be issuable upon any conversion or redemption shall
          be deemed to have become on the date of any such
          conversion or redemption the holder or holders of record
          of the shares represented thereby; provided, however,
          that any such surrender on any date when the stock
          transfer books of the Corporation shall be closed shall
          constitute the person or persons in whose name or names
          the certificate or certificates for such shares are to be
          issued as the record holder or holders thereof for all
          purposes at the opening of business on the next
          succeeding day on which such stock transfer books are
          open.

                    (i)  No Fractional Shares.  No fractional
          shares or scrip representing fractional shares of Common
          Stock shall be issued upon the redemption or conversion
          of any shares of PACS.  In lieu of any fractional share
          otherwise issuable in respect of the aggregate number of
          shares of PACS of any holder which are redeemed or
          converted on any redemption date or upon Mandatory
          Conversion or any optional conversion, such holder shall
          be entitled to receive an amount in cash (computed to the
          nearest cent) equal to the value of such fractional
          shares based on the (i) Current Market Price as of the
          second Trading Date immediately preceding the Notice
          Date, in the case of redemption, or (ii) Closing Price of
          the Common Stock determined (A) as of the fifth Trading
          Date immediately preceding the Mandatory Conversion Date,
          in the case of Mandatory Conversion, or (B) as of the
          second Trading Date immediately preceding the effective
          date of conversion, in the case of an optional conversion
          by a holder.  If more than one share shall be surrendered
          for conversion or redemption at one time by or for the
          same holder, the number of full shares of Common Stock
          issuable upon conversion thereof shall be computed on the
          basis of the aggregate number of shares of PACS so
          surrendered or redeemed.

                    (j)  Reissuance.  Shares of PACS that have been
          issued and reacquired in any manner, including shares
          purchased, exchanged, redeemed or converted, shall not be
          reissued as part of PACS and shall (upon compliance with
          any applicable provisions of the laws of the State of
          Connecticut) have the status of authorized and unissued
          shares of preferred stock of the Corporation ("PREFERRED
          STOCK") undesignated as to series and may be redesignated
          and reissued as part of any series of Preferred Stock.

                    (k)  Definitions.  As used in this Article ___:

                    (i)  the term "BUSINESS DAY" shall mean any day
                         other than a Saturday, Sunday, or a day on
                         which banking institutions in the State of
                         New York or the State of Connecticut are
                         authorized or obligated by law or
                         executive order to close or are closed
                         because of a banking moratorium or
                         otherwise;

                    (ii) the term "CALL PRICE" of each share of
                         PACS shall be the sum of (x) $76 1/8 and
                         (y) all accrued and unpaid dividends
                         thereon to but not including the
                         redemption date (other than previously
                         declared dividends payable to a holder of
                         record as of a prior date);

                    (iii)     the term "CLOSING PRICE" on any day
                              shall mean the last reported sales
                              price on such day or, in case no such
                              sale takes place on such day, the
                              average of the reported closing high
                              and low quotations, in either case on
                              the principal national securities
                              exchange on which the Common Stock is
                              listed or admitted to trading or, if
                              the Common Stock is not listed or
                              admitted to trading on a national
                              securities exchange, on the Nasdaq
                              National Market System, or, if the
                              Common Stock is not listed or
                              admitted to trading on a national
                              securities exchange or the Nasdaq
                              National Market System, the average
                              of the high bid and low-asked
                              quotations of the Common Stock in the
                              over-the-counter market on the day in
                              question as reported by the National
                              Quotation Bureau Incorporated, or a
                              similarly generally accepted
                              reporting service, or, if no such
                              quotations are available, the fair
                              market value of the Common Stock as
                              determined by any New York Stock
                              Exchange member firm selected from
                              time to time by the Board of
                              Directors for such purpose;

                    (iv) the term "CURRENT MARKET PRICE" per share
                         of Common Stock at any date shall be
                         deemed to be the lesser of (x) the average
                         of the daily Closing Prices for the twenty
                         consecutive Trading Dates ending on and
                         including the date in question or (y) the
                         Closing Price of the Common Stock for such
                         date of determination; provided, that, if
                         any event that results in an adjustment of
                         the Common Equivalent Rate occurs during
                         such twenty day period, the Current Market
                         Price as determined pursuant to the
                         foregoing shall be appropriately adjusted
                         to reflect the occurrence of such event; 

                    (v)  the term "PARITY PREFERRED STOCK" means
                         the Corporation's Class A Voting Preferred
                         Stock without par value and Class B
                         Preferred Stock without par value and any
                         other class or series of the Corporation's
                         Preferred Stock that by its terms ranks on
                         a parity as to both the payment of
                         dividends and distribution of assets upon
                         a liquidation of the Corporation; and

                    (vi) the term "TRADING DATE" shall mean a date
                         on which the New York Stock Exchange (or
                         any successor thereto) is open for the
                         transaction of business.

                    (l)  Payment of Taxes.  The Corporation shall
          pay any and all documentary, stamp or similar issue or
          transfer taxes payable in respect of the issue or
          delivery of shares of Common Stock on the redemption or
          conversion of shares of PACS pursuant to this Section 3;
          provided, however, that the Corporation shall not be
          required to pay any tax which may be payable in respect
          of any registration of transfer involved in the issue or
          delivery of shares of Common Stock in a name other than
          that of the registered holder of shares of PACS redeemed
          or converted or to be redeemed or converted, and no such
          issue or delivery shall be made unless and until the
          person requesting such issue has paid to the Corporation
          the amount of any such tax or has established, to the
          satisfaction of the Corporation, that such tax has been
          paid.

                    (m)  Reservation of Common Stock.  The
          Corporation shall at all times reserve and keep
          available, free from preemptive rights, out of the
          aggregate of its authorized but unissued Common Stock
          and/or its issued Common Stock held in its treasury, for
          the purpose of effecting any Mandatory Conversion of the
          shares of PACS or any conversion of the shares of PACS at
          the option of the holder, the full number of shares of
          Common Stock then deliverable upon any such conversion of
          all outstanding shares of PACS.

                         SECTION 4.     LIQUIDATION RIGHTS.

                    (a)  In the event of the liquidation,
          dissolution, or winding up of the business of the
          Corporation, whether voluntary or involuntary, the
          holders of shares of PACS then outstanding, after payment
          or provision for payment of the debts and other
          liabilities of the Corporation and the payment or
          provision for payment of any distribution on any shares
          of the Corporation having a preference and a priority
          over the shares of PACS on liquidation, and before any
          distribution to the holders of Junior Securities, shall
          be entitled to be paid out of the assets of the
          Corporation available for distribution to its
          stockholders an amount per share of PACS in cash equal to
          the sum of (i) $76 1/8 plus (ii) all accrued and unpaid
          dividends thereon.  All amounts paid in respect of such
          liquidation, dissolution or winding up shall be paid pro
          rata to the holders of PACS entitled thereto.  In the
          event the assets of the Corporation available for
          distribution to the holders of the shares of PACS upon
          any dissolution, liquidation or winding up of the
          Corporation shall be insufficient to pay in full the
          liquidation payments payable to the holders of
          outstanding shares of PACS and of all other series of
          Parity Securities, the holders of shares of PACS and of
          all series of Parity Securities shall share ratably in
          such distribution of assets in proportion to the amount
          which would be payable on such distribution if the
          amounts to which the holders of outstanding shares of
          PACS and the holders of outstanding shares of such Parity
          Preferred Stock were paid in full.  Except as provided in
          this Section 4, holders of PACS shall not be entitled to
          any distribution in the event of liquidation, dissolution
          or winding up of the affairs of the Corporation.

                    (b)  For the purposes of this Section 4, none
          of the following shall be deemed to be a voluntary or
          involuntary liquidation, dissolution or winding up of the
          Corporation:

                         (i)  the sale, transfer, lease or exchange
                              of the assets of the Corporation as
                              an entirety or substantially as an
                              entirety; or

                         (ii) the consolidation or merger of the
                              Corporation with one or more other
                              corporations (whether or not the
                              Corporation is the corporation
                              surviving such consolidation or
                              merger).

                    SECTION 5.     VOTING RIGHTS.

                    (a)  The holders of record of shares of PACS
          shall not be entitled to any voting rights except as
          provided in Section 5 or as otherwise provided by law.**

                              
          (**)  At Aetna's election, the terms of the PACS may be
          modified to provide for voting rights as determined by
          Aetna.  In that event, the PACS shall be designated
          "6.25% Class A Voting Preferred Stock."
          voting rights have been conferred and are exercisable,
          with each share of PACS entitled to vote on this and
          other matters upon which holders of Preferred Stock vote
          as a group, shall have the right to vote for the election
          of two Preferred Stock Directors of the Corporation, such
          Directors to be in addition to the number of Directors
          constituting the Board of Directors immediately prior to
          the accrual of such right.  Such right of the holders of
          shares of PACS to elect two Preferred Stock Directors
          shall, when vested, continue until all dividends in
          arrears on the shares of PACS and such other series of
          Preferred Stock shall have been paid in full and the
          right of any other series of Preferred Stock to exercise
          voting rights, separate from the Common Stock, to elect
          Preferred Stock Directors shall terminate or have
          terminated and, when so paid, and any such termination
          occurs or has occurred, such right of the holders of
          shares of PACS to elect two Preferred Stock Directors
          separately as a class shall cease, subject always to the
          same provisions for the vesting of such right of the
          holders of the shares of PACS to elect two Preferred
          Stock Directors in the case of future dividend defaults.


                    (b)  For so long as any shares of PACS are
          outstanding, if at any time dividends payable on the
          shares of PACS or any other series of Preferred Stock are
          in arrears and unpaid in an aggregate amount equal to or
          exceeding the aggregate amount of dividends payable
          thereon for six quarterly dividend periods, or if any
          other series of Preferred Stock shall be entitled for any
          other reason to exercise voting rights, separate from the
          Common Stock, to elect any Directors of the Corporation
          ("PREFERRED STOCK DIRECTORS"), the holders of the shares
          of PACS, voting separately as a class with the holders of
          all other series of Preferred Stock upon which like

                    The term of office of each Director elected
          pursuant to the preceding paragraph shall terminate on
          the earlier of (i) the next annual meeting of
          stockholders at which a successor shall have been elected
          and qualified or (ii) the termination of the right of the
          holders of shares of PACS and such other series of
          Preferred Stock to vote for Directors pursuant to the
          preceding paragraph.  Vacancies on the Board of Directors
          resulting from the death, resignation or other cause of
          any such Director shall be filled exclusively by no less
          than two-thirds of the remaining Directors and the
          Director so elected shall hold office until a successor
          is elected and qualified.

                    (c)  For as long as any shares of PACS remain
          outstanding, the affirmative consent of the holders of at
          least two-thirds thereof actually voting (voting
          separately as a class) given in person or by proxy, at
          any annual meeting or special meeting of the shareholders
          called for such purpose, shall be necessary to (i) amend,
          alter or repeal any of the provisions of the Articles of
          Incorporation of the Corporation which would adversely
          affect the powers, preferences or rights of the holders
          of the shares of PACS then outstanding or reduce the
          minimum time required for any notice to which holders of
          shares of PACS then outstanding may be entitled;
          provided, however, that any such amendment, alteration or
          repeal that would authorize, create or increase the
          authorized amount of any additional shares of Junior
          Securities or any other shares of stock (whether or not
          already authorized) ranking on a parity with the shares
          of PACS shall be deemed not to adversely affect such
          powers, preferences or rights and shall not be subject to
          approval by the holders of shares of PACS; and provided
          further that clause (i) shall not be applicable to the
          amendment, alteration or repeal of any provisions of the
          Articles of Incorporation of the Corporation approved at
          a meeting of the shareholders the record date of which is
          prior to the issuance of any shares of PACS; (ii)
          authorize or create, or increase the authorized amount
          of, any capital stock, or any security convertible into
          capital stock, of any class ranking senior to PACS as to
          payment of dividends or the distribution of assets upon
          liquidation, dissolution or winding up of the
          Corporation; or (iii) merge or consolidate with or into
          any other corporation, unless each holder of the shares
          of PACS immediately preceding such merger or
          consolidation shall have the right either to (A) receive
          or continue to hold in the resulting corporation the same
          number of shares, with substantially the same rights and
          preferences, as correspond to the shares of PACS so held
          or (B) convert into shares of Common Stock at the Common
          Equivalent Rate in effect on the date immediately
          preceding the announcement of any such merger or
          consolidation.

                    There is no limitation on the issuance by the
          Corporation of Parity Preferred Stock or of any class
          ranking junior to the shares of PACS.

                    Notwithstanding the provisions summarized in
          the preceding two paragraphs, however, no such approval
          described therein of the holders of the shares of PACS
          shall be required to authorize an increase in the number
          of authorized shares of Preferred Stock or if, at or
          prior to the time when such amendment, alteration, or
          repeal is to take effect or when the authorization,
          creation or increase of any such senior stock or security
          is to be made, or when such consolidation or merger,
          liquidation, dissolution or winding up is to take effect,
          as the case may be, provision is made for the redemption
          of all shares of PACS at the time outstanding.

                    SECTION 6.     PREEMPTIVE RIGHTS.

                    The holders of shares of PACS shall have no
          preemptive rights, including rights with respect to any
          shares of capital stock or other securities of the
          Corporation convertible into or carrying rights or
          options to purchase any such shares.

                    SECTION 7.     LIMITATIONS.

                    Except as may otherwise be required by law, the
          shares of PACS shall not have any terms, limitations, and
          relating rights and preferences other than those
          specifically set forth in this resolution (as such
          resolution may be amended from time to time) or otherwise
          in the Certificate of Incorporation of the Corporation.






                                                        EXHIBIT B-1

                           FORM OF AFFILIATE LETTER
                              (U.S. Healthcare)

          Butterfly, Inc.
          [address]
          [address]

          Ladies and Gentlemen:

                    I have been advised that as of the date of this
          letter I may be deemed to be an "affiliate" of U.S.
          Healthcare, Inc., a Pennsylvania corporation ("U.S.
          HEALTHCARE"), as the term "affiliate" is defined for
          purposes of paragraphs (c) and (d) of Rule 145 of the
          rules and regulations (the "RULES AND REGULATIONS") of
          the Securities and Exchange Commission (the "COMMISSION")
          under the Securities Act of 1933, as amended (the "ACT"). 
          Pursuant to the terms of the Agreement and Plan of Merger
          dated as of March 30, 1996 (the "AGREEMENT") among U.S.
          Healthcare, Aetna Life and Casualty Company, a
          Connecticut insurance corporation ("AETNA"), Butterfly,
          Inc., a Connecticut corporation ("PARENT"), New Merger
          Corporation, a Pennsylvania corporation and a wholly
          owned subsidiary of Parent ("U.S. HEALTHCARE SUB") and
          Antelope Sub, Inc., a Connecticut corporation and a
          wholly owned subsidiary of Parent, U.S. Healthcare will
          be merged with and into U.S. Healthcare Sub with U.S.
          Healthcare to be the survivor in the merger (the "U.S.
          HEALTHCARE SUB MERGER").

                    As a result of the U.S. Healthcare Sub Merger,
          I will receive shares of Common Stock, par value $1.00
          per share, and Preferred Stock, par value $.01 per share,
          of Parent (the "PARENT SECURITIES") in exchange for
          shares owned by me of Common Stock, par value $0.005 per
          share, and Class B Stock, par value $0.005 per share, of
          U.S. Healthcare.

                    I represent, warrant and covenant to Parent
          that as of the date I receive any Parent Securities as a
          result of the U.S. Healthcare Sub Merger:

                    A.   I shall not make any sale, transfer or
          other disposition of the Parent Securities in violation
          of the Act or the Rules and Regulations.

                    B.   I have carefully read this letter and the
          Agreement and discussed the requirements of such
          documents and other applicable limitations upon my
          ability to sell, transfer or otherwise dispose of the
          Parent Securities to the extent I felt necessary with my
          counsel or counsel for U.S. Healthcare.

                    C.   I have been advised that the issuance of
          Parent Securities to me pursuant to the U.S. Healthcare
          Sub Merger has been registered with the Commission under
          the Act on a Registration Statement on Form S-4. 
          However, I have also been advised that, since at the time
          the U.S. Healthcare Sub Merger was submitted for a vote
          of the shareholders of U.S. Healthcare, I may be deemed
          to have been an affiliate of U.S. Healthcare and the
          distribution by me of the Parent Securities has not been
          registered under the Act, I may not sell, transfer or
          otherwise dispose of the Parent Securities issued to me
          in the U.S. Healthcare Sub Merger unless (i) such sale,
          transfer or other disposition has been registered under
          the Act, (ii) such sale, transfer or under other
          disposition is made in conformity with Rule 145
          promulgated by the Commission under the Act, or (iii) in
          the opinion of counsel reasonably acceptable to Parent,
          or a "no action" letter obtained by the undersigned from
          the staff of the Commission, such sale, transfer or other
          disposition is otherwise exempt from registration under
          the Act.

                    D.   I understand that Parent is under no
          obligation to register the sale, transfer or other
          disposition of the Parent Securities by me or on my
          behalf under the Act or to take any other action
          necessary in order to make compliance with an exemption
          from such registration available.*

               * Affiliate Letter of the Principal Stockholder will
          contain the following additional language: "other than
          pursuant to the terms of the Registration Rights
          Agreement, dated as of March 30, 1996, between Parent and
          the Principal Stockholder."

                    "THE SHARES REPRESENTED BY THIS CERTIFICATE
                    WERE ISSUED IN A TRANSACTION TO WHICH RULE 145
                    PROMULGATED UNDER THE SECURITIES ACT OF 1933
                    APPLIES.  THE SHARES REPRESENTED BY THIS
                    CERTIFICATE MAY ONLY BE TRANSFERRED IN
                    ACCORDANCE WITH THE TERMS OF AN AGREEMENT DATED
                    ___________ BETWEEN THE REGISTERED HOLDER
                    HEREOF AND BUTTERFLY, INC., A COPY OF WHICH
                    AGREEMENT IS ON FILE AT THE PRINCIPAL OFFICES
                    OF BUTTERFLY, INC."


                    E.   I also understand that there will be
          placed on the certificates for the Parent Securities
          issued to me or any substitutions therefor, a legend
          stating in substance: 

                    F.   I also understand that unless the transfer
          by me of my Parent Securities has been registered under
          the Act or is a sale made in conformity with the
          provisions of Rule 145, Parent reserves the right to put
          the following legend on the certificates issued to my
          transferee:

                    "THE SHARES REPRESENTED BY THIS CERTIFICATE
                    HAVE NOT BEEN REGISTERED UNDER THE SECURITIES
                    ACT OF 1933 AND WERE ACQUIRED FROM A PERSON WHO
                    RECEIVED SUCH SHARES IN A TRANSACTION TO WHICH
                    RULE 145 PROMULGATED UNDER THE SECURITIES ACT
                    OF 1933 APPLIES.  THE SHARES HAVE BEEN ACQUIRED
                    BY THE HOLDER NOT WITH A VIEW TO, OR FOR RESALE
                    IN CONNECTION WITH, ANY DISTRIBUTION THEREOF
                    WITHIN THE MEANING OF THE SECURITIES ACT OF
                    1933 AND MAY NOT BE SOLD, PLEDGED OR OTHERWISE
                    TRANSFERRED EXCEPT IN ACCORDANCE WITH AN
                    EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF
                    THE SECURITIES ACT OF 1933."

                    It is understood and agreed that the legends
          set forth in paragraphs E and F above shall be removed by
          delivery of substitute certificates without such legend
          if such legend is not required for purposes of the Act or
          this Agreement.


                    Execution of this letter should not be
          considered an admission on my part that I am an
          "affiliate" of U.S. Healthcare as described in the first
          paragraph of this letter or as a waiver of any rights I
          may have to object to any claim that I am such an
          affiliate on or after the date of this letter. 

                                             Very truly yours,

                                             ______________________
                                             Name:

          Accepted this ____ day of 
          ____________, 1996 by 
          BUTTERFLY, INC.

          By:  _____________________________
               Name:
               Title


                                                        EXHIBIT B-2

                           FORM OF AFFILIATE LETTER
                                   (Aetna)

          Butterfly, Inc.
          [address]
          [address]

          Ladies and Gentlemen:

                    I have been advised that as of the date of this
          letter I may be deemed to be an "affiliate" of Aetna Life
          and Casualty Company, a Connecticut insurance corporation
          ("AETNA"), as the term "affiliate" is defined for
          purposes of paragraphs (c) and (d) of Rule 145 of the
          rules and regulations (the "RULES AND REGULATIONS") of
          the Securities and Exchange Commission (the "COMMISSION")
          under the Securities Act of 1933, as amended (the 
          "ACT").  Pursuant to the terms of the Agreement and Plan
          of Merger dated as of March 30, 1996, (the "AGREEMENT")
          among Aetna, U.S. Healthcare, Inc., a Pennsylvania
          corporation ("U.S. HEALTHCARE"), Butterfly, Inc., a
          Connecticut corporation ("PARENT"), Antelope Sub, Inc., a
          Connecticut corporation and a wholly owned subsidiary of
          Parent ("AETNA SUB") and New Merger Corporation, a
          Pennsylvania corporation and wholly owned subsidiary of
          Parent, Aetna will be merged with and into Aetna Sub with
          Aetna to be the survivor in the merger (the "AETNA SUB
          MERGER").

                    As a result of the Aetna Sub Merger, I will
          receive shares of Common Stock, par value $1.00 per
          share, of Parent (the "PARENT SECURITIES") in exchange
          for shares owned by me of Common Stock, without par
          value, of Aetna.

                    I represent, warrant and covenant to Parent
          that as of the date I receive any Parent Securities as a
          result of the Aetna Sub Merger:

                    A.   I shall not make any sale, transfer or
          other disposition of the Parent Securities in violation
          of the Act or the Rules and Regulations.

                    B.   I have carefully read this letter and the
          Agreement and discussed the requirements of such
          documents and other applicable limitations upon my
          ability to sell, transfer or otherwise dispose of the
          Parent Securities to the extent I felt necessary with my
          counsel or counsel for Aetna.

                    C.   I have been advised that the issuance of
          Parent Securities to me pursuant to the Aetna Sub Merger
          has been registered with the Commission under the Act on
          a Registration Statement on Form S-4.  However, I have
          also been advised that, since at the time the Aetna Sub
          Merger was submitted for a vote of the shareholders of
          Aetna, I may be deemed to have been an affiliate of Aetna
          and the distribution by me of the Parent Securities has
          not been registered under the Act, I may not sell,
          transfer or otherwise dispose of the Parent Securities
          issued to me in the Aetna Sub Merger unless (i) such
          sale, transfer or other disposition has been registered
          under the Act, (ii) such sale, transfer or under other
          disposition is made in conformity with Rule 145
          promulgated by the Commission under the Act, or (iii) in
          the opinion of counsel reasonably acceptable to Parent,
          or a "no action" letter obtained by the undersigned from
          the staff of the Commission, such sale, transfer or other
          disposition is otherwise exempt from registration under
          the Act.

                    D.  I understand that Parent is under no
          obligation to register the sale, transfer or other
          disposition of the Parent Securities by me or on my
          behalf under the Act or to take any other action
          necessary in order to make compliance with an exemption
          from such registration available.

                    E.  I also understand that there will be placed
          on the certificates for the Parent Securities issued to
          me or any substitutions therefor, a legend stating in
          substance: 

                    "THE SHARES REPRESENTED BY THIS CERTIFICATE
                    WERE ISSUED IN A TRANSACTION TO WHICH RULE 145
                    PROMULGATED UNDER THE SECURITIES ACT OF 1933
                    APPLIES.  THE SHARES REPRESENTED BY THIS
                    CERTIFICATE MAY ONLY BE TRANSFERRED IN
                    ACCORDANCE WITH THE TERMS OF AN AGREEMENT DATED
                    ___________ BETWEEN THE REGISTERED HOLDER
                    HEREOF AND BUTTERFLY, INC., A COPY OF WHICH
                    AGREEMENT IS ON FILE AT THE PRINCIPAL OFFICES
                    OF BUTTERFLY, INC."

                    F.  I also understand that unless the transfer
          by me of my Parent Securities has been registered under
          the Act or is a sale made in conformity with the
          provisions of Rule 145, Parent reserves the right to put
          the following legend on the certificates issued to my
          transferee:


                    "THE SHARES REPRESENTED BY THIS CERTIFICATE
                    HAVE NOT BEEN REGISTERED UNDER THE SECURITIES
                    ACT OF 1933 AND WERE ACQUIRED FROM A PERSON WHO
                    RECEIVED SUCH SHARES IN A TRANSACTION TO WHICH
                    RULE 145 PROMULGATED UNDER THE SECURITIES ACT
                    OF 1933 APPLIES.  THE SHARES HAVE BEEN ACQUIRED
                    BY THE HOLDER NOT WITH A VIEW TO, OR FOR RESALE
                    IN CONNECTION WITH, ANY DISTRIBUTION THEREOF
                    WITHIN THE MEANING OF THE SECURITIES ACT OF
                    1933 AND MAY NOT BE SOLD, PLEDGED OR OTHERWISE
                    TRANSFERRED EXCEPT IN ACCORDANCE WITH AN
                    EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF
                    THE SECURITIES ACT OF 1933."

                    It is understood and agreed that the legends
          set forth in paragraphs E and F above shall be removed by
          delivery of substitute certificates without such legend
          if such legend is not required for purposes of the Act or
          this Agreement.

                    Execution of this letter should not be
          considered an admission on my part that I am an
          "affiliate" of Aetna as described in the first paragraph
          of this letter or as a waiver of any rights I may have to
          object to any claim that I am such an affiliate on or
          after the date of this letter. 

                                             Very truly yours,

                                             ______________________
                                             Name:

          Accepted this ____ day of 
          ____________, 1996 by 
          BUTTERFLY, INC.

          By:  _____________________________
               Name:
               Title:








                                                     CONFORMED COPY

                               VOTING AGREEMENT

                    Agreement dated as of March 30, 1996 among
          Leonard Abramson (the "PRINCIPAL SHAREHOLDER"), Aetna
          Life Insurance Company, a Connecticut insurance
          corporation, Aetna Life Insurance and Annuity Company, a
          Connecticut insurance corporation (collectively, the
          "OTHER SHAREHOLDERS").  Capitalized terms used but not
          defined herein shall have the meanings ascribed to such
          terms in the Merger Agreement (as defined below).

                    In consideration of the execution by Aetna Life
          and Casualty Company, a Connecticut insurance corporation
          ("AETNA"), of the Agreement and Plan of Merger dated as
          of March 30, 1996 (the "MERGER AGREEMENT") among Aetna,
          U.S. Healthcare, Inc., a Pennsylvania corporation ("U.S.
          HEALTHCARE"), Butterfly, Inc. ("PARENT"), a Connecticut
          corporation, New Merger Corporation, a Pennsylvania
          corporation, and Antelope Merger Sub, Inc., a Connecticut
          corporation, a copy of which is attached as Exhibit A
          hereto, and other good and valuable consideration,
          receipt of which is hereby acknowledged, the Principal
          Shareholder and the Other Shareholders hereby agree as
          follows:

               1.   Representations and Warranties of Principal
          Shareholder. The Principal Shareholder hereby represents
          and warrants to the Other Shareholders as follows:

                    (a)  Title.  As of the date hereof, the
          Principal Shareholder beneficially owns 1,818,755 shares
          (including 1,806,803 shares held in various trusts for
          the benefit of his children and grandchildren, but not
          including any stock options owned by him) of Common Stock
          ("COMMON STOCK"), par value $0.005 per share, of U.S.
          Healthcare and 14,441,955 shares of Class B Stock ("CLASS
          B STOCK"), par value $0.005 per share, of U.S. Healthcare
          (the shares of Class B Stock so owned by Principal
          Shareholder, the "CLASS B SHARES").  As of the date
          hereof, the Principal Shareholder holds options to
          purchase 450,000 shares of Common Stock, all of which
          will become exercisable upon execution and delivery of
          the Merger Agreement.  The Principal Shareholder holds no
          options to purchase Class B Stock and, except as set
          forth in this Section 1(a), as of the date hereof the
          Principal Shareholder does not (i) beneficially own any
          shares of any class or series of capital stock of U.S.
          Healthcare or any securities convertible into or
          exercisable for shares of any class or series of U.S.
          Healthcare's capital stock or (ii) have any rights to
          acquire any shares of any class or series of capital
          stock of U.S. Healthcare or any securities convertible
          into or exercisable for shares of any class of U.S.
          Healthcare's capital stock.  The Principal Shareholder
          owns the Class B Shares free and clear of all liens,
          claims, options, charges or other encumbrances.  The
          Class B Shares represent approximately 83.7% of the total
          voting power of U.S. Healthcare's capital stock as of the
          date hereof.

                    (b)  Right to Vote.  The Principal Shareholder
          has full legal power, authority and right to vote all
          Class B Shares in favor of approval and adoption of the
          Merger Agreement and the transactions contemplated by the
          Merger Agreement without the consent or approval of, or
          any other action on the part of, any other person or
          entity.  Without limiting the generality of the
          foregoing, except for this Agreement, the Principal
          Shareholder has not entered into any voting agreement
          with any person or entity with respect to any of the
          Class B Shares, granted any person or entity any proxy
          (revocable or irrevocable) or power of attorney with
          respect to any of the Class B Shares, deposited any of
          the Class B Shares in a voting trust or entered into any
          arrangement or agreement with any person or entity
          limiting or affecting the Principal Shareholder's legal
          power, authority or right to vote the Class B Shares in
          favor of the approval and adoption of the Merger
          Agreement or any of the transactions contemplated by the
          Merger Agreement.  As of the date of the U.S. Healthcare
          shareholders meeting to vote on approval and adoption of
          the Merger Agreement and, to the extent submitted to
          shareholders for approval, the transactions contemplated
          by the Merger Agreement, including any adjournment or
          postponement thereof (the "U.S. HEALTHCARE SHAREHOLDERS
          MEETING"), except for this Agreement, the Principal
          Shareholder will have full legal power, authority and
          right to vote all Class B Shares in favor of the approval
          and adoption of the Merger Agreement and the transactions
          contemplated by the Merger Agreement without the consent
          or approval of, or any other action on the part of, any
          other person or entity.  From and after the date hereof,
          the Principal Shareholder will not commit any act that
          could restrict or otherwise affect such legal power,
          authority and right to vote all Class B Shares in favor
          of the approval and adoption of the Merger Agreement and
          the transactions contemplated by the Merger Agreement. 
          Without limiting the generality of the foregoing, from
          and after the date hereof the Principal Shareholder will
          not enter into any voting agreement with any person or
          entity with respect to any of the Class B Shares, grant
          any person or entity any proxy (revocable or irrevocable)
          or power of attorney with respect to any of the Class B
          Shares, deposit any of the Class B Shares in a voting
          trust or otherwise enter into any agreement or
          arrangement limiting or affecting the Principal
          Shareholder's legal power, authority or right to vote the
          Class B Shares in favor of the approval and adoption of
          the Merger Agreement and the transactions contemplated by
          the Merger Agreement (other than this Agreement).

                    (c)  Authority.  The Principal Shareholder has
          full legal power, authority and right to execute and
          deliver, and to perform his obligations under, this
          Agreement.  This Agreement has been duly executed and
          delivered by the Principal Shareholder and constitutes a
          valid and binding agreement of the Principal Shareholder
          enforceable against the Principal Shareholder in
          accordance with its terms, subject to (i) bankruptcy,
          insolvency, moratorium and other similar laws now or
          hereafter in effect relating to or affecting creditors'
          rights generally and (ii) general principles of equity
          (regardless of whether considered in a proceeding at law
          or in equity).

                    (d)  Conflicting Instruments; No Transfer. 
          Neither the execution and delivery of this Agreement nor
          the performance by the Principal Shareholder of his
          agreements and obligations hereunder will result in any
          breach or violation of or be in conflict with or
          constitute a default under any term of (i) any agreement,
          judgment, injunction, order, decree, law, regulation or
          arrangement to which the Principal Shareholder is a party
          or by which the Principal Shareholder (or any of his
          assets) is bound, except for any such breach, violation,
          conflict or default which, individually or in the
          aggregate, would not impair or affect the Principal
          Shareholder's ability to cast all votes necessary to
          approve and adopt the Merger Agreement and the
          transactions contemplated by the Merger Agreement or (ii)
          the Articles of Incorporation of U.S. Healthcare.

               2.   Representations and Warranties of Other
          Shareholders.  Each Other Shareholder hereby represents
          and warrants to the Principal Shareholder that this
          Agreement has been duly authorized by all necessary
          corporate action on its part, has been duly executed and
          delivered by such Other Shareholder and is a valid and
          binding agreement of such Other Shareholder enforceable
          against such Other Shareholder in accordance with its
          terms, subject to (i) bankruptcy, insolvency,
          reorganization, fraudulent transfer, moratorium and other
          similar laws now or hereafter in effect relating to or
          affecting creditors' rights generally and the rights of
          creditors of insurance companies generally and (ii)
          general principles of equity (regardless of whether
          considered in a proceeding at law or in equity).

               3.   Restriction on Transfer.  The Principal
          Shareholder agrees that (other than pursuant to the
          Merger Agreement) he will not, and will not agree to, (i)
          sell, assign, dispose of, encumber, mortgage, hypothecate
          or otherwise transfer (collectively, "TRANSFER") any
          Class B Shares or any options, warrants or other rights
          to acquire Class B Stock to any person or entity or (ii)
          convert (or allow the conversion of) any Class B Shares
          into shares of Common Stock of U.S. Healthcare; provided
          that, notwithstanding clause (i), the Principal
          Shareholder shall be permitted to Transfer Class B Shares
          to any "Permitted Transferee" (as defined in U.S.
          Healthcare's Articles of Incorporation) if prior to and
          as a condition of such Transfer such Permitted Transferee
          enters into a written agreement with the Other
          Shareholders (in form and substance satisfactory to the
          Other Shareholders) agreeing to be bound by the terms of
          this Agreement binding on the Principal Shareholder.
           
               4.   Agreement to Vote of Principal Shareholder. 
          The Principal Shareholder hereby irrevocably and
          unconditionally agrees to vote or to cause to be voted
          all Class B Shares at the U.S. Healthcare Shareholders
          Meeting and at any other annual or special meeting of
          shareholders of U.S. Healthcare where such matters arise
          (a) in favor of the approval and adoption of the Merger
          Agreement and the transactions contemplated by the Merger
          Agreement and (b) against (i) approval of any proposal
          made in opposition to or in competition with the Mergers
          or any of the other transactions contemplated by the
          Merger Agreement, (ii) any merger, consolidation, sale of
          assets, business combination, share exchange,
          reorganization or recapitalization of U.S. Healthcare or
          any of its subsidiaries, with or involving any party
          other than Aetna, the Other Shareholders or one of their
          respective subsidiaries, (iii) any liquidation or winding
          up of U.S. Healthcare, (iv) any extraordinary dividend by
          U.S. Healthcare, (v) any change in the capital structure
          of U.S. Healthcare (other than pursuant to the Merger
          Agreement) and (vi) any other action that may reasonably
          be expected to impede, interfere with, delay, postpone or
          attempt to discourage the Mergers or the other
          transactions contemplated by the Merger Agreement or
          result in a breach of any of the covenants,
          representations, warranties or other obligations or
          agreements of U.S. Healthcare under the Merger Agreement
          which would materially and adversely affect U.S.
          Healthcare or its ability to consummate the transactions
          contemplated by the Merger Agreement.

               5.   Action in Principal Shareholder Capacity Only. 
          The Principal Shareholder makes no agreement or
          understanding herein as director or officer of U.S.
          Healthcare.  The Principal Stockholder signs solely in
          his capacity as a recordholder and beneficial owner of
          the Class B Shares, and nothing herein shall limit or
          affect any actions taken in his capacity as an officer or
          director of U.S. Healthcare.

               6.   Invalid Provisions.  If any provision of this
          Agreement shall be invalid or unenforceable under
          applicable law, such provision shall be ineffective to
          the extent of such invalidity or unenforceability only,
          without it affecting the remaining provisions of this
          Agreement. 

               7.   Executed in Counterparts.  This Agreement may
          be executed in counterparts each of which shall be an
          original with the same effect as if the signatures hereto
          and thereto were upon the same instrument.

               8.   Specific Performance.  The parties hereto agree
          that if for any reason the Principal Shareholder fails to
          perform any of his agreements or obligations under this
          Agreement irreparable harm or injury to the Other
          Shareholders and Aetna would be caused for which money
          damages would not be an adequate remedy.  Accordingly,
          the Principal Shareholder agrees that, in seeking to
          enforce this Agreement against the Principal Shareholder,
          the Other Shareholders and Aetna shall be entitled to
          specific performance and injunctive and other equitable
          relief.  The provisions of this Section 8 constitute the
          Other Shareholders' and Aetna's sole remedy in the event
          of a breach by the Principal Shareholder of any of his
          representations or warranties under this Agreement;
          provided that, with respect to the Principal
          Shareholder's agreements and obligations under this
          Agreement, the provisions of this Section 8 are without
          prejudice to any other rights or remedies, whether at law
          or in equity, that the Other Shareholders or Aetna may
          have against the Principal Shareholder for any failure to
          perform any of his agreements or obligations under this
          Agreement.

               9.   Governing Law.  This Agreement shall be
          governed by and construed in accordance with the laws of
          the Commonwealth of Pennsylvania without giving effect to
          the principles of conflicts of laws thereof.

               10.  Amendments; Termination.  (a)  This Agreement
          may not be modified, amended, altered or supplemented,
          except upon the execution and delivery of a written
          agreement executed by the parties hereto.

                    (b)  The provisions of this Agreement shall
          terminate upon the earliest to occur of (i) the
          consummation of the Mergers, (ii) the date which is 18
          months after the date hereof or (iii) the termination of
          the Merger Agreement if, but only if, the Merger
          Agreement is terminated solely for reasons that are not
          directly or indirectly related to the commencement of, or
          any Person's direct or indirect indication of interest in
          making, an Acquisition Proposal with respect to U.S.
          Healthcare.  

                    (c)  For purposes of this Agreement, the term
          "MERGER AGREEMENT" includes the Merger Agreement, as the
          same may be modified or amended from time to time;
          provided that no such amendment or modification amends or
          modifies the Merger Agreement in a manner such that the
          Merger Agreement, as so amended or modified, is less
          favorable to the Principal Shareholder in any material
          respect than is the Merger Agreement in effect on the
          date hereof.

               11.  Additional Shares.  If, after the date hereof,
          the Principal Shareholder acquires beneficial ownership
          of any shares of Class B Stock (any such shares,
          "ADDITIONAL SHARES"), including, without limitation, upon
          exercise of any option, warrant or right to acquire Class
          B Stock or through any stock dividend or stock split, the
          provisions of this Agreement (other than those set forth
          in Section 1) applicable to Class B Shares shall be
          applicable to such Additional Shares as if such
          Additional Shares had been Class B Shares as of the date
          hereof.  The provisions of the immediately preceding
          sentence shall be effective with respect to Additional
          Shares without action by any person or entity immediately
          upon the acquisition by the Principal Shareholder of
          beneficial ownership of such Additional Shares.

               12.  Action by Written Consent.  If, in lieu of the
          U.S. Healthcare Shareholders Meeting, shareholder action
          in respect of the Merger Agreement or any of the
          transactions contemplated by the Merger Agreement is
          taken by written consent, the provisions of this
          Agreement imposing obligations in respect of or in
          connection with the U.S. Healthcare Shareholders Meeting
          shall apply mutatis mutandis to such action by written
          consent.

               13.  Successors and Assigns.  The provisions of this
          Agreement shall be binding upon and inure to the benefit
          of the parties hereto and their respective legal
          successors (including, in the case of the Principal
          Shareholder or any other individual, any executors,
          administrators, estates, legal representatives and heirs
          of the Principal Shareholder or such individual) and
          permitted assigns; provided that no party may assign,
          delegate or otherwise transfer any of its rights or
          obligations under this Agreement without the consent of
          the Other Shareholders (in the case of the Principal
          Shareholder or any of his permitted assigns) or the
          Principal Shareholder (in the case of the Other
          Shareholders or any of their permitted assigns), except
          that the Other Shareholders' rights under this Agreement
          may be transferred to Aetna or any wholly-owned
          subsidiary of Aetna.  Without limiting the scope or
          effect of the restrictions on Transfer set forth in
          Section 3 hereof,  Principal Shareholder agrees that this
          Agreement and the obligations hereunder shall attach to
          the Class B Shares and shall be binding upon any person
          or entity to which legal or beneficial ownership of such
          Class B Shares shall pass, whether by operation of law or
          otherwise.



                    IN WITNESS WHEREOF, the parties hereto have
          executed this Agreement as of this 30th day of March,
          1996.

                                           /s/ Leonard Abramson  
                                        LEONARD ABRAMSON

                                        AETNA LIFE INSURANCE
          COMPANY

                                        By:    /s/ Richard Huber 
                                        Name:   Richard Huber
                                        Title:  Vice Chairman

                                        AETNA LIFE INSURANCE AND 
                                          ANNUITY COMPANY

                                        By:    /s/Susan Schechter
                                        Name:   Susan Schechter
                                        Title:  Secretary








                                                     CONFORMED COPY

                        REGISTRATION RIGHTS AGREEMENT

                    REGISTRATION RIGHTS AGREEMENT dated as of March
          30, 1996 between Butterfly, Inc., a Connecticut
          corporation (the "COMPANY") and Leonard Abramson (the
          "SHAREHOLDER").

                                  ARTICLE I

                                 DEFINITIONS

                    1.1.  Definitions.  The following terms, as
          used herein, have the following meanings:

                    "1933 ACT" means the Securities Act of 1933, as
          amended, and the rules and regulations thereunder.

                    "1934 ACT" means the Securities Exchange Act of
          1934, as amended and the rules and regulations
          thereunder.

                    "BUSINESS DAY" means any day except a Saturday,
          Sunday or other day on which commercial banks in New York
          are authorized by law to close.

                    "COMMISSION" means the Securities and Exchange
          Commission.

                    "COMMON STOCK" means the Company's Common
          Stock, par value $1.00 per share.

                    "MERGER AGREEMENT" means the Agreement and Plan
          of Reorganization dated as of the date hereof among
          Adonis, Inc., Antelope, Inc., the Company, Adonis Merger
          Sub, Inc. and Antelope Merger Sub, Inc.

                    "PERSON" means an individual, a corporation, a
          partnership, limited liability company, an association, a
          trust or other entity or organization, including a
          government or political subdivision or an agency or
          instrumentality thereof.

                    "PIGGYBACK REGISTRATION" means a Piggyback
          Registration as defined in Section 2.2.

                    "PREFERRED STOCK" means the Company's Class C
          Preferred Stock, par value $.01 per share.

                    "REGISTRABLE SECURITIES" means all shares of
          Common Stock and Preferred Stock owned by the
          Shareholder.

                    "SHELF REGISTRATION STATEMENT" means the Shelf
          Registration Statement as defined in Section 2.1.

                    "UNDERWRITER" means a securities dealer who
          purchases any Registrable Securities as principal and not
          as part of such dealer's market-making activities.

                                  ARTICLE II

                             REGISTRATION RIGHTS

                    2.1.  Shelf Registration. (a) The Company shall
          prepare and file with the Commission a shelf registration
          statement (as amended and supplemented from time to time,
          the "SHELF REGISTRATION STATEMENT") relating to the
          Registrable Securities in accordance with Rule 415 under
          the 1933 Act and will use its best efforts to cause such
          Shelf Registration Statement to be declared effective no
          later than the Merger Date (as defined in the Merger
          Agreement) and to keep such Shelf Registration Statement
          continuously effective and in compliance with the 1933
          Act and usable for resale of such Registrable Securities,
          for a period from the date on which the Commission
          declares such Shelf Registration Statement effective
          until the first date upon which the aggregate amount of
          Registrable Securities then owned by the Shareholder
          could be sold pursuant to Rule 145 under the 1933 Act
          within 15 trading days calculated in accordance with Rule
          144 of the 1933 Act as of such date.

                    (b)  If the aggregate proceeds from an offering
          of Registrable Securities pursuant to the Shelf
          Registration Statement are expected to be more than $100
          million and if Shareholder so elects, such offering may
          be in the form of an underwritten offering.  Shareholder
          shall select the managing Underwriters and any additional
          investment bankers and managers to be used in connection
          with such offering; provided that such managing
          Underwriters and additional investment bankers must be
          reasonably satisfactory to the Company.

                    2.2.  Piggyback Registration.  If the Company
          proposes to file a registration statement under the 1933
          Act with respect to an offering of Common Stock or
          Preferred Stock (i) for the Company's own account (other
          than a registration statement on Form S-4 or S-8 (or any
          substitute form that may be adopted by the Commission))
          or (ii) for the account of any of its holders of Common
          Stock or Preferred Stock, then the Company shall give
          written notice of such proposed filing to Shareholder as
          soon as practicable (but in no event less than 10 days
          before the anticipated filing date), and such notice
          shall offer Shareholder the opportunity to register such
          number of shares of Registrable Securities as Shareholder
          may request on the same terms and conditions as the
          Company's or such holder's Common Stock or Preferred
          Stock (a "PIGGYBACK REGISTRATION").

                    2.3.  Reduction of Offering.  Notwithstanding
          anything contained herein, if the managing Underwriter of
          an offering described in Section 2.2 delivers a written
          opinion to the Company that (i) the size of the offering
          that Shareholder, the Company and any other Persons
          intend to make or (ii) the combination of securities that
          Shareholder, the Company and such other Persons intend to
          include in such offering are such that the success of the
          offering would be materially and adversely affected, then
          (A) if the size of the offering is the basis of such
          Underwriter's opinion, the amount of Registrable
          Securities to be offered for the account of Shareholder
          shall be reduced to the extent necessary to reduce the
          total amount of securities to be included in such
          offering to the amount recommended by such managing
          Underwriter; provided that in the case of a Piggyback
          Registration, if securities are being offered for the
          account of Persons other than the Company, then the
          proportion by which the amount of such Registrable
          Securities intended to be offered for the account of
          Shareholder is reduced shall not exceed the proportion by
          which the amount of such securities intended to be
          offered for the account of such other Persons is reduced;
          and (B) if the combination of securities to be offered is
          the basis of such Underwriter's opinion, (x) the
          Registrable Securities to be included in such offering
          shall be reduced as described in clause (A) above
          (subject to the proviso in clause (A)), and (y) in the
          case of a Piggyback Registration, if the actions
          described in sub-clause (x) of this clause (B) would, in
          the judgment of the managing Underwriter, be insufficient
          substantially to eliminate the adverse effect that
          inclusion of the Registrable Securities requested to be
          included would have on such offering, such Registrable
          Securities will be excluded from such offering.



                                 ARTICLE III

                           REGISTRATION PROCEDURES

                   3.1.  Filings; Information.  In connection with
          the Shelf Registration Statement pursuant to Section 2.1
          hereof, the Company and Shareholder agree as follows:

                    (a)  Shareholder will notify Company at least
               10 days prior to making any offer or sale of any
               Registrable Securities pursuant to the Shelf
               Registration Statement.  The Company shall be
               entitled, by notifying Shareholder within 5 days of
               receiving the aforementioned notice from the
               Shareholder, to postpone or suspend for a reasonable
               period of time (in no event to exceed 75 days) the
               offering of any Registrable Securities if the
               Company shall determine in good faith that such
               offering will interfere with a pending or
               contemplated financing, merger, sale or acquisition
               of assets, recapitalization or other corporate
               action or policies of the Company.  If the Company
               elects to so postpone or suspend the offering of any
               Registrable Securities, the Company shall, to the
               extent necessary, amend or supplement the Shelf
               Registration Statement to permit the offering of
               Registrable Securities within 75 days of receiving
               the aforementioned notice from the Shareholder.

                    (b)  The Company will, if requested, prior to
               filing the Shelf Registration Statement or any
               amendment or supplement thereto, furnish to
               Shareholder and each applicable managing
               Underwriter, if any, without charge, copies thereof,
               and thereafter furnish to Shareholder and each such
               Underwriter, if any, without charge, such number of
               copies of such registration statement, amendment and
               supplement thereto (in each case including all
               exhibits thereto and documents incorporated by
               reference therein) and the prospectus included in
               such registration statement (including each
               preliminary prospectus) as Shareholder or each such
               Underwriter may reasonably request in order to
               facilitate the sale of the Registrable Securities.

                    (c)  After the filing of the Shelf Registration
               Statement, the Company will promptly notify
               Shareholder of any stop order issued or, to the
               Company's knowledge, threatened to be issued by the
               Commission and use its best efforts to prevent the
               entry of such stop order or to remove it if entered
               at the earliest possible date.

                    (d)  The Company will use its best efforts in
               cooperation with Shareholder and the Underwriters or
               agents, as the case may be, to qualify the
               Registrable Securities for offer and sale under such
               other securities or blue sky laws of such
               jurisdictions in the United States as Shareholder
               reasonably requests; provided that the Company will
               not be required to (i) qualify generally to do
               business in any jurisdiction where it would not
               otherwise be required to qualify but for this
               paragraph (d), (ii) subject itself to taxation in
               any such jurisdiction or (iii) consent to general
               service of process in any such jurisdiction.

                    (e)  The Company will as promptly as is
               practicable notify Shareholder, at any time when a
               prospectus relating to the sale of the Registrable
               Securities is required by law to be delivered in
               connection with sales by an Underwriter or dealer,
               of the occurrence of any event requiring the
               preparation of a supplement or amendment to such
               prospectus so that, as thereafter delivered to the
               purchasers of such Registrable Securities, such
               prospectus will not contain an untrue statement of a
               material fact or omit to state any material fact
               required to be stated therein or necessary to make
               the statements therein, in the light of the
               circumstances under which they were made, not
               misleading and shall as promptly as practicable make
               available to Shareholder and to the Underwriters any
               such supplement or amendment.  Shareholder agrees
               that, upon receipt of any notice from the Company of
               the occurrence of any event of the kind described in
               the preceding sentence, Shareholder will forthwith
               discontinue the offer and sale of Registrable
               Securities pursuant to the registration statement
               covering such Registrable Securities until receipt
               by Shareholder and the Underwriters of the copies of
               such supplemented or amended prospectus and, if so
               directed by the Company, Shareholder will deliver to
               the Company all copies, other than permanent file
               copies then in Shareholder's possession, of the most
               recent prospectus covering such Registrable
               Securities at the time of receipt of such notice.  

                    (f)  The Company will deliver to Shareholder
               and each Underwriter or agent participating in an
               offering pursuant to the Shelf Registration
               Statement, without charge, as many copies of each
               preliminary prospectus as Shareholder or such
               Underwriter or agent may reasonably request, and the
               Company hereby consents to the use of such copies
               for purposes permitted by the 1933 Act.  The Company
               will deliver to Shareholder and each Underwriter or
               agent participating in such offering, without
               charge, from time to time during the period when a
               prospectus is required to be delivered under the
               1933 Act, such number of copies of such prospectus
               (as supplemented or amended) as Shareholder or such
               Underwriter or agent may reasonably request.

                    (g)  The Company will comply with the 1933 Act
               and the rules and regulations of the Commission
               thereunder, and the 1934 Act and the rules and
               regulations of the Commission thereunder so as to
               permit the completion of the distribution of the
               Registrable Securities pursuant to the Shelf
               Registration Statement in accordance with the
               intended method or methods of distribution
               contemplated in the prospectus relating thereto.

                    (h)  Upon the request of Shareholder or the
               managing Underwriter or agent, as the case may be,
               or if required by the rules, regulations or
               instructions applicable to the registration form
               used by the Company, or by the 1933 Act or by any
               other rules and regulations thereunder in connection
               with the offering of Registrable Securities pursuant
               to the Shelf Registration Statement, the Company
               will prepare a prospectus supplement that complies
               with the 1933 Act and the rules and regulations of
               the Commission thereunder and that sets forth the
               aggregate amount of the Registrable Securities being
               sold, the name or names of any Underwriters or
               agents participating in the offering, the price at
               which the Registrable Securities are to be sold, any
               discounts, commissions or other items constituting
               compensation, and such other information as
               Shareholder or the managing Underwriter or agent, as
               the case may be, and the Company deem appropriate in
               connection with the offering of the Registrable
               Securities prior to its being used or filed with the
               Commission.

                    (i)  The Company may require the Shareholder to
               promptly furnish in writing to the Company such
               information regarding the distribution of the
               Registrable Securities as may be legally required in
               connection with such registration.

                    (j)  The Company will enter into customary
               agreements (including an underwriting agreement in
               customary form) and take such other actions as are
               reasonably required in order to expedite or
               facilitate the sale of such Registrable Securities.

                    (k)  The Company will furnish to Shareholder
               and to each Underwriter a signed counterpart,
               addressed to Shareholder or such Underwriter, of (i)
               an opinion or opinions of counsel to the Company and
               (ii) a comfort letter or comfort letters from the
               Company's independent public accountants, each in
               customary form and covering such matters of the type
               customarily covered by opinions or comfort letters,
               as the case may be, as Shareholder or the managing
               Underwriter reasonably requests.

                    (l)  The Company will make generally available
               to its security holders, as soon as reasonably
               practicable, an earnings statement covering a period
               of 12 months, beginning within three months after
               the effective date of the registration statement,
               which earnings statement shall satisfy the
               provisions of Section 11(a) of the 1933 Act and the
               rules and regulations of the Commission thereunder.

                    (m)  The Company will use its reasonable
               efforts to cause all such Registrable Securities to
               be listed on each securities exchange on which
               similar securities issued by the Company are then
               listed.

                    3.2.  Registration Expenses.  In connection
          with the Shelf Registration Statement and in connection
          with any Piggyback Registration, the Company shall pay,
          the following expenses incurred in connection with such
          registration: (i) filing fees with the Commission, (ii)
          fees and expenses of compliance with securities or blue
          sky laws (including reasonable fees and disbursements of
          counsel in connection with blue sky qualifications of the
          Registrable Securities), (iii) printing expenses, (iv)
          fees and expenses incurred in connection with the listing
          of the Registrable Securities, (v) fees and expenses of
          counsel and independent certified public accountants for
          the Company and (vi) the reasonable fees and expenses of
          any additional experts retained by the Company in
          connection with such registration.  The Shareholder shall
          pay any underwriting fees, discounts or commissions
          attributable to the sale of Registrable Securities and
          any out-of-pocket expenses of Shareholder.

                                  ARTICLE IV

                       INDEMNIFICATION AND CONTRIBUTION

                    4.1.  Indemnification by the Company.  The
          Company agrees to indemnify and hold harmless
          Shareholder, its officers and directors, and each Person,
          if any, who controls Shareholder within the meaning of
          either Section 15 of the 1933 Act or Section 20 of the
          1934 Act from and against any and all losses, claims,
          damages and liabilities caused by any untrue statement or
          alleged untrue statement of a material fact contained in
          any registration statement or prospectus relating to the
          Registrable Securities (as amended or supplemented if the
          Company shall have furnished any amendments or
          supplements thereto) or any preliminary prospectus, or
          caused by any omission or alleged omission to state
          therein a material fact required to be stated therein or
          necessary to make the statements therein not misleading,
          except insofar as such losses, claims, damages or
          liabilities are caused by any such untrue statement or
          omission or alleged untrue statement or omission based
          upon information, relating to Shareholder or the plan of
          distribution furnished in writing to the Company by or on
          behalf of Shareholder expressly for use therein; provided
          that the foregoing indemnity agreement with respect to
          any preliminary prospectus shall not inure to the benefit
          of Shareholder if a copy of the most current prospectus
          at the time of the delivery of the Registrable Securities
          was not provided to purchaser and such current prospectus
          would have cured the defect giving rise to such loss,
          claim, damage or liability and was in fact previously
          furnished to the Shareholder and the managing
          Underwriters, if any, in quantities sufficient to deliver
          the same to all such purchasers.  The Company also agrees
          to indemnify any Underwriters of the Registrable
          Securities, their officers and directors and each person
          who controls such Underwriters on substantially the same
          basis as that of the indemnification of Shareholder
          provided in this Section 4.1.

                    4.2.  Indemnification by Shareholder. 
          Shareholder agrees to indemnify and hold harmless the
          Company, its officers and directors, and each Person, if
          any, who controls the Company within the meaning of
          either Section 15 of the 1933 Act or Section 20 of the
          1934 Act to the same extent as the foregoing indemnity
          from the Company to Shareholder, but only with reference
          to information relating to Shareholder or the plan of
          distribution furnished in writing by or on behalf of
          Shareholder expressly for use in any registration
          statement or prospectus relating to the Registrable
          Securities, or any amendment or supplement thereto, or
          any preliminary prospectus.  Shareholder also agrees to
          indemnify and hold harmless any Underwriters of the
          Registrable Securities, their officers and directors and
          each person who controls such Underwriters on
          substantially the same basis as that of the
          indemnification of the Company provided in this Section
          4.2.

                    4.3.  Conduct of Indemnification Proceedings. 
          In case any proceeding (including any governmental
          investigation) shall be instituted involving any Person
          in respect of which indemnity may be sought pursuant to
          Section 4.1 or Section 4.2, such Person (the "INDEMNIFIED
          PARTY") shall promptly notify the Person against whom
          such indemnity may be sought (the "INDEMNIFYING PARTY")
          in writing and the Indemnifying Party, upon the request
          of the Indemnified Party, shall retain counsel reasonably
          satisfactory to such Indemnified Party to represent such
          Indemnified Party and any others the Indemnifying Party
          may designate in such proceeding and shall pay the fees
          and disbursements of such counsel related to such
          proceeding.  In any such proceeding, any Indemnified
          Party shall have the right to retain its own counsel, but
          the fees and expenses of such counsel shall be at the
          expense of such Indemnified Party unless (i) the
          Indemnifying Party and the Indemnified Party shall have
          mutually agreed to the retention of such counsel or (ii)
          the named parties to any such proceeding (including any
          impleaded parties) include both the Indemnified Party and
          the Indemnifying Party and representation of both parties
          by the same counsel would be inappropriate due to actual
          or potential differing interests between them.  It is
          understood that the Indemnifying Party shall not, in
          connection with any proceeding or related proceedings in
          the same jurisdiction, be liable for the fees and
          expenses of more than one separate firm of attorneys (in
          addition to any local counsel) at any time for all such
          Indemnified Parties, and that all such fees and expenses
          shall be reimbursed as they are incurred.  In the case of
          any such separate firm for the Indemnified Parties, such
          firm shall be designated in writing by the Indemnified
          Parties.  The Indemnifying Party shall not be liable for
          any settlement of any proceeding effected without its
          written consent, but if settled with such consent, or if
          there be a final judgment for the plaintiff, the
          Indemnifying Party shall indemnify and hold harmless such
          Indemnified Parties from and against any loss or
          liability (to the extent stated above) by reason of such
          settlement or judgment.

                    4.4.  Contribution.  If the indemnification
          provided for in this Article IV is unavailable to an
          Indemnified Party in respect of any losses, claims,
          damages or liabilities referred to herein, then in lieu
          of such indemnification (i) as between the Company, on
          the one hand, and the Shareholder, on the other hand, the
          Company and Shareholder shall contribute to the aggregate
          losses, liabilities, claims, damages and expenses of the
          nature contemplated by such indemnity incurred by the
          Company and Shareholder, as incurred, in such proportion
          as is appropriate to reflect the relative fault of the
          Company, on the one hand, and of Shareholder, on the
          other hand, in connection with the statements or
          omissions which resulted in such losses, liabilities,
          claims, damages or expenses, as well as any other
          relevant equitable considerations and (ii) as between the
          Company and the Shareholder, on the one hand, and the
          Underwriters or agents, on the other hand, the Company,
          Shareholder, Underwriters and agents shall contribute to
          such aggregate losses, liabilities, claims, damages and
          expenses in proportion such that (x) the Underwriters and
          agents are responsible for that portion represented by
          the percentage that the underwriting discounts and
          commissions for the offering appearing on the cover page
          of the relevant prospectus (or, if not set forth on the
          cover page, that are applicable to the relevant offering)
          bear to the initial public offering price appearing on
          the cover page (or, if not set forth on the cover page,
          that are applicable to the offering), and (y) Shareholder
          and the Company are responsible to contribute pro rata,
          based upon the amount of net proceeds realized by each,
          in respect of the balance.

               The relative fault of the Company on the one hand
          and Shareholder on the other hand shall be determined by
          reference to, among other things, whether any such untrue
          or alleged untrue statement of a material fact or
          omission or alleged omission to state a material fact
          relates to information supplied by the Company or by
          Shareholder and the parties' relative intent, knowledge,
          access to information and opportunity to correct or
          prevent such statement or omission.

                    The Company and Shareholder agree that it would
          not be just and equitable if contribution pursuant to
          this Section 4.4 were determined by pro rata allocation
          or by any other method of allocation that does not take
          account of the equitable considerations referred to in
          the immediately preceding paragraph.  The amount paid or
          payable by an Indemnified Party as a result of the
          losses, claims, damages or liabilities referred to in the
          immediately preceding paragraph shall be deemed to
          include, subject to the limitations set forth above, any
          legal or other expenses reasonably incurred by such
          Indemnified Party in connection with investigating or
          defending any such action or claim.  Notwithstanding the
          provisions of this Article IV, no Underwriter shall be
          required to contribute any amount in excess of the amount
          by which the total price at which the Securities
          underwritten by it and distributed to the public were
          offered to the public exceeds the amount of any damages
          which such Underwriter has otherwise been required to pay
          by reason of such untrue or alleged untrue statement or
          omission or alleged omission, and Shareholder shall not
          be required to contribute any amount in excess of the
          amount by which the net proceeds of the offering (before
          deducting expenses) received by Shareholder exceeds the
          amount of any damages which Shareholder has otherwise
          been required to pay by reason of such untrue or alleged
          untrue statement or omission or alleged omission.  No
          person guilty of fraudulent misrepresentation (within the
          meaning of Section 11(f) of the 1933 Act) shall be
          entitled to contribution from any Person who was not
          guilty of such fraudulent misrepresentation.

                                  ARTICLE V

                                MISCELLANEOUS

                    5.1.  Participation in Underwritten
          Registrations.  No Person may participate in any
          underwritten registered offering contemplated hereunder
          unless such Person (a) agrees to sell its securities on
          the basis provided in any underwriting arrangements
          approved by the Persons entitled hereunder to approve
          such arrangements and (b) completes and executes all
          questionnaires, powers of attorney, underwriting
          agreements and other documents reasonably required under
          the terms of such underwriting arrangements and these
          Registration Rights.

                    5.2.  Rule 144.  The Company covenants that it
          will file any reports required to be filed by it under
          the 1933 Act and the 1934 Act and that it will take such
          further action as Shareholder may reasonably request to
          the extent required from time to time to enable
          Shareholder to sell Registrable Securities without
          registration under the 1933 Act within the limitation of
          the exemptions provided by Rule 144 under the 1933 Act,
          as such Rule may be amended from time to time, or any
          similar rule or regulation hereafter adopted by the
          Commission.  Upon the request of Shareholder, the Company
          will deliver to Shareholder a written statement as to
          whether it has complied with such reporting requirements.

                    5.3.  Holdback Agreements.  Shareholder agrees
          not to offer, sell, contract to sell or otherwise dispose
          of any Registrable Securities, or any securities
          convertible into or exchangeable or exercisable for such
          securities, including any sale pursuant to Rule 144 under
          the 1933 Act, during the 14 days prior to, and during the
          90-day period beginning on, the effective date of a
          registration statement for any shares of Common Stock or
          Preferred Stock.

                    5.4.  Transfer of Registration Rights.  None of
          the rights of Shareholder under this Agreement shall be
          assignable by Shareholder, except to "Permitted
          Transferees" as defined under the Articles of
          Incorporation of Adonis.

                    5.5.  Notices.  All notices, requests and other
          communications to either party hereunder shall be in
          writing (including telecopy or similar writing) and shall
          be given,

                    if to the Company, to:


                         Butterfly, Inc.
                         c/o Aetna Life and Casualty Company
                         151 Farmington Avenue
                         Hartford, CT 06156-7505
                         Telecopier: 860-549-6755
                         Attention:  Richard L. Huber
                                     Vice Chairman

                    and

                         Butterfly, Inc.
                         c/o U.S. Healthcare, Inc.
                         980 Jolly Road
                         P.O. Box 1109
                         Blue Bell, PA 19422
                         Telecopier: 215-283-6401
                         Attention:  David Simon

                    with a copy to:

                         David L. Caplan
                         Davis Polk & Wardwell
                         450 Lexington Avenue
                         New York, New York  10017
                         Telecopy:  (212) 450-4800



                    if to Shareholder, to:

                         Leonard Abramson
                         c/o U.S. Healthcare, Inc.
                         980 Jolly Road
                         P.O. Box 1109
                         Blue Bell, PA 19422
                         Telecopier: 215-283-6858

                    with a copy to:
           
                         Howard S. Godwin, Jr.
                         Brown & Wood
                         One World Trade Center
                         New York, New York  10048
                         Telecopy: (212) 839-5599

          or such other address or telecopier number as such party
          may hereafter specify for the purpose by notice to the
          other party hereto.  Each such notice, request or other
          communication shall be effective when delivered at the
          address specified in this Section 5.5.

                    5.6.  Amendments; No Waivers.

                    (a)  Any provision of this Agreement may be
          amended or waived if, and only if, such amendment or
          waiver is in writing and signed, in the case of an
          amendment, by Shareholder and the Company, or in the case
          of a waiver, by the party against whom the waiver is to
          be effective.

                    (b)  No failure or delay by any party in
          exercising any right, power or privilege hereunder shall
          operate as a waiver thereof nor shall any single or
          partial exercise thereof preclude any other or future
          exercise thereof or the exercise of any other right,
          power or privilege.  The rights and remedies herein
          provided shall be cumulative and not exclusive of any
          rights or remedies provided by law.

                    5.7.  Successors and Assigns.  The provisions
          of this Agreement shall be binding upon and inure to the
          benefit of the parties hereto and their respective
          successors and assigns.  Neither this Agreement nor any
          provision hereof is intended to confer upon any Person
          other than the parties hereto any rights or remedies
          hereunder.

                    5.8.  Counterparts; Effectiveness.  This
          Agreement may be signed in any number of counterparts,
          each of which shall be an original, with the same effect
          as if the signatures thereto and hereto were upon the
          same instrument.  This Agreement shall become effective
          when each party hereto shall have received a counterpart
          hereof signed by the other party hereto.

                    5.9.  Entire Agreement.  This Agreement
          constitutes the entire agreement between the parties with
          respect to the subject matter hereof and supersede all
          prior agreements, understandings and negotiations, both
          written and oral, between the parties with respect
          thereto.  No representation, inducement, promise,
          understanding, condition or warranty not set forth herein
          or therein has been made or relied upon by any of the
          parties hereto.

                    5.10.  Governing Law.  This Agreement shall be
          construed in accordance with and governed by the laws of
          the State of New York, without regard to the conflicts of
          law rules of such state.


                    IN WITNESS WHEREOF, the parties hereto have
          caused this Agreement to be duly executed as of the day
          and year first above written.

                                        BUTTERFLY, INC.

                                        By:    /s/ Richard Huber 
                                        Name:   Richard Huber
                                        Title:  Vice President

                                        /s/ Leonard Abramson   
                                        LEONARD ABRAMSON







                                  AGREEMENT

                    AGREEMENT, dated as of March 30, 1996, by and
          between Butterfly, Inc., a Connecticut corporation (the
          "Company"), and Leonard Abramson ("Consultant").

                    WHEREAS, Consultant is the founder, principal
          executive officer and a shareholder of U.S. Healthcare,
          Inc., a Pennsylvania corporation ("U.S. Healthcare"); and

                    WHEREAS, U.S. Healthcare, the Company, Aetna
          Life and Casualty Company, a Connecticut insurance corpo-
          ration, New Merger Corporation, a Pennsylvania corpora-
          tion, and Antelope Sub, Inc., a Connecticut corporation,
          contemporaneously herewith have entered into an Agreement
          and Plan of Merger (the "Merger Agreement"); and

                    WHEREAS, due to the highly competitive nature
          of the business of the Company and in order for the
          Company to operate its business following the consumma-
          tion of the transactions contemplated by the Merger
          Agreement, the Company desires to enter into a non-compe-
          tition agreement with Consultant on the terms and condi-
          tions hereinafter set forth in this Agreement; and

                    WHEREAS, the Company acknowledges the singular
          contribution of Consultant in having developed and ex-
          panded the business of U.S. Healthcare and in its conse-
          quent success and, accordingly, desires to retain the
          expertise and advisory services of Consultant and, to
          that end, desires to enter into an independent consulting
          agreement with him to become effective upon the consumma-
          tion of the transaction contemplated by the Merger Agree-
          ment, upon the terms and conditions herein set forth; and

                    WHEREAS, Consultant desires to serve as an
          independent consultant for the Company upon such terms
          and conditions; and

                    NOW THEREFORE, in consideration of the premises
          and the mutual agreements set forth below, the parties
          agree as follows:

               1.   Cancellation of Prior Agreement.  It is agreed
          that subject to, and effective upon, the consummation of
          the transactions contemplated by the Merger Agreement
          ("Merger Date"), the employment agreement dated as of
          January 1, 1993 between U.S. Healthcare and Consultant
          (other than those provisions relating to compensation
          payable upon termination of such Agreement) shall be
          cancelled and superseded by this Agreement.

               2.   Term.  The initial term of this Agreement shall
          be for a period of five years commencing on the Merger
          Date and ending on the fifth anniversary of the Merger
          Date (the "Initial Term").  Commencing on the fourth
          anniversary of the Merger Date and on each such subse-
          quent anniversary, the Term shall automatically be ex-
          tended for one additional year unless, not later than 180
          days prior to such anniversary, the Company or Consultant
          shall have given notice that the Term of this Agreement
          will not be extended.  The Initial Term together with any
          extensions thereof shall be referred to in this Agreement
          as the "Term of this Agreement."  The period commencing
          upon the Merger Date and ending on the earlier of the
          termination of this Agreement by its terms, or the termi-
          nation of Consultant's services pursuant to Section 7
          hereof, shall be referred to in this Agreement as the
          "Consulting Period". 

               3.   Duties and Status.  

                    (a)  Consultant agrees to make himself reason-
          ably available to the Chief Executive Officer of the
          Company during normal business hours (and upon reasonable
          advance notice) to provide advice on the strategic busi-
          ness activities, marketing strategies and public rela-
          tions efforts of U.S. Healthcare and the Company, includ-
          ing the Company's efforts to promote the history of U.S.
          Healthcare and Consultant's personal involvement in its
          development and success ("Consulting Services").  In the
          performance of his duties hereunder, Consultant shall not
          be required to devote any specified percentage of his
          business or professional time to the advisory services
          contemplated herein.  

                    (b)  During the Consulting Period, Consultant
          may engage in other employment or consulting work, or in
          any trade or business, for his own account or on behalf
          of any person or entity and may serve on any corporate,
          political, civic or charitable boards or committees,
          provided, in each case, such activities do not violate
          any of his obligations under Section 6.   

                    (c)  Consultant acknowledges that he is acting
          as an independent contractor, and that nothing in this
          Agreement shall be construed to create an employment
          relationship between the parties.  Consultant is not
          authorized to enter into contracts or agreements on
          behalf of the Company or to otherwise create obligations
          of the Company to third parties.  Consultant shall not be
          treated as an employee with respect to the services
          performed hereunder for Federal, state, or local tax
          purposes.  Consultant shall be solely responsible for,
          and shall file, on a timely basis, tax returns and pay-
          ments required to be filed with, or made to, any Federal
          or state, or local tax authority with respect to his
          performance of Consulting Services under this Agreement. 
          Neither Federal, nor state, nor local income tax of any
          kind shall be withheld from, or paid by, the Company with
          respect to the Consulting Fee, as defined below in Sec-
          tion 4(a). 

               4.   Compensation.  In consideration of his avail-
          ability to provide Consulting Services and of the Con-
          sulting Services provided by him under this Agreement,
          Consultant shall be compensated as follows:

                    (a)  Consulting Fee.   The Company shall pay to
          Consultant, during the Term of this Agreement, a consult-
          ing fee of two million dollars ($2,000,000) per year
          ("Consulting Fee"), payable in equal monthly install-
          ments, in arrears,  during the Term of this Agreement. 

                    (b)  Welfare Benefits.  During the Term of this
          Agreement, as additional consideration for the provision
          by Consultant of the advisory services hereunder, the
          Company shall arrange to provide Consultant with life
          (including split dollar), disability, accident, and
          health insurance benefits substantially similar to those
          which Consultant is provided in his capacity as principal
          executive officer of U.S. Healthcare and is receiving as
          of the date of this Agreement, or the economic equivalent
          thereof.  Consultant shall not be eligible to participate
          in, or accrue or receive benefits under, any of the
          Company's employee compensation or benefit plans, poli-
          cies and programs. 

                    (c)  Expense Reimbursement.  During the Con-
          sulting Period, Consultant shall be entitled to receive
          prompt reimbursement of all reasonable out-of-pocket
          expenses properly incurred by him in connection with his
          duties under this Agreement, including reasonable expens-
          es for entertainment and travel, provided that such
          expenses are properly approved, documented and reported
          in accordance with the policies and procedures of the
          Company applicable at the time the expenses are in-
          curred.

                    (d)  Office and Secretarial Support.  During
          the Term of this Agreement, the Company shall furnish
          Consultant with the exclusive use of appropriate office
          space and full-time secretarial services commensurate
          with the office and services he was provided as principal
          executive officer of U.S. Healthcare at a site acceptable
          to Consultant not located in a U.S. Healthcare facility. 
          All furnishings and decorative items in the Consultant's
          office on the date hereof shall be relocated to such new
          office.

               5.   Additional Matters.  On the Merger Date the
          Company shall transfer, convey, and assign to Consultant
          (or to any person or entity designated in writing by
          Consultant) all its ownership rights and interests in,
          and title to, the Company-owned G-4 ("G-4") aircraft.  In
          addition, during the Term of this Agreement, the Company
          shall pay directly (or, at Consultant's election, shall
          reimburse Consultant for) any and all costs and expenses
          incurred in the operation and maintenance of the G-4 up
          to a maximum amount of two million dollars, including,
          without limitation, all costs and expenses associated
          with all maintenance and repairs of the G-4, all costs
          and expenses for fuel, insurance, airport and landing
          fees, and all costs and expenses associated with provid-
          ing Consultant with the services of duly licensed pilots,
          on a full-time basis, comparable in experience to those
          pilots employed by U.S. Healthcare on the day immediately
          preceding the Merger Date.  If the Internal Revenue
          Service or any state or local taxing authorities (indi-
          vidually and collectively referred to as "Taxing Authori-
          ty") takes the position that the benefits provided pursu-
          ant to the second sentence of this Section 5 during the
          Term of this Agreement results in the receipt of taxable
          income to Consultant, the Company shall pay Consultant an
          amount equal to the sum of (x) the aggregate Federal,
          state, and local income and employment taxes (and any
          penalties and interest thereon) imposed on Consultant as
          a direct result of the use of these benefits during the
          Term of this Agreement, (y) any costs reasonably incurred
          by Consultant (including reasonable attorneys' fees and
          expenses) directly resulting from Consultant's participa-
          tion in proceedings with any Taxing Authority relating to
          the tax consequences of the use of these benefits during
          the Term of this Agreement, and (z) the aggregate Feder-
          al, state, and local income and employment taxes imposed
          on Consultant with respect to the amounts payable hereun-
          der, including taxes payable under this clause (z) (col-
          lectively, the "Gross-Up Payment").  Subject to Section
          10 below, Consultant shall be responsible for all such
          taxes and costs arising out of the transaction referred
          to in the first sentence of this Section 5.

               6.   Confidential Information; Non-Competition;
          Company Property.  Consultant and the Company recognize
          that, due to the nature of his prior history with U.S.
          Healthcare and his independent consulting relationship
          with the Company, Consultant has had and will continue to
          have access to and an opportunity to develop confidential
          business information, proprietary information, and trade
          secrets relating to the business and operations of U.S.
          Healthcare and the Company.  Consultant acknowledges that
          such information is valuable to the business of the
          Company and that disclosure to, or use for the benefit
          of, any person or entity other than the Company or any
          affiliate of the Company, would cause substantial damage
          to the Company.  Consultant further acknowledges that the
          Consulting Services he provides to the Company include
          the duty to develop and maintain client, customer, em-
          ployee, supplier and other business relationships on
          behalf of the Company; and that access to and development
          of those close business relationships for the Company
          render his services special, unique and extraordinary. 
          In recognition that the good will and business relation-
          ships described herein are assets and part of the value
          being acquired pursuant to the Merger Agreement, and that
          loss of or damage to those relationships would destroy or
          diminish the value of the Company, Consultant agrees as
          follows:

                    6.1. Non-Competition.  During the Consulting
          Period and for a period of five years thereafter (the
          "Non-Competition Period"), and regardless of the reason
          Consultant's services are terminated, Consultant shall
          not engage in any of the following activities, either
          directly or indirectly (individually, or through or on
          behalf of another entity as owner, investor, director,
          partner, agent, employee, consultant, or in any other
          capacity):

                         (i) engage in any business which is, as of
          the time of any occurrence under this Section 6.1 (and,
          for the period after Consultant's Date of Termination,
          was, as of Consultant's Date of Termination), in competi-
          tion with any of the health care operations conducted
          directly or indirectly by the Company or any of its
          affiliates: (A) in the United States; or (B) in any other
          country (except Israel) where, as of the Merger Date, the
          Company or any of its affiliates, is engaged in any
          health care operations ("Competitive Business");

                         (ii)  contact, communicate with, solicit,
          or accept the business of any Company Client (as defined
          below) for the purpose of making arrangements to provide
          such Company Client with services of the type then or
          previously provided by the Company, except on behalf of
          and for the benefit of the Company;

                         (iii)  engage in any activity to interfere
          with, disrupt or damage the business of the Company or
          any affiliate; or 

                         (iv)  hire any Employee (as defined below)
          of the Company or any of its affiliates; or solicit,
          encourage, or engage in any activity to induce any Em-
          ployee of the Company or any of its affiliates to termi-
          nate employment with the Company or such affiliate, or to
          become employed by, or to enter into a business relation-
          ship with, any other person or entity.

                    Nothing herein, however, will prohibit Consul-
          tant from acquiring or holding not more than five percent
          of any class of publicly traded securities of any Compet-
          itive Business; provided that such securities entitle
          Consultant to no more than five percent of the total
          outstanding votes entitled to be cast by securityholders
          of such business in matters on which such securityholders
          are entitled to vote.  For purposes of the Non-Competi-
          tion Period of this Agreement, the term "Company Client"
          shall mean: (A) any person or entity who as of the date
          immediately preceding Consultant's Date of Termination:
          (i) is a supplier, customer or client of the Company or
          any of its affiliates; or (ii) during the 12 month period
          prior to Consultant's Date of Termination had been solic-
          ited by Consultant on behalf of the Company or any of its
          affiliates to provide or receive services as a supplier,
          client or customer of the Company or any of its affili-
          ates; and (B) any other supplier, client or customer of
          the Company or any of its affiliates, as the Company and
          Consultant shall mutually agree to in writing after
          Consultant's Date of Termination.  The term "Employee" as
          used in this Agreement means: (i) any employee or consul-
          tant of the Company or any of its affiliates, or (ii) any
          person or entity who, within 12 months prior to
          Consultant's Date of Termination, had left the employment
          or service of the Company or any of its affiliates. 

                    6.2. Confidential Information.  During the Non-
          Competition Period, and at all times thereafter, Consul-
          tant shall maintain the confidentiality of all trade
          secrets and confidential or proprietary information of
          the Company or its affiliates and, except in furtherance
          of the business of the Company or its affiliates, he
          shall not directly or indirectly disclose any such infor-
          mation to any person or entity. 

                    6.3. Company Property.  Consultant acknowledges
          that all originals and copies of materials, records and
          documents relating to the business of U.S. Healthcare or
          the Company generated by him or coming into his posses-
          sion during his employment with U.S. Healthcare or during
          the Term of this Agreement are the sole property of the
          Company ("Company Property").  Upon the expiration of the
          Consulting Period, or upon request of the Company at any
          time, Consultant shall promptly deliver to the Company
          all copies of Company Property in his possession or
          control.

                    6.4. Company's Remedies for Breach.  Consultant
          acknowledges that if he breaches any provision of this
          Section 6, the Company or its affiliates will suffer
          irreparable injury.  It is therefore agreed that the
          Company (or its affiliates) shall have the right to
          enjoin any such breach, without posting any bond.  The
          existence of this right to injunctive, or other equitable
          relief, shall not limit any other rights or remedies the
          Company may have at law or in equity including, without
          limitation, the right to monetary, compensatory and
          punitive damages.  Consultant acknowledges and agrees
          that the provisions of this Section 6.4 are reasonable
          and necessary for the successful operation of the Compa-
          ny.

                    6.5  Compensation for Non-Competition Agree-
          ment.  In recognition of his singular contribution to the
          success of U.S. Healthcare and in consideration of the
          Consultant's agreement to abide by the restrictive cove-
          nants set forth above in Sections 6.1, 6.2 and 6.3 the
          Company shall pay Consultant (or his legal representative
          or estate, as the case may be), the following amounts,
          regardless of any termination of his services as a Con-
          sultant under this Agreement for any reason: (i) the sum
          of ten million dollars ($10,000,000), payable on the
          Merger Date; (ii) during the five-year period commencing
          on the Merger Date, two million dollars ($2,000,000) per
          year in equal quarterly installments, in arrears; and
          (iii) a final lump sum payment in the amount of five
          million dollars ($5,000,000), payable upon the Termina-
          tion or expiration of the Consulting Period.  The amounts
          payable under this Section 6.5 shall be payable half in
          cash and half in shares of common stock of the Company
          ("Company Common Stock") that has a Fair Market Value
          (calculated as described below) equal to half of the
          required payment.  The Fair Market Value of the Company
          Common Stock shall be determined on any date of determi-
          nation as follows: (A) if the Company Common Stock then
          trades on the New York Stock Exchange (or any other
          national securities exchange), the Fair Market Value of
          the Company Common Stock, on a per share basis, shall be
          the average of the last reported sale prices per share of
          the Company Common Stock (or, in the case of the first
          payment hereunder, the common stock of Aetna Life and
          Casualty Company) during the 15 trading days immediately
          preceding the date of determination on the New York Stock
          Exchange (or such other exchange as has the greatest
          trading volume in such security during such period); or
          (B) if the Company Common Stock is no longer traded on
          the New York Stock Exchange or any other national securi-
          ties exchange, then any amount payable to Consultant
          under this Section 6.5 shall be paid entirely in cash. 
          The Company and Consultant agree to enter into an agree-
          ment providing for certain registration rights to be
          provided to Consultant covering the Company Common Stock
          on terms and conditions that are mutually satisfactory to
          the Company and Consultant.

                    6.6. Survival and Independent Covenants.  The
          provisions of this Section 6 shall survive termination of
          this Agreement.  The covenants of Section 6 shall be
          construed as independent of any of the other provisions
          contained in this Agreement.

               7.   Termination of Consultant's Services.  The
          Consulting Period may be terminated during the Term of
          this Agreement as follows:

                    (a)  Death.  Consultant's services shall termi-
          nate automatically upon Consultant's death, which date
          shall be the Date of Termination.  

                    (b)  Disability.  If, as a result of
          Consultant's incapacity due to physical or mental illness
          (as determined by a medical doctor mutually agreed to by
          Consultant or his legal representative and the Company),
          Consultant shall have been absent from his duties for a
          period of six consecutive months and, within 30 days
          after written Notice of Termination (as defined in sub-
          section (f) of this Section 7) is given, shall not have
          returned to the performance of his duties hereunder
          ("Disability"), the Company may terminate Consultant's
          services hereunder.  In this event, the Date of Termina-
          tion shall be 30 days after Notice of Termination is
          given (provided that Consultant shall not have returned
          to the performance of his advisory services during such
          30 day period).

                    (c)  Cause.  The Board of Directors of the
          Company (the "Board") may terminate Consultant's services
          at any time for "Cause."  For purposes of this Agreement,
          "Cause" shall mean that the Board concludes, in good
          faith and after reasonable investigation that: (i) Con-
          sultant is convicted of a felony involving dishonesty
          with respect to the Company; or (ii) Consultant committed
          an act of fraud relating to the business of the Company. 
          If Consultant's services are terminated for Cause, the
          Date of Termination is the day that Consultant receives
          the Notice of Termination.

                    (d)  Without Cause.  The Board may terminate
          Consultant's services at any time without Cause, and the
          Date of Termination is the day that Consultant receives
          the Notice of Termination.

                    (e)  Resignation.  If Consultant resigns or
          otherwise terminates his services under this Agreement
          with the Company, the Date of Termination is the date of
          such resignation or termination as set forth in the
          Notice of Termination received by the Company.

                    (f)  Notice of Termination.  Any termination of
          Consultant's services by the Company or by Consultant,
          other than termination as a result of death, shall be
          communicated by Notice of Termination, which shall be in
          writing and shall set forth in detail the reasons there-
          for.

               8.   Payments Upon Termination.

                    (a)  Death, Disability, or Without Cause.  In
          the event the Consultant's services are terminated during
          the term of this Agreement by reason of Consultant's
          death or Disability (as defined above in Section 7(b)),
          or by the Company without Cause, the Company shall pay to
          Consultant or, in the event of his death, to Consultant's
          estate or, in the event of his Disability, to Consultant
          or his legal representative, within seven days of the
          Date of Termination: (i) all unpaid Consulting Fees
          accrued as of the Date of Termination; (ii) any accrued,
          unpaid compensation or benefits due to Consultant upon
          death or Disability under the terms of any benefit or
          insurance plan, policy or program of U.S. Healthcare or
          provided by the Company pursuant to Section 4(b) in
          effect at the time Consultant receives Notice of Termina-
          tion or at the time of death; and (iii) all Consulting
          Fees to which Consultant would have been entitled had
          Consultant continued working through the remainder of the
          Term of this Agreement, payable in a lump sum.  In addi-
          tion, the Company shall  (i) continue to make any pay-
          ments required by and in accordance with Section 6.5; and 
          (ii) provide for the continuation of Consultant's cover-
          age, at the Company's sole cost and expense, in any
          disability, accident or health insurance plans, policies
          or programs provided by the Company pursuant to Section
          4(b) through the remainder of the Term of this Agreement. 
          Except as so provided, no further benefits, compensation
          or rights continue to accrue to Consultant after the Date
          of Termination.  

                    (b)  For Cause or Resignation.  If Consultant's
          services are terminated for Cause, or Consultant resigns
          or terminates his services with the Company for any
          reason (other than the Company's breach of its obligation
          to make any payments due to Consultant under this Agree-
          ment), the Company shall pay to Consultant: (i) all
          unpaid Consulting Fees accrued and payable as of the Date
          of Termination; (ii) any other compensation or benefits
          due and payable to Consultant under the terms of any
          benefit or insurance plan, policy or program of provided
          by the Company pursuant to Section 4(b) in effect at the
          time the Notice of Termination is received; and (iii) in
          the event Consultant resigns or terminates his services
          hereunder, any amounts owed to Consultant pursuant to,
          and in accordance with Section 6.5.  Except as so provid-
          ed, no further benefits, compensation or rights continue
          to accrue to Consultant after the Date of Termination.

                    (c)  Mitigation.  Consultant shall not be
          required to mitigate any amounts payable pursuant to this
          Section 8.  

                    (d)  Expiration of the Term.  If Consultant's
          services by the Company terminate because either the
          Company or Consultant gives timely written notice to the
          other party in accordance with Section 2 above, then this
          Agreement (other than Section 6) shall terminate at the
          end of the Initial Term and, until that time, the rights
          and obligations of the Company and Consultant under this
          Agreement shall continue in full force and effect.

               9.   Indemnification; Attorneys' Fees.  The Company
          shall indemnify and hold Consultant harmless to the
          maximum extent permitted by the laws of the State of
          Connecticut and the Charter and By-Laws of the Company,
          as applicable: (i) against all costs, expenses, liabili-
          ties and legal fees which Consultant may incur in the
          discharge of his services under this Agreement; and (ii)
          against all judgments, fines, amounts paid in settlement
          and reasonable expenses, including attorneys' fees in-
          curred by Consultant, in connection with the defense, or
          as a result of any action or proceeding (or any appeal
          from any action or proceeding) in which Consultant is
          made or is threatened to be made a party by reason of the
          fact that he is or was an officer, director or agent of
          U.S. Healthcare or the Company, regardless of whether
          such action or proceeding is one brought by or in the
          right of the Company to procure a judgment in its favor. 
          The Company shall cause Consultant to be insured under
          the Company's Directors and Officers' Liability Insurance
          Policy as in effect from time to time or, if such Policy
          would not permit the Consultant to be covered thereby,
          the Company shall provide Consultant with an insurance
          policy providing comparable coverage.  In connection with
          any dispute or proceeding arising under this Agreement
          where Consultant is ultimately the substantially prevail-
          ing party, the Company shall promptly reimburse Consul-
          tant for all costs, including, without limitation, the
          reasonable attorneys' fees of any attorney of
          Consultant's choosing, incurred by Consultant in any such
          dispute or proceeding arising under this Agreement.  Any
          termination of Consultant's services, or of this Agree-
          ment, shall have no effect on the continuing operation of
          this Section 9.

               10.  Gross-Up For Excise Tax.  

                    (a)  Whether or not Consultant becomes entitled
          to any payments under Section 8 hereof, if any payments
          or benefits received or to be received by Consultant
          (including, without limitation, any payments or benefits
          received or to be received by Consultant pursuant to any
          U.S. Healthcare stock options), whether pursuant to
          Sections 4 or 5 hereof, or any other provision of this
          Agreement or any other plan, arrangement or agreement
          with the Company or U.S. Healthcare or its affiliates in
          effect on the date hereof in connection with the services
          rendered by Consultant to U.S. Healthcare or the Company
          (such payments or benefits, excluding the Gross-Up Pay-
          ment described herein, being hereinafter referred to as
          the "Total Payments"), will be subject to any excise tax
          imposed under section 4999 of the Internal Revenue Code
          of 1986, as amended (the "Excise Tax"), the Company shall
          pay to Consultant an additional amount (the "Gross-Up
          Payment"), such that the net amount retained by Consul-
          tant after deduction of any Excise Tax on the Total
          Payments and any Federal, state and local income and
          employment taxes and Excise Tax upon the Gross-Up Pay-
          ment, shall be equal to the Total Payments.

                    (b)  For purposes of determining whether any of
          the Total Payments will be subject to the Excise Tax and
          the amount of such Excise Tax: (i) all of the Total
          Payments shall be treated as "parachute payments" (within
          the meaning of section 280G(b) (2) of the Code) unless,
          in the opinion of tax counsel selected by the Company and
          reasonably acceptable to Consultant ("Tax Counsel"), a
          reasonable basis exists for determining that such pay-
          ments or benefits (in whole or in part) do not constitute
          parachute payments, including by reason of section
          280G(b) (4) (A) of the Code; (ii) all "excess parachute
          payments" within the meaning of section 280G(b) (1) of
          the Code shall be treated as subject to the Excise Tax
          unless, in the opinion of Tax Counsel, a reasonable basis
          exists for determining that such excess parachute pay-
          ments (in whole or in part) represent reasonable compen-
          sation for services actually rendered (within the meaning
          of section 280G(b) (4) (B) of the Code) in excess of the
          "base amount" (within the meaning of section 280G(b) (3)
          of the Code) allocable to such reasonable compensation,
          or are otherwise not subject to the Excise Tax; and (iii)
          the value of any noncash benefits or any deferred payment
          or benefit shall be determined by an independent auditor
          selected by the Company and reasonably acceptable to
          Consultant, in accordance with the principles of sections
          280G(d) (3) and (4) of the Code.  For purposes of deter-
          mining the amount of the Gross-Up Payment, Consultant
          shall be deemed to pay Federal income tax at the highest
          marginal rate of Federal income taxation in the calendar
          year in which the Gross-Up Payment is to be made, and
          state and local income taxes at the highest marginal rate
          of taxation in the state and locality of Consultant's
          residence on the Date of Termination (or if there is no
          Date of Termination, then the date on which the Gross-Up
          Payment is calculated for purposes of this Section 10),
          net of the maximum reduction in Federal income taxes
          which could be obtained from deduction of such state and
          local taxes.

                    (c)  In the event that the Excise Tax is final-
          ly determined to be less than the amount taken into
          account hereunder in calculating the Gross-Up Payment,
          Consultant shall repay to the Company, at the time that
          the amount of such reduction in Excise Tax is finally
          determined, the portion of the Gross-Up Payment attribut-
          able to such reduction (plus that portion of the Gross-Up
          Payment attributable to the Excise Tax and Federal,
          state, and local income and employment taxes imposed on
          the Gross-Up Payment being repaid by Consultant to the
          extent that such repayment results in a reduction in
          Excise Tax and/or a Federal, state, or local income or
          employment tax deduction) plus interest on the amount of
          such repayment at 120% of the rate provided in section
          1274(b) (2) (B) of the Code.  In the event that the
          Excise Tax is determined to exceed the amount taken into
          account hereunder in calculating the Gross-Up Payment
          (including by reason of any payment the existence or
          amount of which cannot be determined at the time of the
          Gross-Up Payment), the Company shall make an additional
          Gross-Up Payment in respect of such excess (plus any
          interest, penalties or additions payable to Consultant
          with respect to such excess) at the time that the amount
          of such excess is finally determined.  Consultant and the
          Company shall each reasonably cooperate with the other in
          connection with any administrative or judicial proceed-
          ings concerning the existence or amount of liability for
          Excise Tax with respect to the Total Payments.  

               11.  No Setoff.  The Company's obligations to make
          the payments provided for in this Agreement and otherwise
          to perform its obligations hereunder shall not be affect-
          ed by any setoff, counterclaim, recoupment, defense or
          other claim, right or action which the Company may have
          against Consultant. 

               12.  Compliance with Other Agreements.  Consultant
          represents and warrants to the Company that the execution
          of this Agreement by him and the performance of his
          obligations hereunder, will not conflict with, breach, or
          constitute a default under any agreement to which Consul-
          tant is a party or by which Consultant is bound.

               13.  Enforceability.  If any provision of this Agre-
          ement is determined by a court of competent jurisdiction
          to be not enforceable in the manner set forth in this
          Agreement, Consultant and the Company agree that it is
          the intention of the parties that such provision should
          be enforceable to the maximum extent possible under
          applicable law.  If any provisions of this Agreement are
          held to be invalid or unenforceable, such invalidation or
          unenforceability shall not affect the validity or en-
          forceability of any other provision of this Agreement (or
          any portion thereof). 

               14.  Governing Law.  This Agreement shall be gov-
          erned by and construed in accordance with the laws of the
          State of Connecticut, without giving effect to the con-
          flicts of laws principles thereof.

               15.  Amendments.  This Agreement may not be amended
          or modified except by a written agreement executed by
          Consultant and the Company (upon approval by the Board),
          or by their successors or legal representatives.

               16.  Notices.  All notices and other communications
          under this Agreement shall be in writing and shall be
          given by hand delivery to the other party or by regis-
          tered or certified mail, return receipt requested, post-
          age prepaid, addressed as follows:

                                   If to Consultant:

                                   Mr. Leonard Abramson
                                   c/o U.S. Healthcare
                                   980 Jolly Road
                                   Blue Bell, PA 19422

                                   With copies to:

                                   Howard G. Godwin, Jr., Esq.
                                   Brown & Wood
                                   One World Trade Center
                                   New York, NY 10048

                                   If to the Company:

                                   Aetna Life and Casualty Company
                                   151 Farmington Avenue
                                   Hartford, Connecticut 06156

                                   With copies to:

                                   David L. Caplan, Esq.
                                   Davis Polk & Wardwell
                                   450 Lexington Avenue
                                   New York, NY  10017

          or to such other address as either party shall have
          furnished to the other in writing in accordance with this
          Agreement.  Notices and communications shall be effective
          when actually received by the addressee.  

               17.  Waiver.  Consultant's or the Company's failure
          to insist upon strict compliance with any provision
          hereof shall not be deemed to be a waiver of that provi-
          sion, or of any other provision of this Agreement.  Any
          waiver by the Company shall not be effective unless
          approved by the Board and set forth in a writing signed
          by the Chief Executive Officer of the Company.

               18.  No Other Agreements.  This Agreement contains
          the entire understanding of the Company and Consultant
          with respect to the independent consulting relationship
          between the Company and Consultant, except as to benefit
          plans of U.S. Healthcare or provided by the Company
          pursuant to Section 4(b) which are governed by the terms
          thereof.  Any prior agreements, oral or written, and any
          prior representations are hereby superseded and are of no
          further force and effect.  Neither the Company nor Con-
          sultant has relied on any representations in connection
          with entering into this Agreement other than those ex-
          pressly set forth herein, and those set forth in the
          Merger Agreement. 

               19.  Cooperation.  Consultant agrees to give prompt
          written notice to the Company of any claim or injury
          relating to the Company, and to fully cooperate in good
          faith and to the best of his ability with the Company in
          connection with all pending, potential or future claims,
          investigations or actions which directly or indirectly
          relate to any transaction, event or activity about which
          Consultant may have knowledge because of his employment
          with U.S. Healthcare or his Consulting Services to the
          Company.  Such cooperation shall include all assistance
          that the Company, its counsel, or its representatives may
          reasonably request, including reviewing documents, meet-
          ing with counsel, providing factual information and
          material, and appearing or testifying as a witness.  If
          the Company requires such assistance from Consultant
          after the expiration of the Term of this Agreement, this
          Company shall reasonably compensate Consultant for his
          time based on a per diem rate derived, pro rata, from the
          Consulting Fee.

               20.  Binding Effect.  This Agreement shall be bind-
          ing upon and inure solely to the benefit of the parties
          hereto and their respective successors, permitted as-
          signs, heirs, and legal representatives, including any
          corporation or other business organization with which the
          Company may merge or consolidate.  Nothing in this Agree-
          ment, express or implied, is intended to confer upon any
          other person or entity any rights or remedies.  

               21.  Business Days.  If any action or payment is due
          on a day which is not a Business Day, as defined below,
          then such action or payment (without any additional
          interest) shall be made on the next Business Day.  For
          purposes of this Agreement, "Business Day" shall mean any
          day excluding Saturday, Sunday, and any day on which
          banking institutions close.  

               22.  Headings.  The captions of this Agreement are
          not part of the provisions hereof and shall have no force
          or effect.  

                    IN WITNESS WHEREOF, the parties have executed
          this Agreement as of the day and year first above written.

                                          /s/ Leonard Abramson     
                                          Leonard Abramson

                                          Butterfly, Inc.

                                          By:/s/ Ronald Compton    
                                              Name:  Ronald Compton
                                              Title: President







                             EMPLOYMENT AGREEMENT

                    AGREEMENT, dated as of March 30, 1996, by and
          between Joseph Sebastianelli (the "Executive") and U.S.
          Healthcare, Inc., a Pennsylvania corporation ("U.S.
          Healthcare" or the "Company").

                    WHEREAS, the Board of Directors of the Company
          (the "Board") and the Executive each desires that the
          Executive continue to furnish services to the Company on
          the terms and conditions hereinafter set forth; and

                    WHEREAS, the parties desire to enter into this
          agreement setting forth the terms and conditions of the
          continued employment of the Executive with the Company;

                    NOW, THEREFORE, in consideration of the
          premises and the mutual agreements set forth below, and
          intending to be legally bound hereby, the parties hereto
          hereby agree as follows:

                    1.  Employment.  The Company hereby agrees to
          employ the Executive, and the Executive hereby accepts
          such employment, on the terms and conditions hereinafter
          set forth.

                    2.  Term; Parties.  (a) Term.  The term of this
          Agreement (as extended from time to time, the "Term")
          shall commence on the date (the "Effective Date") of
          execution of the Agreement and Plan of Merger (the
          "Merger Agreement"), dated March 30, 1996, by and among
          the Company, Aetna Life and Casualty Company ("Aetna")
          and Butterfly, Inc. ("Parent"), and shall end on the
          fifth anniversary of the consummation of the merger
          contemplated by the Merger Agreement (the "Merger Date")
          or, if such merger is not consummated, the Effective
          Date, unless further extended as provided in this Section
          2 or sooner terminated in the event that Executive's
          employment is terminated pursuant to Section 6. 
          Commencing on the fifth anniversary of the Merger Date
          (or, if there is no Merger Date, on the fifth anniversary
          of the Effective Date) and on each such subsequent
          anniversary, the Term shall automatically be extended for
          one additional year unless, not later than 180 days prior
          to such anniversary, the Company or the Executive shall
          have given notice not to extend the Term.  The giving by
          the Company of a notice not to extend the Term shall not
          constitute a termination without Cause or a termination
          for Good Reason (each as defined in Section 6).

                    (b)  Parties.  On and after the Merger Date,
          this Agreement shall be assigned to and assumed by Parent
          and all references herein to the Company shall mean
          Parent.  On and after the Merger Date, to the extent that
          the Executive's employment is with U.S. Healthcare or
          Aetna, the obligation of the Company hereunder shall
          include the obligation to cause U.S. Healthcare or Aetna
          to act in accordance with the terms hereof.

                    3.  Position and Duties.  Prior to the Merger
          Date, the Executive shall serve as an employee of U.S.
          Healthcare with the title of Co-President and Chief
          Medical Administrative Officer of U.S. Healthcare, shall
          report directly to the Chief Executive Officer and shall
          be responsible, together with Mr. Cardillo (referred to
          herein, collectively, as the "Co-Presidents"), for all of
          the lines of business and operations of U.S. Healthcare
          (including but not limited to all HMO, POS, indemnity
          health insurance and other lines of business and
          operations, the "Business").  From and after the Merger
          Date, the Business shall also include all of the domestic
          (U.S.) lines of business and operations of Aetna Health
          Plans (including but not limited to all Health, Specialty
          Health and Group Insurance lines of business and
          operations) and the Executive shall assume the position
          of Co-President of the Business.  The Executive shall
          report directly and exclusively to the Chief Executive
          Officer of the Company, and the individuals who serve as
          the Chief Financial Officer, Chief Medical Officer,
          Senior Sales Officer and Chief Legal Officer of U.S.
          Healthcare as of the Effective Date shall report directly
          and exclusively to the Co-Presidents.  The Co-Presidents
          shall also select and appoint those other senior officers
          who will be reporting directly to the Co-Presidents and
          will be responsible for other areas of responsibility for
          the Business (including but not limited to Group
          Insurance, Information Technology, Operations, Sales,
          National Accounts, Behavioral Health, Dental, Pharmacy,
          Health Education and Human Resources), provided, however,
          that such appointments shall be made only in consultation
          with and with the approval of the Chief Executive Officer
          of the Company.  The Executive shall have such additional
          duties and responsibilities with respect to the Business
          as may be assigned to him by the Chief Executive Officer,
          provided that such duties and responsibilities are
          consistent with the Executive's position as Co-President
          and Chief Medical Administrative Officer of U.S.
          Healthcare.  During the Term, the Executive agrees to
          devote substantially all his full working time, attention
          and energies during normal business hours to the
          performance of his duties for the Company, provided that
          the Executive may continue to participate and engage in
          activities not associated with the Company consistent
          with the Executive's past practices at U.S. Healthcare.

                    4.  Place of Performance.  The principal place
          of employment and office of the Executive shall be in
          Blue Bell, Pennsylvania, or such other location as may be
          agreed to in writing by the Executive.

                    5.  Compensation and Related Matters.

                    (a)  Base Salary.  As compensation for the
          performance by the Executive of his duties hereunder, the
          Company shall pay the Executive a base salary at an
          annual rate that is no less than the Executive's annual
          salary rate for 1996, including any deferred compensation
          and interest or earnings on such year's deferred
          compensation under the Company's current deferred
          compensation program (such amount, as from time to time
          in effect, hereinafter referred to as "Base Salary"). 
          Base Salary shall be payable in accordance with U.S.
          Healthcare's normal payroll practices, shall be reviewed
          annually and may be increased upon such review.  Base
          Salary, once increased, may not be decreased.

                    (b)  Annual Bonus.  The Executive shall be
          entitled to an annual bonus upon the attainment by the
          Company, U.S. Healthcare and/or the Business of
          reasonable performance goals, established in accordance
          with the past practice of U.S. Healthcare.  The
          Executive's target bonus shall be equal to 80% of Base
          Salary, with appropriate increases or decreases upon the
          attainment of specified levels of Company, U.S.
          Healthcare and/or Business performance (such bonus
          hereinafter referred to as the "Annual Bonus"); provided,
          however, that with respect to fiscal year 1997, in no
          event shall the Annual Bonus be less than 100% of target. 
          If the Merger Date occurs during the fiscal year
          commencing in 1996, the Company shall pay to the
          Executive for such 1996 fiscal year 100% of the bonus
          which he would have received for the entire 1996 fiscal
          year as determined by U.S. Healthcare.

                    (c)  Sign-On Bonus.  Upon the Merger Date, the
          Company shall pay the Executive, in cash, an amount equal
          to the sum of (i) the Executive's then-current base
          salary (including deferred compensation and interest or
          earnings on such year's deferred compensation) and (ii)
          the aggregate value of the annual bonus paid or awarded
          (in cash and in shares of U.S. Healthcare common stock)
          to the Executive in respect of 1995, or, if the Merger
          Date is subsequent to December 31, 1996 and if the
          aggregate value of the annual bonus so paid or awarded to
          the Executive in respect of 1996 is higher, such 1996
          annual bonus (the sum of such amounts hereinafter
          referred to as the "Sign-On Bonus").

                    (d)  Stay Bonus.  The Executive shall be
          granted, as of the Merger Date, that number of restricted
          shares of common stock of Parent ("Parent Stock") which,
          when multiplied by the average closing price per share of
          Parent Stock on the ten trading dates immediately
          following the Merger Date, shall be equal in amount to
          the Sign-On Bonus (the "Restricted Stock Award").  The
          Restricted Stock Award shall be granted pursuant to a
          plan (i) that meets the requirements of Rule 16b-3
          promulgated under Section 16 of the Securities Exchange
          Act of 1934, as amended (the "Exchange Act"), (ii) the
          terms of which are acceptable to U.S. Healthcare and
          (iii) the shares of Company Stock reserved for issuance
          under which shall be registered in a timely manner on a
          Form S-8 (the "Plan").  Notwithstanding any provision of
          this Agreement to the contrary, the Restricted Stock
          Award shall become vested (i.e., all restrictions with
          respect thereto shall lapse) on the earliest to occur of
          (x) the second anniversary of the Merger Date, (y) a
          "change in control of Parent" (as defined in the Plan)
          following the Merger Date, or (z) upon termination of the
          Executive's employment by reason of death or Disability
          (as defined in Section 6 hereof), by the Company other
          than for Cause (as defined in Section 6 hereof) or by the
          Executive for Good Reason (as defined in Section 6
          hereof).  If the Executive's employment is terminated by
          the Executive without Good Reason or by the Company for
          Cause prior to the second anniversary of the Merger Date,
          the Restricted Stock Award shall be forfeited in full. 
          The Restricted Stock Award shall be subject to all other
          terms and conditions of the Plan, the rules and
          regulations thereunder, the applicable provisions of this
          Agreement and the document evidencing its terms and
          conditions reasonably acceptable to Executive.  The
          Restricted Stock Award is in addition to any other equity
          award made to the Executive under paragraph (e) of this
          Section 5 and shall not be offset against or reduce such
          award or any other award, benefit or amount due under
          this Agreement.

                    (e)  Future Equity Grants.  In addition to the
          Restricted Stock Award made pursuant to subsection (d) of
          this Section 6, the Executive shall from time to time be
          granted stock options and shares of restricted stock or
          other equity-based awards (collectively, "Equity Grants")
          on a basis no less favorable than such grants are made to
          similarly situated senior officers of the Company. 
          Without limiting the generality of the foregoing, if the
          Merger Date occurs after Parent has granted awards in
          respect of calendar year 1997, the Executive shall be
          entitled to receive an Equity Grant in respect of 1997. 

                    (f)  Expenses.  The Company shall reimburse the
          Executive for all reasonable business expenses, subject
          to the applicable policies and procedures of the Company
          then in force.

                    (g)  Vacation.  The Executive shall be entitled
          to 20 vacation days and that number of personal days and
          holidays as is consistent with U.S. Healthcare's current
          practices (including, with respect to up to the greater
          of 25 days or the number of days the Executive has
          accrued at the Effective Date, cash compensation in lieu
          thereof upon termination or expiration of this Agreement)
          or, if more favorable to the Executive, in accordance
          with the policies applicable generally to senior
          executives of the Company or any of its subsidiaries.

                    (h)  Services Furnished.  The Company shall
          furnish the Executive with appropriate office space and
          such other facilities and services as shall be suitable
          to the Executive's position and adequate for the
          performance of his duties as set forth in Section 3
          hereof and on a basis at least as favorable as in effect
          immediately prior to the Merger Date, such office space
          and other facilities and services to be furnished at the
          location set forth in Section 4 hereof.

                    (i)  Other Benefits.  The Company shall provide
          to the Executive such employee benefit plans and
          arrangements as are generally available to senior
          officers of the Company and its subsidiaries, including
          but not limited to retirement benefits, group life
          insurance, medical and dental insurance, and accident and
          disability insurance, which shall be provided on a basis
          reasonably comparable in the aggregate to those provided
          to him immediately prior to the Merger Date or, if more
          favorable to the Executive in the aggregate, to those
          provided to other senior officers of the Company and its
          subsidiaries.

                    (j)  Restrictions on Sale of Securities;
          Payment of Taxes.  From the date hereof to the earlier of
          the Merger Date or the date on which the transaction
          contemplated by the Merger Agreement is abandoned, the
          Executive agrees that he will not sell or otherwise
          dispose of any shares of the common stock of U.S.
          Healthcare ("U.S. Healthcare Stock"), including shares
          subject to option, except for the partial cash-out of
          such shares and options in connection with the
          transaction contemplated by the Merger Agreement.  During
          the one-year period following the Merger Date, the
          Executive agrees that, so long as he remains employed by
          the Company or any of its subsidiaries, he will not sell
          or otherwise dispose of any shares or option shares of
          Parent Stock.  Nothing herein shall prohibit the
          Executive from transferring any shares of U.S. Healthcare
          Stock or Parent Stock to a "Permitted Transferee," as
          defined in Article 5A.III of the U.S. Healthcare Articles
          of Incorporation.  In consideration of the Executive's
          agreement under this Section 5, the Company shall
          promptly reimburse the Executive for any and all income,
          wage and employment taxes (and any and all income and
          employment taxes on the reimbursement amount), payable by
          the Executive as the result of the acceleration of the
          vesting of restricted shares of U.S. Healthcare Stock on
          the Effective Date or as the result of the partial cash-
          out of shares of U.S. Healthcare Stock still subject to
          option on the Merger Date.  In no event shall Executive
          be reimbursed for any income, wage or employment taxes
          that result from the exercise of any options.

                    6.  Termination.  The Executive's employment
          hereunder may be terminated as follows:

                    (a)  Death.  The Executive's employment shall
          terminate upon his death, and the date of his death shall
          be the Date of Termination.

                    (b)  Disability.  If, as a result of the
          Executive's incapacity due to physical or mental illness
          (as determined by a medical doctor mutually agreed to by
          the Executive or his legal representative and the
          Company), the Executive shall have been absent from his
          duties hereunder on a full-time basis for the entire
          period of six consecutive months and, within thirty (30)
          days after written Notice of Termination (as defined in
          subsection (f) of this Section 6) is given, shall not
          have returned to the performance of his duties hereunder
          on a full-time basis ("Disability"), the Company may
          terminate the Executive's employment hereunder.  In this
          event, the Date of Termination shall be thirty (30) days
          after Notice of Termination is given (provided that the
          Executive shall not have returned to the performance of
          his duties on a full-time basis during such thirty (30)
          day period).

                    (c)  Cause.  The Company may terminate the
          Executive's employment in the event there occurs one or
          more of the following events that has not been cured (if
          curable) within thirty (30) days after written notice
          thereof has been given by the Company to the Executive
          ("Cause"); provided that the Company shall have delivered
          a written notice to the Executive within 120 days of its
          having actual knowledge of the occurrence of any of such
          events stating that the Company intends to terminate the
          Executive's employment for Cause and specifying the
          factual basis for such termination:

                         (i) the willful failure by the Executive
               to perform substantially the Executive's duties as
               an employee of the Company (other than due to
               physical or mental illness or after the delivery of
               a Notice of Termination for Good Reason by the
               Executive pursuant to subsection (f) of this Section
               6); 

                         (ii) the Executive's engaging in
               misconduct that is materially injurious to the
               Company or any subsidiary or any affiliate of the
               Company;

                         (iii) the Executive's having been
               convicted of, or entered a plea of nolo contendere
               to, a crime that constitutes a felony;

                         (iv) the material breach by the Executive
               of any written covenant or agreement not to compete
               with the Company or any subsidiary or any affiliate;
               or 

                         (v) the breach by the Executive of his
               duty of loyalty to the Company which shall include,
               without limitation (A) the disclosure by the
               Executive of any confidential information pertaining
               to the Company or any subsidiary or any affiliate of
               the Company, other than (x) in the ordinary course
               of the performance of his duties on behalf of the
               Company or (y) pursuant to a judicial or
               administrative subpoena from a court or governmental
               authority with jurisdiction over the matter in
               question, (B) the harmful interference by the
               Executive in the business or operations of the
               Company or any subsidiary or any affiliate of the
               Company, (C) any attempt by the Executive to induce
               any employee, insurance agent, insurance broker or
               broker-dealer of the Company or any subsidiary or
               any affiliate to be employed or perform services
               elsewhere, other than actions taken by the Executive
               that are intended to benefit the Company or any
               subsidiary or affiliate and do not benefit the
               Executive financially other than as an employee or
               stockholder of the Company, (D) any attempt by the
               Executive to solicit the trade of any customer or
               supplier, or prospective customer or supplier, of
               the Company on behalf of any person other than the
               Company or a subsidiary thereof, other than actions
               taken by the Executive that are intended to benefit
               the Company or any subsidiary or affiliate and do
               not benefit the Executive financially other than as
               an employee or stockholder of the Company, provided,
               however, that this provision shall only apply to any
               product or service which is in competition with a
               product or service of the Company or any subsidiary
               or affiliate thereof or (E) following the Merger
               Date, any breach or violation of the Company's Code
               of Conduct, as amended from time to time sufficient
               to warrant a for Cause termination consistent with
               the Company's past practice, consistently applied.

          Notwithstanding the foregoing, (x) the failure of the
          Executive, the Company, U.S. Healthcare or the Business
          to achieve any particular level of performance shall not,
          in and of itself, constitute Cause hereunder, (y) neither
          a breach of the Executive's duty of loyalty to the
          Company as described in subclause (A) nor a breach of the
          Company's Code of Conduct as described in subclause (E)
          shall constitute Cause hereunder unless such breach has
          had or could reasonably be expected to have a significant
          adverse effect on the business or reputation of the
          Company and (z) the occurrence of any of the events
          described above, if done inadvertently or of de minimis
          effect, shall not constitute "Cause". 

                    (d)  Good Reason.  The Executive may terminate
          his employment in the event there occurs one or more of
          the following events, without the written consent of the
          Executive, that has not been cured (if curable) within
          thirty (30) days after written notice thereof has been
          given by the Executive to the Company ("Good Reason");
          provided that the Executive shall have delivered a
          written notice to the Chief Executive Officer of the
          Company within 120 days of his having actual knowledge of
          the occurrence of the event or events constituting Good
          Reason stating that he intends to terminate his
          employment for Good Reason and specifying the factual
          basis for such termination:

                         (i)  a reduction in the Executive's annual
               Base Salary or incentive compensation opportunity as
               provided under Sections 5(a) and (b);

                        (ii)  a reduction in the Executive's
               positions, an adverse change in the Executive's
               reporting relationship or a material reduction in
               the Executive's duties and responsibilities, in each
               case from those described in Section 3 hereof;

                       (iii)  the relocation of the Executive's
               principal place of employment to a location more
               than 20 miles from the location at which he
               performed his principal duties on the date
               immediately prior to such relocation, or requiring
               the Executive to perform the principal portion of
               his duties in the greater Hartford, Connecticut
               area;

                        (iv)  a breach of the obligation to provide
               the Executive with the benefits required to be
               provided in accordance with Section 5(i);

                         (v)  a failure by the Company to pay any
               amounts due and owing to the Executive within 10
               days following written notice from the Executive of
               such failure to pay; 

                        (vi)  any other material breach of the
               Company's obligations to the Executive hereunder
               that materially affects the compensation or benefits
               payable to Executive or materially impairs the
               Executive's ability to perform the duties and
               responsibilities of his position;

                         (vii)  the failure of the Company to
               obtain the assumption and agreement in writing of
               its obligation to perform this Agreement in
               accordance with Section 12(a) hereof (A) by Parent
               on the Merger Date and (B) following the Merger
               Date, by any successor to Parent on the effective
               date of such succession; or

                         (viii)  a breach of Section 7.11(c) of the
               Merger Agreement.

          The Executive's continued employment shall not constitute
          consent to, or a waiver of rights with respect to, any
          act or failure to act constituting Good Reason hereunder. 
          In the event of a termination for Good Reason, the Date
          of Termination shall be the date specified in the Notice
          of Termination, which shall be no more than thirty (30)
          days after the Notice of Termination.

                    (e)  Other Terminations.  If the Executive's
          employment is terminated hereunder for any reason other
          than as set forth in subsections (a) through (d) of this
          Section 6, the date on which a Notice of Termination is
          given or any later date (within 30 days) set forth in
          such Notice of Termination shall be the Date of
          Termination.

                    (f)  Notice of Termination.  Any purported
          termination of the Executive's employment (other than
          termination pursuant to subsection (a) of this Section 6)
          shall be communicated by written Notice of Termination to
          the other party hereto in accordance with Section 13
          hereof.  For purposes of this Agreement, a "Notice of
          Termination" shall mean a notice that shall indicate the
          specific termination provision in this Agreement relied
          upon and shall set forth in reasonable detail the facts
          and circumstances claimed to provide a basis for
          termination of the Executive's employment under the
          provision so indicated.
          In addition, prior to the second anniversary of the
          Merger Date, a Notice of Termination is required to
          include a copy of a resolution duly adopted by the
          affirmative vote of not less than two-thirds of the
          entire membership of the Board, (which two-thirds must
          include Leonard Abramson or a U.S. Healthcare designee)
          at a meeting of such Board which was called and held for
          the purpose of considering such termination.

                    (g)  Dispute Concerning Termination.  If within
          fifteen (15) days after any Notice of Termination (other
          than with respect to a termination of the Executive's
          employment by the Company without Cause) is given, or, if
          later, prior to the Date of Termination (as determined
          without regard to this Section 6(g)), the party receiving
          such Notice of Termination notifies the other party that
          a dispute exists concerning the termination, the Date of
          Termination shall be extended until the earlier of (i)
          the date on which the Term ends or (ii) the date on which
          the dispute is finally resolved, either by mutual written
          agreement of the parties or by binding arbitration;
          provided, however, that the Date of Termination shall be
          extended by a notice of dispute given by the Executive
          only if such notice is given in good faith and the
          Executive pursues the resolution of such dispute with
          reasonable diligence.

                    (h)  Compensation During Dispute.  If the Date
          of Termination is extended in accordance with subsection
          (g) of this Section 6, the Company shall continue to pay
          the Executive the full compensation in effect when the
          notice giving rise to the dispute was given (including,
          but not limited to, Base Salary and Annual Bonus) and
          continue the Executive as a participant in all
          compensation, benefit and insurance plans in which the
          Executive was participating when the notice giving rise
          to the dispute was given, until the Date of Termination,
          as determined in accordance with subsection (g) of this
          Section 6.  Amounts paid under this Section 6(h) shall
          not be offset against or reduce any other amounts due
          under Section 7 of this Agreement.

                    7.  Compensation During Disability or Upon
          Termination.

                    (a)  Disability Period.  During any period that
          the Executive fails to perform his duties hereunder as a
          result of incapacity due to physical or mental illness
          ("Disability Period"), the Executive shall continue to
          (i) receive his full Base Salary, (ii) remain eligible to
          receive an Annual Bonus under Section 5(b) hereof, and
          (iii) participate in the programs described in Section
          5(i) hereof (except to the extent such participation is
          not permitted under the terms of such programs).  Such
          payments made to the Executive during the Disability
          Period shall be reduced by the sum of the amounts, if
          any, payable to the Executive at or prior to the time of
          any such payment under disability benefit plans of the
          Company or under the Social Security disability insurance
          program, and which amounts were not previously applied to
          reduce any such payment.

                    (b)  Death.  If the Executive's employment
          hereunder is terminated as a result of death, then:

                         (i)  the Company shall pay the Executive's
               estate or designated beneficiary, as soon as
               practicable after the Date of Termination, (A) any
               amounts earned, accrued or owing the Executive
               hereunder for services prior to the Date of
               Termination (including accrued deferred compensation
               and unused vacation and personal time) and (B) for a
               period of one year following the Date of
               Termination, such Base Salary and Annual Bonus as
               the Executive would have received during such period
               had he remained in the employ of the Company;

                        (ii)  the vesting and exercisability of all
               then outstanding equity-based awards shall be
               governed, as applicable, in accordance with Section
               5(d) of this Agreement or the terms of the U.S.
               Healthcare or Aetna, as the case may be, document
               under which they were initially granted (except that
               the vesting of awards granted under the U.S.
               Healthcare incentive plans prior to the Effective
               Date shall be governed by Section 1.7 of the Merger
               Agreement); and

                       (iii)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    (c)  Disability.  If the Executive's employment
          hereunder is terminated as a result of Disability, then:

                         (i)  the Company shall pay the Executive,
               as soon as practicable after the Date of
               Termination, (A) any amounts earned, accrued or
               owing the Executive hereunder for services prior to
               the Date of Termination (including accrued deferred
               compensation and unused vacation and personal time)
               and (B) for a period of one year following the Date
               of Termination, such Base Salary and Annual Bonus as
               the Executive would have received during such period
               had he remained in the employ of the Company, offset
               by any amounts received by the Executive pursuant to
               subsection (ii) of this Section 7(c);

                        (ii)  the Executive shall receive, until
               the date the Executive reaches age 65 or, if
               earlier, until his death, the salary-related
               disability benefits provided in accordance with, and
               subject to the conditions of, the long-term
               disability program then in effect for senior
               executives of the Company;

                        (iii)  the vesting and exercisability of
               all then outstanding equity-based awards shall be
               governed, as applicable, in accordance with Section
               5(d) of this Agreement or the terms of the U.S.
               Healthcare or Aetna, as the case may be, document
               under which they were initially granted (except that
               the vesting of awards granted under the U.S.
               Healthcare incentive plans prior to the Effective
               Date shall be governed by Section 1.7 of the Merger
               Agreement); and

                        (iv)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    (d)  Termination by Company for Cause or By
          Executive other than for Good Reason.  If the Executive's
          employment hereunder is terminated by the Company for
          Cause or by the Executive (other than for Good Reason),
          then:

                         (i)  the Company shall pay the Executive,
               as soon as practicable after the Date of
               Termination, any amounts earned, accrued or owing
               the Executive hereunder for services prior to the
               Date of Termination (including accrued deferred
               compensation and unused vacation and personal time);

                        (ii)  the vesting and exercisability of all
               then outstanding equity-based awards shall be
               governed, as applicable, in accordance with Section
               5(d) of this Agreement or the terms of the U.S.
               Healthcare or Aetna, as the case may be, document
               under which they were initially granted (except that
               the vesting of awards granted under the U.S.
               Healthcare incentive plans prior to the Effective
               Date shall be governed by Section 1.7 of the Merger
               Agreement); and

                       (iii)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    (e)  Termination by Company without Cause or by
          the Executive with Good Reason.  If the Executive's
          employment hereunder is terminated by the Company (other
          than for Cause or Disability) or by the Executive for
          Good Reason, then:

                         (i)  the Company shall pay the Executive,
               as soon as practicable after the Date of
               Termination, any amounts earned, accrued or owing
               the Executive hereunder for services prior to the
               Date of Termination (including accrued deferred
               compensation and unused vacation and personal time);

                        (ii)  notwithstanding any provision of any
               annual bonus plan to the contrary, the Company shall
               pay to the Executive, as soon as practicable after
               the Date of Termination, a lump sum amount, in cash,
               equal to the sum of (A) any annual bonus which has
               been allocated or awarded to the Executive for a
               completed fiscal year preceding the Date of
               Termination under any such plan and which, as of the
               Date of Termination, is contingent only upon the
               continued employment of the Executive to a
               subsequent date, and (B) a pro rata portion to the
               Date of Termination of the aggregate value of all
               contingent annual bonus awards to the Executive for
               all then uncompleted fiscal years (other than the
               fiscal year commencing in 1996) under any such plan,
               calculated as to each such award by multiplying the
               award that the Executive would have earned for the
               entire performance award period, assuming the
               achievement, at the target level, of the individual
               and corporate performance goals established with
               respect to such award, by the fraction (the
               "Fraction") obtained by dividing the number of full
               months and any fractional portion of a month during
               such performance award period through the Date of
               Termination by the total number of months contained
               in such performance award period; provided, however,
               that, in the event that the Executive's actual award
               (the "Actual Award") would have exceeded the target
               award had he remained in the employ of the Company
               until the end of any such performance award period,
               then the Company shall pay the Executive, as soon as
               practicable following the end of such period, an
               amount equal to the product of the Fraction and the
               excess of the Actual Award over the target award;
               and

                       (iii)  the Company shall pay to the
               Executive a severance payment in cash, 50% of which
               is payable in a lump sum on the Date of Termination
               and, subject to the Executive's continued compliance
               with the applicable provisions of Section 10 hereof
               (provided that the Executive be given an opportunity
               to cure (if curable) any breach of such Section 10
               in accordance with Section 10(d) hereof), the
               remaining 50% of which is payable in a lump sum on
               the first anniversary of the Date of Termination,
               equal to three times the sum of (A) the higher of
               the Executive's Base Salary as in effect immediately
               prior to the occurrence of the event or circumstance
               upon which the Notice of Termination is based and
               the Executive's annual base salary (including
               amounts deferred and any interest accrued thereon)
               in effect immediately prior to the Merger Date, and
               (B) the then current target annual bonus;

                        (iv)  (A) the exercisability of all then
               outstanding equity-based awards granted under the
               U.S. Healthcare incentive plans prior to the Merger
               Date shall be governed in accordance with the terms
               of such U.S. Healthcare incentive plans, (B) the
               vesting of restricted stock awards granted pursuant
               to Section 5(d) shall be governed in accordance with
               the terms of such Section and (C) all then
               outstanding equity-based awards granted under the
               Parent incentive plans shall continue to vest over
               the one year period following the Date of
               Termination and be exercisable through the 90 day
               period following such one year period;

                         (v)  for the thirty-six (36) month period
               immediately following the Date of Termination, the
               Company shall arrange to provide the Executive with
               life, disability, accident and health insurance
               benefits ("Insurance Benefits") and with pension
               plan benefits substantially similar, and on
               substantially similar terms, to those which the
               Executive is receiving immediately prior to the
               Notice of Termination or the economic equivalent
               thereof, which provision of Insurance Benefits shall
               satisfy all of the conditions necessary to avoid the
               imposition of any tax under section 4980B of the
               Code.  Insurance Benefits otherwise receivable by
               the Executive pursuant to this Section 7(e)(v) shall
               be reduced to the extent comparable benefits are
               actually received by, or made available to, the
               Executive without cost during the thirty-six (36)
               month period following the Executive's termination
               of employment (and any such benefits actually
               received by or made available to the Executive shall
               be reported to the Company by the Executive);

                        (vi)  if the Executive would have become
               entitled to benefits under the Company's
               postretirement health care or life insurance plans,
               as in effect immediately prior to the Effective Date
               (or, if there is a Merger Date, immediately prior to
               the Merger Date) or the Date of Termination
               (whichever is more favorable to the Executive), had
               the Executive's employment terminated on the date
               which is thirty-six (36) months after the Date of
               Termination, the Company shall provide such
               postretirement health care or life insurance
               benefits to the Executive and the Executive's
               dependents commencing on the later of (A) the date
               on which such coverage would have first become
               available (disregarding for these purposes the
               thirty-six (36) month period referred to above) and
               (B) the date on which benefits described in
               subsection (v) of this Section 7(e) shall terminate;
               and

                       (vii)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    8.  Gross-Up for Excise Tax.  (a)  Whether or
          not the Executive becomes entitled to any payments under
          Section 7 hereof, if any payments or benefits received or
          to be received by the Executive (whether pursuant to
          Section 5 hereof or any other provision of this Agreement
          or any other plan, arrangement or agreement with the
          Company or, with respect to his employment by the
          Company, with any other person (such payments or
          benefits, excluding the Gross-Up Payment described
          herein, being hereinafter referred to as the "Total
          Payments") will be subject to any excise tax imposed
          under section 4999 of the Internal Revenue Code of 1986,
          as amended (the "Excise Tax"), the Company shall pay to
          the Executive an additional amount (the "Gross-Up
          Payment") such that the net amount retained by the
          Executive, after deduction of any Excise Tax on the Total
          Payments and any federal, state and local income and
          employment taxes and Excise Tax upon the Gross-Up
          Payment, shall be equal to the Total Payments.

                    (b)  For purposes of determining whether any of
          the Total Payments will be subject to the Excise Tax and
          the amount of such Excise Tax, (i) all of the Total
          Payments shall be treated as "parachute payments" (within
          the meaning of section 280G(b)(2) of the Code) unless, in
          the opinion of Tax Counsel, a reasonable basis exists for
          determining that such payments or benefits (in whole or
          in part) do not constitute parachute payments, including
          by reason of section 280G(b)(4)(A) of the Code, (ii) all
          "excess parachute payments" within the meaning of section
          280G(b)(1) of the Code shall be treated as subject to the
          Excise Tax unless, in the opinion of Tax Counsel, a
          reasonable basis exists for determining that such excess
          parachute payments (in whole or in part) represent
          reasonable compensation for services actually rendered
          (within the meaning of section 280G(b)(4)(B) of the Code)
          in excess of the "base amount" (within the meaning of
          section 280G(b)(3) of the Code) allocable to such
          reasonable compensation, or are otherwise not subject to
          the Excise Tax, and (iii) the value of any noncash
          benefits or any deferred payment or benefit shall be
          determined by the Auditor in accordance with the
          principles of sections 280G(d)(3) and (4) of the Code. 
          For purposes of determining the amount of the Gross-Up
          Payment, the Executive shall be deemed to pay federal
          income tax at the highest marginal rate of federal income
          taxation in the calendar year in which the Gross-Up
          Payment is to be made and state and local income taxes at
          the highest marginal rate of taxation in the state and
          locality of the Executive's residence on the Date of
          Termination (or if there is no Date of Termination, then
          the date on which the Gross-Up Payment is calculated for
          purposes of this Section 8), net of the maximum reduction
          in federal income taxes which could be obtained from
          deduction of such state and local taxes.

                    (c)  In the event that the Excise Tax is
          finally determined to be less than the amount taken into
          account hereunder in calculating the Gross-Up Payment,
          the Executive shall repay to the Company, at the time
          that the amount of such reduction in Excise Tax is
          finally determined, the portion of the Gross-Up Payment
          attributable to such reduction (plus that portion of the
          Gross-Up Payment attributable to the Excise Tax and
          federal, state and local income and employment taxes
          imposed on the Gross-Up Payment being repaid by the
          Executive to the extent that such repayment results in a
          reduction in Excise Tax and/or a federal, state or local
          income or employment tax deduction) plus interest on the
          amount of such repayment at 120% of the rate provided in
          section 1274(b)(2)(B) of the Code.  In the event that the
          Excise Tax is determined to exceed the amount taken into
          account hereunder in calculating the Gross-Up Payment
          (including by reason of any payment the existence or
          amount of which cannot be determined at the time of the
          Gross-Up Payment), the Company shall make an additional
          Gross-Up Payment in respect of such excess (plus any
          interest, penalties or additions payable by the Executive
          with respect to such excess) at the time that the amount
          of such excess is finally determined.  The Executive and
          the Company shall each reasonably cooperate with the
          other in connection with any administrative or judicial
          proceedings concerning the existence or amount of
          liability for Excise Tax with respect to the Total
          Payments.

                    9.  Mitigation.  The Executive shall not be
          required to mitigate amounts payable pursuant to Section
          7 hereof by seeking other employment or otherwise, nor,
          except as provided in Section 7(e)(v), shall there be any
          offset against such payments on account of (a) any
          remuneration attributable to any subsequent employment
          that he may obtain or (b) any claims the Company may have
          against the Executive.

                    10.  Noncompetition and Confidentiality.

                    (a)  Noncompetition.  Prior to, and for a
          period of one year following, termination of the
          Executive's employment during the Term other than by the
          Company without Cause or by the Executive for Good
          Reason, the Executive shall not become associated,
          whether as a principal, partner, employee, consultant or
          shareholder (other than as a holder of not in excess of
          1% of the outstanding voting shares of any publicly
          traded company), with any entity that is actively engaged
          in any geographic area in any business which is in
          substantial and direct competition with the Business;
          provided, however, nothing in this Section 10(a) shall
          preclude the Executive from performing services solely
          and exclusively for a division or subsidiary of such an
          entity that is engaged in a noncompetitive business.

                    (b)  Nondisclosure, Nonsolicitation and
          Cooperation.

                         (i)  the Executive shall not (except to
               the extent required by an order of a court having
               competent jurisdiction or under subpoena from an
               appropriate government agency) disclose to any third
               person, whether during or subsequent to the
               Executive's employment with the Company, any trade
               secrets; customer lists; product development and
               related information; marketing plans and related
               information; sales plans and related information;
               operating policies and manuals; business plans;
               financial records; or other financial, commercial,
               business or technical information related to the
               Company or any subsidiary or affiliate thereof
               unless such information has been previously
               disclosed to the public by the Company or has become
               public knowledge other than by a breach of this
               Agreement; provided, however, that this limitation
               shall not apply to any such disclosure made while
               the Executive is employed by the Company, or any
               subsidiary or affiliate thereof in the ordinary
               course of the performance of the Executive's duties;

                        (ii)  prior to, and for two years
               following, termination of the Executive's employment
               during the Term, the Executive shall not attempt to
               induce any employee or Insurance Agent (as defined
               below) employed by or performing services for the
               Business to be employed or perform services
               elsewhere, provided that this covenant shall not
               preclude the Executive from taking any actions
               during the Term that (x) are intended to benefit the
               Company or any subsidiary or affiliate and (y) do
               not benefit the Executive financially other than as
               an employee or stockholder of the Company;

                       (iii)  prior to, and for two years
               following, termination of the Executive's employment
               during the Term, the Executive shall not attempt to
               induce any insurance agent or agency, insurance
               broker, broker-dealer or supplier of the Business to
               cease providing services to the Business, provided
               that this covenant shall not preclude the Executive
               from taking any actions during the Term that (x) are
               intended to benefit the Company or any subsidiary or
               affiliate and (y) do not benefit the Executive
               financially other than as an employee or stockholder
               of the Company; and

                        (iv)  prior to, and for two years
               following, termination of the Executive's employment
               during the Term, the Executive shall not attempt to
               solicit, on behalf of any person or entity other
               than the Business, the trade of any individual or
               entity which, at the time of the solicitation, is a
               customer of the Business, or which the Business is
               undertaking reasonable steps to procure as a
               customer at the time of or immediately preceding
               termination of the Term; provided, however, that
               this limitation shall only apply to (x) any product
               or service which is in competition with a product or
               service of the Business and (y) with respect to any
               customer with whom the Executive has or had (by
               virtue of the Executive's position or otherwise) a
               personal relationship.

          Solely for purposes of subsection (b)(ii) of this Section
          10, the term "Insurance Agent" shall mean those insurance
          agents or agencies representing the Company or any
          subsidiary or affiliate thereof, that are exclusive or
          career agents or agencies of the Company or any
          subsidiary or affiliate thereof, or any insurance agents
          or agencies which derive 50% or more of their business
          revenue from the Company or any subsidiary or affiliate
          thereof (calculated on an aggregate basis for the 12-
          month period prior to the date of determination or such
          other similar period for which such information is more
          readily available).

                    (c)  Company Property.  Promptly following the
          Executive's termination of the Executive's employment,
          the Executive shall return to the Company all property of
          the Company, and all copies thereof in the Executive's
          possession or under his control.

                    (d)  Intention of the Parties.  If any
          provision of Section 10 is determined by an arbitrator
          (or a court of competent jurisdiction asked to enforce
          the decision of the arbitrator) not to be enforceable in
          the manner set forth in this Agreement, the Company and
          Executive agree that it is the intention of the parties
          that such provision should be enforceable to the maximum
          extent possible under applicable law and that such
          arbitrator (or court) shall reform such provision to make
          it enforceable in accordance with the intent of the
          parties.  Executive acknowledges that a material part of
          the inducement for the Company to provide the salary and
          benefits evidenced hereby is Executive's covenants set
          forth in Section 10(a), (b) and (c) and that the
          covenants and obligations of Executive with respect to
          nondisclosure and nonsolicitation relate to special,
          unique and extraordinary matters and that a violation of
          any of the terms of such covenants and obligations will
          cause the Company irreparable injury for which adequate
          remedies are not available at law.  Therefore, Executive
          agrees that, if Executive shall materially breach any of
          those covenants following termination of employment and
          such breach is not cured (if curable) within ten (10)
          days following receipt of written notification thereof
          that specifies the manner in which the Company believes
          the Executive has breached such covenants, the Company
          shall have no further obligation to pay Executive any
          benefits otherwise payable under Sections 7(e)(iii), (v)
          and (vi) and the Company shall be entitled to an
          injunction, restraining order or such other equitable
          relief (without the requirement to post a bond)
          restraining Executive from committing any violation of
          the covenants and obligations contained in Section 10(a),
          (b) and (c).  The remedies in the preceding sentence are
          cumulative and are in addition to any other rights and
          remedies the Company may have at law or in equity as an
          arbitrator (or court) shall reasonably determine.

                    (e)  Waiver.  Without limiting the generality
          of the foregoing, upon request of the Executive prior to
          engaging in any conduct otherwise prohibited by this
          Section 10, the Company may, in its sole discretion,
          waive in writing, on such terms and conditions as it may
          deem appropriate, any violation of this Section 10 which
          would otherwise occur due to such conduct.

                    11.  Indemnification; Attorneys' Fees.  The
          Company shall indemnify the Executive to the full extent
          authorized by law and the Charter and By-Laws of the
          Company, as applicable, for all expenses, costs,
          liabilities and legal fees which the Executive may incur
          in the discharge or course of his duties hereunder.  The
          Executive shall be insured under the Company's Directors'
          and Officers' Liability Insurance Policy as in effect
          from time to time.  The Executive shall be deemed a third
          party beneficiary with respect to Section 7.6 of the
          Merger Agreement and, as such, shall have the right to
          enforce such provisions as if he were party to the Merger
          Agreement.  In connection with any dispute or proceeding
          arising under this Agreement where the Executive is
          ultimately the substantially prevailing party, the
          Company shall promptly reimburse Executive for all costs,
          including without limitation the reasonable attorneys'
          fees of any attorney of the Executive's choosing,
          incurred by the Executive in any such dispute or
          proceeding arising under this Agreement.  Any termination
          of the Executive's employment or of this Agreement shall
          have no effect on the continuing operation of this
          Section 11.

                    12.  Successors; Binding Agreement.

                    (a)  Company's Successors.  The Company shall
          require any successor (whether direct or indirect, by
          purchase, merger, consolidation or otherwise) to all or
          substantially all of the business and/or assets of the
          Company to expressly assume and agree to perform this
          Agreement in the same manner and to the same extent that
          the Company would be required to perform it if no such
          succession had taken place.  As used in this Agreement,
          "Company" shall mean the Company as hereinbefore defined
          and any successor to its business and/or assets as
          aforesaid which executes and delivers the agreement
          provided for in this Section 12 or which otherwise
          becomes bound by all the terms and provisions of this
          Agreement by operation of law.  This Agreement shall not
          otherwise be assignable by the Company.

                    (b)  Executive's Successors.  This Agreement
          shall not be assignable by the Executive.  This Agreement
          and all rights of the Executive hereunder shall inure to
          the benefit of and be enforceable by the Executive's
          personal or legal representatives, executors,
          administrators, successors, heirs, distributees, devisees
          and legatees.  Upon the Executive's death, all amounts to
          which he is entitled hereunder, unless otherwise provided
          herein, shall be paid in accordance with the terms of
          this Agreement to the Executive's devisee, legatee, or
          other designee or, if there be no such designee, to the
          Executive's estate.

                    13.  Notices.  For the purpose of this
          Agreement, notices and all other communications provided
          for in the Agreement shall be in writing and shall be
          deemed to have been duly given when delivered or received
          by facsimile or three (3) days after mailing by United
          States certified mail, return receipt requested, postage
          prepaid, addressed, if to the Executive, to the address
          inserted below the Executive's signature on the final
          page hereof and, if to the Company, to the attention of
          the General Counsel except where this Agreement provides
          otherwise.  Notice of change of address or addressee
          shall be effective only upon actual receipt.

                    14.  Disputes.  This Agreement shall be
          construed in accordance with and governed by the law of
          the Commonwealth of Pennsylvania (without regard to
          principles of conflict of laws).  All claims and
          controversies related to or stemming from this Agreement
          or the Executive's employment with the Company, except
          actions for equitable relief pending an arbitration
          award, shall be submitted to binding arbitration in Blue
          Bell, Pennsylvania by a panel of three neutral
          arbitrators under the Commercial Arbitration Rules of the
          American Arbitration Association.  Judgment upon an award
          of the arbitrators may be entered and enforced in any
          court having jurisdiction.

                    15.  Miscellaneous.  No provision of this
          Agreement may be modified, waived or discharged unless
          such waiver, modification or discharge is agreed to in
          writing and signed by the Executive and such officer as
          may be specifically designated by the Board.  No waiver
          by either party hereto at any time of any breach by the
          other party hereto of, or of any lack of compliance with,
          any condition or provision of this Agreement to be
          performed by such other party shall be deemed a waiver of
          similar or dissimilar provisions or conditions at the
          same or at any prior or subsequent time.  All references
          to sections of the Exchange Act or the Code shall be
          deemed also to refer to any successor provisions to such
          sections.  Subject to the provisions of Section 5(j) and
          8 hereof, payments provided for hereunder shall be paid
          net of any applicable withholding required under federal,
          state or local law and any additional withholding to
          which the Executive has agreed.  The obligations of the
          Company and the Executive under this Agreement which by
          their nature may require either partial or total
          performance after the expiration of the Term shall
          survive such expiration.  The invalidity or
          unenforceability of any provision of this Agreement shall
          not affect the validity or enforceability of any other
          provision of this Agreement, which shall remain in full
          force and effect.

                    16.  Counterparts.  This Agreement may be
          executed in one or more counterparts, each of which shall
          be deemed to be an original but all of which together
          will constitute one and the same instrument.

                    17.  Entire Agreement.  This Agreement between
          the Company and the Executive sets forth the entire
          agreement of the parties hereto in respect of the subject
          matter contained herein and supersedes, as of the
          Effective Date, all prior agreements, promises,
          covenants, arrangements, communications, representations
          or warranties, whether oral or written, by the parties
          hereto in respect of the subject matter contained herein;
          and any prior agreement of the parties hereto in respect
          of the subject matter contained herein shall be
          terminated and canceled as of the Effective Date.


                    IN WITNESS WHEREOF, the parties hereto have
          executed this Agreement on March 30, 1996 to be effective
          as of the Effective Date.

                                   U.S. Healthcare

                                   By:_______________________
                                      Name:
                                      Title:

                                   __________________________
                                   Joseph Sebastianelli

                                   __________________________
                                   __________________________
                                   __________________________
                                   Address of Executive






                             EMPLOYMENT AGREEMENT

                    AGREEMENT, dated as of March 30, 1996, by and
          between Michael Cardillo (the "Executive") and U.S.
          Healthcare, Inc., a Pennsylvania corporation ("U.S.
          Healthcare" or the "Company").

                    WHEREAS, the Board of Directors of the Company
          (the "Board") and the Executive each desires that the
          Executive continue to furnish services to the Company on
          the terms and conditions hereinafter set forth; and

                    WHEREAS, the parties desire to enter into this
          agreement setting forth the terms and conditions of the
          continued employment of the Executive with the Company;

                    NOW, THEREFORE, in consideration of the
          premises and the mutual agreements set forth below, and
          intending to be legally bound hereby, the parties hereto
          hereby agree as follows:

                    1.  Employment.  The Company hereby agrees to
          employ the Executive, and the Executive hereby accepts
          such employment, on the terms and conditions hereinafter
          set forth.

                    2.  Term; Parties.  (a) Term.  The term of this
          Agreement (as extended from time to time, the "Term")
          shall commence on the date (the "Effective Date") of
          execution of the Agreement and Plan of Merger (the
          "Merger Agreement"), dated March 30, 1996, by and among
          the Company, Aetna Life and Casualty Company ("Aetna")
          and Butterfly, Inc. ("Parent"), and shall end on the
          fifth anniversary of the consummation of the merger
          contemplated by the Merger Agreement (the "Merger Date")
          or, if such merger is not consummated, the Effective
          Date, unless further extended as provided in this Section
          2 or sooner terminated in the event that Executive's
          employment is terminated pursuant to Section 6. 
          Commencing on the fifth anniversary of the Merger Date
          (or, if there is no Merger Date, on the fifth anniversary
          of the Effective Date) and on each such subsequent
          anniversary, the Term shall automatically be extended for
          one additional year unless, not later than 180 days prior
          to such anniversary, the Company or the Executive shall
          have given notice not to extend the Term.  The giving by
          the Company of a notice not to extend the Term shall not
          constitute a termination without Cause or a termination
          for Good Reason (each as defined in Section 6).

                    (b)  Parties.  On and after the Merger Date,
          this Agreement shall be assigned to and assumed by Parent
          and all references herein to the Company shall mean
          Parent.  On and after the Merger Date, to the extent that
          the Executive's employment is with U.S. Healthcare or
          Aetna, the obligation of the Company hereunder shall
          include the obligation to cause U.S. Healthcare or Aetna
          to act in accordance with the terms hereof.

                    3.  Position and Duties.  Prior to the Merger
          Date, the Executive shall serve as an employee of U.S.
          Healthcare with the title of Co-President and Chief
          Marketing Officer of U.S. Healthcare, shall report
          directly to the Chairman and shall be responsible,
          together with Mr. Sebastianelli (referred to herein,
          collectively, as the "Co-Presidents"), for all of the
          lines of business and operations of U.S. Healthcare
          (including but not limited to all HMO, POS, indemnity
          health insurance and other lines of business and
          operations, the "Business").  

                    From and after the Merger Date, the Business
          shall also include all of the domestic (U.S.) lines of
          business and operations of Aetna Health Plans (including
          but not limited to all Health, Specialty Health and Group
          Insurance lines of business and operations), and the
          Executive shall assume the position of Co-President of
          the Business.  The Executive shall report directly and
          exclusively to the Chief Executive Officer of the
          Company, and the individuals who serve as the Chief
          Financial Officer, Chief Medical Officer, Senior Sales
          Officer and Chief Legal Officer of U.S. Healthcare as of
          the Effective Date shall report directly and exclusively
          to the Co-Presidents.  The Co-Presidents shall also
          select and appoint those other senior officers who will
          be reporting directly to the Co-Presidents and will be
          responsible for other areas of responsibility for the
          Business (including but not limited to Group Insurance,
          Information Technology, Operations, Sales, National
          Accounts, Behavioral Health, Dental, Pharmacy, Health
          Education and Human Resources), provided, however, that
          such appointments shall be made only in consultation with
          and with the approval of the Chief Executive Officer of
          the Company.  

                    During the Term, the Executive shall have such
          additional duties and responsibilities with respect to
          the Business as may be assigned to him by the Chief
          Executive Officer, provided that such duties and
          responsibilities are consistent with the Executive's
          position as Co-President and Chief Marketing Officer. 
          The Executive agrees to devote substantially all his full
          working time, attention and energies during normal
          business hours to the performance of his duties for the
          Company, provided that the Executive may continue to
          participate and engage in activities not associated with
          the Company consistent with the Executive's past
          practices at U.S. Healthcare.

                    4.  Place of Performance.  The principal place
          of employment and office of the Executive shall be in
          Blue Bell, Pennsylvania, or such other location as may be
          agreed to in writing by the Executive.

                    5.  Compensation and Related Matters.

                    (a)  Base Salary.  As compensation for the
          performance by the Executive of his duties hereunder, the
          Company shall pay the Executive a base salary at an
          annual rate that is no less than the Executive's annual
          salary rate for 1996, including any deferred compensation
          and interest or earnings on such year's deferred
          compensation under the Company's current deferred
          compensation program (such amount, as from time to time
          in effect, hereinafter referred to as "Base Salary"). 
          Base Salary shall be payable in accordance with U.S.
          Healthcare's normal payroll practices, shall be reviewed
          annually and may be increased upon such review.  Base
          Salary, once increased, may not be decreased.

                    (b)  Annual Bonus.  The Executive shall be
          entitled to an annual bonus upon the attainment by the
          Company, U.S. Healthcare and/or the Business of
          reasonable performance goals, established in accordance
          with the past practice of U.S. Healthcare.  The
          Executive's target bonus shall be equal to 80% of Base
          Salary, with appropriate increases or decreases upon the
          attainment of specified levels of Company, U.S.
          Healthcare and/or Business performance (such bonus
          hereinafter referred to as the "Annual Bonus"); provided,
          however, that with respect to fiscal year 1997, in no
          event shall the Annual Bonus be less than 100% of target. 
          If the Merger Date occurs during the fiscal year
          commencing in 1996, the Company shall pay to the
          Executive for such 1996 fiscal year 100% of the bonus
          which he would have received for the entire 1996 fiscal
          year as determined by U.S. Healthcare.

                    (c)  Sign-On Bonus.  Upon the Merger Date, the
          Company shall pay the Executive, in cash, an amount equal
          to the sum of (i) the Executive's then-current base
          salary (including deferred compensation and interest or
          earnings on such year's deferred compensation) and (ii)
          the aggregate value of the annual bonus paid or awarded
          (in cash and in shares of U.S. Healthcare common stock)
          to the Executive in respect of 1995, or, if the Merger
          Date is subsequent to December 31, 1996 and if the
          aggregate value of the annual bonus so paid or awarded to
          the Executive in respect of 1996 is higher, such 1996
          annual bonus (the sum of such amounts hereinafter
          referred to as the "Sign-On Bonus").

                    (d)  Stay Bonus.  The Executive shall be
          granted, as of the Merger Date, that number of restricted
          shares of common stock of Parent ("Parent Stock") which,
          when multiplied by the average closing price per share of
          Parent Stock on the ten trading dates immediately
          following the Merger Date, shall be equal in amount to
          the Sign-On Bonus (the "Restricted Stock Award").  The
          Restricted Stock Award shall be granted pursuant to a
          plan (i) that meets the requirements of Rule 16b-3
          promulgated under Section 16 of the Securities Exchange
          Act of 1934, as amended (the "Exchange Act"), (ii) the
          terms of which are acceptable to U.S. Healthcare and
          (iii) the shares of Company Stock reserved for issuance
          under which shall be registered in a timely manner on a
          Form S-8 (the "Plan").  Notwithstanding any provision of
          this Agreement to the contrary, the Restricted Stock
          Award shall become vested (i.e., all restrictions with
          respect thereto shall lapse) on the earliest to occur of
          (x) the second anniversary of the Merger Date, (y) a
          "change in control of Parent" (as defined in the Plan)
          following the Merger Date, or (z) upon termination of the
          Executive's employment by reason of death or Disability
          (as defined in Section 6 hereof), by the Company other
          than for Cause (as defined in Section 6 hereof) or by the
          Executive for Good Reason (as defined in Section 6
          hereof).  If the Executive's employment is terminated by
          the Executive without Good Reason or by the Company for
          Cause prior to the second anniversary of the Merger Date,
          the Restricted Stock Award shall be forfeited in full. 
          The Restricted Stock Award shall be subject to all other
          terms and conditions of the Plan, the rules and
          regulations thereunder, the applicable provisions of this
          Agreement and the document evidencing its terms and
          conditions reasonably acceptable to Executive.  The
          Restricted Stock Award is in addition to any other equity
          award made to the Executive under paragraph (e) of this
          Section 5 and shall not be offset against or reduce such
          award or any other award, benefit or amount due under
          this Agreement.

                    (e)  Future Equity Grants.  In addition to the
          Restricted Stock Award made pursuant to subsection (d) of
          this Section 6, the Executive shall from time to time be
          granted stock options and shares of restricted stock or
          other equity-based awards (collectively, "Equity Grants")
          on a basis no less favorable than such grants are made to
          similarly situated senior officers of the Company. 
          Without limiting the generality of the foregoing, if the
          Merger Date occurs after Parent has granted awards in
          respect of calendar year 1997, the Executive shall be
          entitled to receive an Equity Grant in respect of 1997. 

                    (f)  Expenses.  The Company shall reimburse the
          Executive for all reasonable business expenses, subject
          to the applicable policies and procedures of the Company
          then in force.

                    (g)  Vacation.  The Executive shall be entitled
          to 20 vacation days and that number of personal days and
          holidays as is consistent with U.S. Healthcare's current
          practices (including, with respect to up to the greater
          of 25 days or the number of days the Executive has
          accrued at the Effective Date, cash compensation in lieu
          thereof upon termination or expiration of this Agreement)
          or, if more favorable to the Executive, in accordance
          with the policies applicable generally to senior
          executives of the Company or any of its subsidiaries.

                    (h)  Services Furnished.  The Company shall
          furnish the Executive with appropriate office space and
          such other facilities and services as shall be suitable
          to the Executive's position and adequate for the
          performance of his duties as set forth in Section 3
          hereof and on a basis at least as favorable as in effect
          immediately prior to the Merger Date, such office space
          and other facilities and services to be furnished at the
          location set forth in Section 4 hereof.

                    (i)  Other Benefits.  The Company shall provide
          to the Executive such employee benefit plans and
          arrangements as are generally available to senior
          officers of the Company and its subsidiaries, including
          but not limited to retirement benefits, group life
          insurance, medical and dental insurance, and accident and
          disability insurance, which shall be provided on a basis
          reasonably comparable in the aggregate to those provided
          to him immediately prior to the Merger Date or, if more
          favorable to the Executive in the aggregate, to those
          provided to other senior officers of the Company and its
          subsidiaries.

                    (j)  Restrictions on Sale of Securities;
          Payment of Taxes.  From the date hereof to the earlier of
          the Merger Date or the date on which the transaction
          contemplated by the Merger Agreement is abandoned, the
          Executive agrees that he will not sell or otherwise
          dispose of any shares of the common stock of U.S.
          Healthcare ("U.S. Healthcare Stock"), including shares
          subject to option, except for the partial cash-out of
          such shares and options in connection with the
          transaction contemplated by the Merger Agreement.  During
          the one-year period following the Merger Date, the
          Executive agrees that, so long as he remains employed by
          the Company or any of its subsidiaries, he will not sell
          or otherwise dispose of any shares or option shares of
          Parent Stock.  Nothing herein shall prohibit the
          Executive from transferring any shares of U.S. Healthcare
          Stock or Parent Stock to a "Permitted Transferee," as
          defined in Article 5A.III of the U.S. Healthcare Articles
          of Incorporation.  In consideration of the Executive's
          agreement under this Section 5, the Company shall
          promptly reimburse the Executive for any and all income,
          wage and employment taxes (and any and all income and
          employment taxes on the reimbursement amount), payable by
          the Executive as the result of the acceleration of the
          vesting of restricted shares of U.S. Healthcare Stock on
          the Effective Date or as the result of the partial cash-
          out of shares of U.S. Healthcare Stock still subject to
          option on the Merger Date.  In no event shall Executive
          be reimbursed for any income, wage or employment taxes
          that result from the exercise of any options.

                    6.  Termination.  The Executive's employment
          hereunder may be terminated as follows:

                    (a)  Death.  The Executive's employment shall
          terminate upon his death, and the date of his death shall
          be the Date of Termination.

                    (b)  Disability.  If, as a result of the
          Executive's incapacity due to physical or mental illness
          (as determined by a medical doctor mutually agreed to by
          the Executive or his legal representative and the
          Company), the Executive shall have been absent from his
          duties hereunder on a full-time basis for the entire
          period of six consecutive months and, within thirty (30)
          days after written Notice of Termination (as defined in
          subsection (f) of this Section 6) is given, shall not
          have returned to the performance of his duties hereunder
          on a full-time basis ("Disability"), the Company may
          terminate the Executive's employment hereunder.  In this
          event, the Date of Termination shall be thirty (30) days
          after Notice of Termination is given (provided that the
          Executive shall not have returned to the performance of
          his duties on a full-time basis during such thirty (30)
          day period).

                    (c)  Cause.  The Company may terminate the
          Executive's employment in the event there occurs one or
          more of the following events that has not been cured (if
          curable) within thirty (30) days after written notice
          thereof has been given by the Company to the Executive
          ("Cause"); provided that the Company shall have delivered
          a written notice to the Executive within 120 days of its
          having actual knowledge of the occurrence of any of such
          events stating that the Company intends to terminate the
          Executive's employment for Cause and specifying the
          factual basis for such termination:

                         (i) the willful failure by the Executive
               to perform substantially the Executive's duties as
               an employee of the Company (other than due to
               physical or mental illness or after the delivery of
               a Notice of Termination for Good Reason by the
               Executive pursuant to subsection (f) of this Section
               6); 

                         (ii) the Executive's engaging in
               misconduct that is materially injurious to the
               Company or any subsidiary or any affiliate of the
               Company;

                         (iii) the Executive's having been
               convicted of, or entered a plea of nolo contendere
               to, a crime that constitutes a felony;

                         (iv) the material breach by the Executive
               of any written covenant or agreement not to compete
               with the Company or any subsidiary or any affiliate;
               or 

                         (v) the breach by the Executive of his
               duty of loyalty to the Company which shall include,
               without limitation (A) the disclosure by the
               Executive of any confidential information pertaining
               to the Company or any subsidiary or any affiliate of
               the Company, other than (x) in the ordinary course
               of the performance of his duties on behalf of the
               Company or (y) pursuant to a judicial or
               administrative subpoena from a court or governmental
               authority with jurisdiction over the matter in
               question, (B) the harmful interference by the
               Executive in the business or operations of the
               Company or any subsidiary or any affiliate of the
               Company, (C) any attempt by the Executive to induce
               any employee, insurance agent, insurance broker or
               broker-dealer of the Company or any subsidiary or
               any affiliate to be employed or perform services
               elsewhere, other than actions taken by the Executive
               that are intended to benefit the Company or any
               subsidiary or affiliate and do not benefit the
               Executive financially other than as an employee or
               stockholder of the Company, (D) any attempt by the
               Executive to solicit the trade of any customer or
               supplier, or prospective customer or supplier, of
               the Company on behalf of any person other than the
               Company or a subsidiary thereof, other than actions
               taken by the Executive that are intended to benefit
               the Company or any subsidiary or affiliate and do
               not benefit the Executive financially other than as
               an employee or stockholder of the Company, provided,
               however, that this provision shall only apply to any
               product or service which is in competition with a
               product or service of the Company or any subsidiary
               or affiliate thereof or (E) following the Merger
               Date, any breach or violation of the Company's Code
               of Conduct, as amended from time to time sufficient
               to warrant a for Cause termination consistent with
               the Company's past practice, consistently applied.

          Notwithstanding the foregoing, (x) the failure of the
          Executive, the Company, U.S. Healthcare or the Business
          to achieve any particular level of performance shall not,
          in and of itself, constitute Cause hereunder, (y) neither
          a breach of the Executive's duty of loyalty to the
          Company as described in subclause (A) nor a breach of the
          Company's Code of Conduct as described in subclause (E)
          shall constitute Cause hereunder unless such breach has
          had or could reasonably be expected to have a significant
          adverse effect on the business or reputation of the
          Company and (z) the occurrence of any of the events
          described above, if done inadvertently or of de minimis
          effect, shall not constitute "Cause". 

                    (d)  Good Reason.  The Executive may terminate
          his employment in the event there occurs one or more of
          the following events, without the written consent of the
          Executive, that has not been cured (if curable) within
          thirty (30) days after written notice thereof has been
          given by the Executive to the Company ("Good Reason");
          provided that the Executive shall have delivered a
          written notice to the Chief Executive Officer of the
          Company within 120 days of his having actual knowledge of
          the occurrence of the event or events constituting Good
          Reason stating that he intends to terminate his
          employment for Good Reason and specifying the factual
          basis for such termination:

                         (i)  a reduction in the Executive's annual
               Base Salary or incentive compensation opportunity as
               provided under Sections 5(a) and (b);

                        (ii)  a reduction in the Executive's
               positions, an adverse change in the Executive's
               reporting relationship or a material reduction in
               the Executive's duties and responsibilities, in each
               case from those described in Section 3 hereof;

                       (iii)  the relocation of the Executive's
               principal place of employment to a location more
               than 20 miles from the location at which he
               performed his principal duties on the date
               immediately prior to such relocation, or requiring
               the Executive to perform the principal portion of
               his duties in the greater Hartford, Connecticut
               area;

                        (iv)  a breach of the obligation to provide
               the Executive with the benefits required to be
               provided in accordance with Section 5(i);

                         (v)  a failure by the Company to pay any
               amounts due and owing to the Executive within 10
               days following written notice from the Executive of
               such failure to pay; 

                        (vi)  any other material breach of the
               Company's obligations to the Executive hereunder
               that materially affects the compensation or benefits
               payable to Executive or materially impairs the
               Executive's ability to perform the duties and
               responsibilities of his position;

                         (vii)  the failure of the Company to
               obtain the assumption and agreement in writing of
               its obligation to perform this Agreement in
               accordance with Section 12(a) hereof (A) by Parent
               on the Merger Date and (B) following the Merger
               Date, by any successor to Parent on the effective
               date of such succession; or

                         (viii)  a breach of Section 7.11(c) of the
               Merger Agreement.

          The Executive's continued employment shall not constitute
          consent to, or a waiver of rights with respect to, any
          act or failure to act constituting Good Reason hereunder. 
          In the event of a termination for Good Reason, the Date
          of Termination shall be the date specified in the Notice
          of Termination, which shall be no more than thirty (30)
          days after the Notice of Termination.

                    (e)  Other Terminations.  If the Executive's
          employment is terminated hereunder for any reason other
          than as set forth in subsections (a) through (d) of this
          Section 6, the date on which a Notice of Termination is
          given or any later date (within 30 days) set forth in
          such Notice of Termination shall be the Date of
          Termination.

                    (f)  Notice of Termination.  Any purported
          termination of the Executive's employment (other than
          termination pursuant to subsection (a) of this Section 6)
          shall be communicated by written Notice of Termination to
          the other party hereto in accordance with Section 13
          hereof.  For purposes of this Agreement, a "Notice of
          Termination" shall mean a notice that shall indicate the
          specific termination provision in this Agreement relied
          upon and shall set forth in reasonable detail the facts
          and circumstances claimed to provide a basis for
          termination of the Executive's employment under the
          provision so indicated.
          In addition, prior to the second anniversary of the
          Merger Date, a Notice of Termination is required to
          include a copy of a resolution duly adopted by the
          affirmative vote of not less than two-thirds of the
          entire membership of the Board, (which two-thirds must
          include Leonard Abramson or a U.S. Healthcare designee)
          at a meeting of such Board which was called and held for
          the purpose of considering such termination.

                    (g)  Dispute Concerning Termination.  If within
          fifteen (15) days after any Notice of Termination (other
          than with respect to a termination of the Executive's
          employment by the Company without Cause) is given, or, if
          later, prior to the Date of Termination (as determined
          without regard to this Section 6(g)), the party receiving
          such Notice of Termination notifies the other party that
          a dispute exists concerning the termination, the Date of
          Termination shall be extended until the earlier of (i)
          the date on which the Term ends or (ii) the date on which
          the dispute is finally resolved, either by mutual written
          agreement of the parties or by binding arbitration;
          provided, however, that the Date of Termination shall be
          extended by a notice of dispute given by the Executive
          only if such notice is given in good faith and the
          Executive pursues the resolution of such dispute with
          reasonable diligence.

                    (h)  Compensation During Dispute.  If the Date
          of Termination is extended in accordance with subsection
          (g) of this Section 6, the Company shall continue to pay
          the Executive the full compensation in effect when the
          notice giving rise to the dispute was given (including,
          but not limited to, Base Salary and Annual Bonus) and
          continue the Executive as a participant in all
          compensation, benefit and insurance plans in which the
          Executive was participating when the notice giving rise
          to the dispute was given, until the Date of Termination,
          as determined in accordance with subsection (g) of this
          Section 6.  Amounts paid under this Section 6(h) shall
          not be offset against or reduce any other amounts due
          under Section 7 of this Agreement.

                    7.  Compensation During Disability or Upon
          Termination.

                    (a)  Disability Period.  During any period the
          Executive fails to perform his duties hereunder as a
          result of incapacity due to physical or mental illness
          ("Disability Period"), the Executive shall continue to
          (i) receive his full Base Salary, (ii) remain eligible to
          receive an Annual Bonus under Section 5(b) hereof, and
          (iii) participate in the programs described in Section
          5(i) hereof (except to the extent such participation is
          not permitted under the terms of such programs).  Such
          payments made to the Executive during the Disability
          Period shall be reduced by the sum of the amounts, if
          any, payable to the Executive at or prior to the time of
          any such payment under disability benefit plans of the
          Company or under the Social Security disability insurance
          program, and which amounts were not previously applied to
          reduce any such payment.

                    (b)  Death.  If the Executive's employment
          hereunder is terminated as a result of death, then:

                         (i)  the Company shall pay the Executive's
               estate or designated beneficiary, as soon as
               practicable after the Date of Termination, (A) any
               amounts earned, accrued or owing the Executive
               hereunder for services prior to the Date of
               Termination (including accrued deferred compensation
               and unused vacation and personal time) and (B) for a
               period of one year following the Date of
               Termination, such Base Salary and Annual Bonus as
               the Executive would have received during such period
               had he remained in the employ of the Company;

                        (ii)  the vesting and exercisability of all
               then outstanding equity-based awards shall be
               governed, as applicable, in accordance with Section
               5(d) of this Agreement or the terms of the U.S.
               Healthcare or Aetna, as the case may be, document
               under which they were initially granted (except that
               the vesting of awards granted under the U.S.
               Healthcare incentive plans prior to the Effective
               Date shall be governed by Section 1.7 of the Merger
               Agreement); and

                       (iii)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    (c)  Disability.  If the Executive's employment
          hereunder is terminated as a result of Disability, then:

                         (i)  the Company shall pay the Executive,
               as soon as practicable after the Date of
               Termination, (A) any amounts earned, accrued or
               owing the Executive hereunder for services prior to
               the Date of Termination (including accrued deferred
               compensation and unused vacation and personal time)
               and (B) for a period of one year following the Date
               of Termination, such Base Salary and Annual Bonus as
               the Executive would have received during such period
               had he remained in the employ of the Company, offset
               by any amounts received by the Executive pursuant to
               subsection (ii) of this Section 7(c);

                        (ii)  the Executive shall receive, until
               the date the Executive reaches age 65 or, if
               earlier, until his death, the salary-related
               disability benefits provided in accordance with, and
               subject to the conditions of, the long-term
               disability program then in effect for senior
               executives of the Company;

                        (iii)  the vesting and exercisability of
               all then outstanding equity-based awards shall be
               governed, as applicable, in accordance with Section
               5(d) of this Agreement or the terms of the U.S.
               Healthcare or Aetna, as the case may be, document
               under which they were initially granted (except that
               the vesting of awards granted under the U.S.
               Healthcare incentive plans prior to the Effective
               Date shall be governed by Section 1.7 of the Merger
               Agreement); and

                        (iv)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    (d)  Termination by Company for Cause or By
          Executive other than for Good Reason.  If the Executive's
          employment hereunder is terminated by the Company for
          Cause or by the Executive (other than for Good Reason),
          then:

                         (i)  the Company shall pay the Executive,
               as soon as practicable after the Date of
               Termination, any amounts earned, accrued or owing
               the Executive hereunder for services prior to the
               Date of Termination (including accrued deferred
               compensation and unused vacation and personal time);

                        (ii)  the vesting and exercisability of all
               then outstanding equity-based awards shall be
               governed, as applicable, in accordance with Section
               5(d) of this Agreement or the terms of the U.S.
               Healthcare or Aetna, as the case may be, document
               under which they were initially granted (except that
               the vesting of awards granted under the U.S.
               Healthcare incentive plans prior to the Effective
               Date shall be governed by Section 1.7 of the Merger
               Agreement); and

                       (iii)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    (e)  Termination by Company without Cause or by
          the Executive with Good Reason.  If the Executive's
          employment hereunder is terminated by the Company (other
          than for Cause or Disability) or by the Executive for
          Good Reason, then:

                         (i)  the Company shall pay the Executive,
               as soon as practicable after the Date of
               Termination, any amounts earned, accrued or owing
               the Executive hereunder for services prior to the
               Date of Termination (including accrued deferred
               compensation and unused vacation and personal time);

                        (ii)  notwithstanding any provision of any
               annual bonus plan to the contrary, the Company shall
               pay to the Executive, as soon as practicable after
               the Date of Termination, a lump sum amount, in cash,
               equal to the sum of (A) any annual bonus which has
               been allocated or awarded to the Executive for a
               completed fiscal year preceding the Date of
               Termination under any such plan and which, as of the
               Date of Termination, is contingent only upon the
               continued employment of the Executive to a
               subsequent date, and (B) a pro rata portion to the
               Date of Termination of the aggregate value of all
               contingent annual bonus awards to the Executive for
               all then uncompleted fiscal years (other than the
               fiscal year commencing in 1996) under any such plan,
               calculated as to each such award by multiplying the
               award that the Executive would have earned for the
               entire performance award period, assuming the
               achievement, at the target level, of the individual
               and corporate performance goals established with
               respect to such award, by the fraction (the
               "Fraction") obtained by dividing the number of full
               months and any fractional portion of a month during
               such performance award period through the Date of
               Termination by the total number of months contained
               in such performance award period; provided, however,
               that, in the event that the Executive's actual award
               (the "Actual Award") would have exceeded the target
               award had he remained in the employ of the Company
               until the end of any such performance award period,
               then the Company shall pay the Executive, as soon as
               practicable following the end of such period, an
               amount equal to the product of the Fraction and the
               excess of the Actual Award over the target award;
               and

                       (iii)  the Company shall pay to the
               Executive a severance payment in cash, 50% of which
               is payable in a lump sum on the Date of Termination
               and, subject to the Executive's continued compliance
               with the applicable provisions of Section 10 hereof
               (provided that the Executive be given an opportunity
               to cure (if curable) any breach of such Section 10
               in accordance with Section 10(d) hereof), the
               remaining 50% of which is payable in a lump sum on
               the first anniversary of the Date of Termination,
               equal to three times the sum of (A) the higher of
               the Executive's Base Salary as in effect immediately
               prior to the occurrence of the event or circumstance
               upon which the Notice of Termination is based and
               the Executive's annual base salary (including
               amounts deferred and any interest accrued thereon)
               in effect immediately prior to the Merger Date, and
               (B) the then current target annual bonus;

                        (iv)  (A) the exercisability of all then
               outstanding equity-based awards granted under the
               U.S. Healthcare incentive plans prior to the Merger
               Date shall be governed in accordance with the terms
               of such U.S. Healthcare incentive plans, (B) the
               vesting of restricted stock awards granted pursuant
               to Section 5(d) shall be governed in accordance with
               the terms of such Section and (C) all then
               outstanding equity-based awards granted under the
               Parent incentive plans shall continue to vest over
               the one year period following the Date of
               Termination and be exercisable through the 90 day
               period following such one year period;

                         (v)  for the thirty-six (36) month period
               immediately following the Date of Termination, the
               Company shall arrange to provide the Executive with
               life, disability, accident and health insurance
               benefits ("Insurance Benefits") and with pension
               plan benefits substantially similar, and on
               substantially similar terms, to those which the
               Executive is receiving immediately prior to the
               Notice of Termination or the economic equivalent
               thereof, which provision of Insurance Benefits shall
               satisfy all of the conditions necessary to avoid the
               imposition of any tax under section 4980B of the
               Code.  Insurance Benefits otherwise receivable by
               the Executive pursuant to this Section 7(e)(v) shall
               be reduced to the extent comparable benefits are
               actually received by, or made available to, the
               Executive without cost during the thirty-six (36)
               month period following the Executive's termination
               of employment (and any such benefits actually
               received by or made available to the Executive shall
               be reported to the Company by the Executive);

                        (vi)  if the Executive would have become
               entitled to benefits under the Company's
               postretirement health care or life insurance plans,
               as in effect immediately prior to the Effective Date
               (or, if there is a Merger Date, immediately prior to
               the Merger Date) or the Date of Termination
               (whichever is more favorable to the Executive), had
               the Executive's employment terminated on the date
               which is thirty-six (36) months after the Date of
               Termination, the Company shall provide such
               postretirement health care or life insurance
               benefits to the Executive and the Executive's
               dependents commencing on the later of (A) the date
               on which such coverage would have first become
               available (disregarding for these purposes the
               thirty-six (36) month period referred to above) and
               (B) the date on which benefits described in
               subsection (v) of this Section 7(e) shall terminate;
               and

                       (vii)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    8.  Gross-Up for Excise Tax.  (a)  Whether or
          not the Executive becomes entitled to any payments under
          Section 7 hereof, if any payments or benefits received or
          to be received by the Executive (whether pursuant to
          Section 5 hereof or any other provision of this Agreement
          or any other plan, arrangement or agreement with the
          Company or, with respect to his employment by the
          Company, with any other person (such payments or
          benefits, excluding the Gross-Up Payment described
          herein, being hereinafter referred to as the "Total
          Payments") will be subject to any excise tax imposed
          under section 4999 of the Internal Revenue Code of 1986,
          as amended (the "Excise Tax"), the Company shall pay to
          the Executive an additional amount (the "Gross-Up
          Payment") such that the net amount retained by the
          Executive, after deduction of any Excise Tax on the Total
          Payments and any federal, state and local income and
          employment taxes and Excise Tax upon the Gross-Up
          Payment, shall be equal to the Total Payments.

                    (b)  For purposes of determining whether any of
          the Total Payments will be subject to the Excise Tax and
          the amount of such Excise Tax, (i) all of the Total
          Payments shall be treated as "parachute payments" (within
          the meaning of section 280G(b)(2) of the Code) unless, in
          the opinion of Tax Counsel, a reasonable basis exists for
          determining that such payments or benefits (in whole or
          in part) do not constitute parachute payments, including
          by reason of section 280G(b)(4)(A) of the Code, (ii) all
          "excess parachute payments" within the meaning of section
          280G(b)(1) of the Code shall be treated as subject to the
          Excise Tax unless, in the opinion of Tax Counsel, a
          reasonable basis exists for determining that such excess
          parachute payments (in whole or in part) represent
          reasonable compensation for services actually rendered
          (within the meaning of section 280G(b)(4)(B) of the Code)
          in excess of the "base amount" (within the meaning of
          section 280G(b)(3) of the Code) allocable to such
          reasonable compensation, or are otherwise not subject to
          the Excise Tax, and (iii) the value of any noncash
          benefits or any deferred payment or benefit shall be
          determined by the Auditor in accordance with the
          principles of sections 280G(d)(3) and (4) of the Code. 
          For purposes of determining the amount of the Gross-Up
          Payment, the Executive shall be deemed to pay federal
          income tax at the highest marginal rate of federal income
          taxation in the calendar year in which the Gross-Up
          Payment is to be made and state and local income taxes at
          the highest marginal rate of taxation in the state and
          locality of the Executive's residence on the Date of
          Termination (or if there is no Date of Termination, then
          the date on which the Gross-Up Payment is calculated for
          purposes of this Section 8), net of the maximum reduction
          in federal income taxes which could be obtained from
          deduction of such state and local taxes.

                    (c)  In the event that the Excise Tax is
          finally determined to be less than the amount taken into
          account hereunder in calculating the Gross-Up Payment,
          the Executive shall repay to the Company, at the time
          that the amount of such reduction in Excise Tax is
          finally determined, the portion of the Gross-Up Payment
          attributable to such reduction (plus that portion of the
          Gross-Up Payment attributable to the Excise Tax and
          federal, state and local income and employment taxes
          imposed on the Gross-Up Payment being repaid by the
          Executive to the extent that such repayment results in a
          reduction in Excise Tax and/or a federal, state or local
          income or employment tax deduction) plus interest on the
          amount of such repayment at 120% of the rate provided in
          section 1274(b)(2)(B) of the Code.  In the event that the
          Excise Tax is determined to exceed the amount taken into
          account hereunder in calculating the Gross-Up Payment
          (including by reason of any payment the existence or
          amount of which cannot be determined at the time of the
          Gross-Up Payment), the Company shall make an additional
          Gross-Up Payment in respect of such excess (plus any
          interest, penalties or additions payable by the Executive
          with respect to such excess) at the time that the amount
          of such excess is finally determined.  The Executive and
          the Company shall each reasonably cooperate with the
          other in connection with any administrative or judicial
          proceedings concerning the existence or amount of
          liability for Excise Tax with respect to the Total
          Payments.

                    9.  Mitigation.  The Executive shall not be
          required to mitigate amounts payable pursuant to Section
          7 hereof by seeking other employment or otherwise, nor,
          except as provided in Section 7(e)(v), shall there be any
          offset against such payments on account of (a) any
          remuneration attributable to any subsequent employment
          that he may obtain or (b) any claims the Company may have
          against the Executive.

                    10.  Noncompetition and Confidentiality.

                    (a)  Noncompetition.  Prior to, and for a
          period of one year following, termination of the
          Executive's employment during the Term other than by the
          Company without Cause or by the Executive for Good
          Reason, the Executive shall not become associated,
          whether as a principal, partner, employee, consultant or
          shareholder (other than as a holder of not in excess of
          1% of the outstanding voting shares of any publicly
          traded company), with any entity that is actively engaged
          in any geographic area in any business which is in
          substantial and direct competition with the Business;
          provided, however, nothing in this Section 10(a) shall
          preclude the Executive from performing services solely
          and exclusively for a division or subsidiary of such an
          entity that is engaged in a noncompetitive business.

                    (b)  Nondisclosure, Nonsolicitation and
          Cooperation.

                         (i)  the Executive shall not (except to
               the extent required by an order of a court having
               competent jurisdiction or under subpoena from an
               appropriate government agency) disclose to any third
               person, whether during or subsequent to the
               Executive's employment with the Company, any trade
               secrets; customer lists; product development and
               related information; marketing plans and related
               information; sales plans and related information;
               operating policies and manuals; business plans;
               financial records; or other financial, commercial,
               business or technical information related to the
               Company or any subsidiary or affiliate thereof
               unless such information has been previously
               disclosed to the public by the Company or has become
               public knowledge other than by a breach of this
               Agreement; provided, however, that this limitation
               shall not apply to any such disclosure made while
               the Executive is employed by the Company, or any
               subsidiary or affiliate thereof in the ordinary
               course of the performance of the Executive's duties;

                        (ii)  prior to, and for two years
               following, termination of the Executive's employment
               during the Term, the Executive shall not attempt to
               induce any employee or Insurance Agent (as defined
               below) employed by or performing services for the
               Business to be employed or perform services
               elsewhere, provided that this covenant shall not
               preclude the Executive from taking any actions
               during the Term that (x) are intended to benefit the
               Company or any subsidiary or affiliate and (y) do
               not benefit the Executive financially other than as
               an employee or stockholder of the Company;

                       (iii)  prior to, and for two years
               following, termination of the Executive's employment
               during the Term, the Executive shall not attempt to
               induce any insurance agent or agency, insurance
               broker, broker-dealer or supplier of the Business to
               cease providing services to the Business, provided
               that this covenant shall not preclude the Executive
               from taking any actions during the Term that (x) are
               intended to benefit the Company or any subsidiary or
               affiliate and (y) do not benefit the Executive
               financially other than as an employee or stockholder
               of the Company; and

                        (iv)  prior to, and for two years
               following, termination of the Executive's employment
               during the Term, the Executive shall not attempt to
               solicit, on behalf of any person or entity other
               than the Business, the trade of any individual or
               entity which, at the time of the solicitation, is a
               customer of the Business, or which the Business is
               undertaking reasonable steps to procure as a
               customer at the time of or immediately preceding
               termination of the Term; provided, however, that
               this limitation shall only apply to (x) any product
               or service which is in competition with a product or
               service of the Business and (y) with respect to any
               customer with whom the Executive has or had (by
               virtue of the Executive's position or otherwise) a
               personal relationship.

          Solely for purposes of subsection (b)(ii) of this Section
          10, the term "Insurance Agent" shall mean those insurance
          agents or agencies representing the Company or any
          subsidiary or affiliate thereof, that are exclusive or
          career agents or agencies of the Company or any
          subsidiary or affiliate thereof, or any insurance agents
          or agencies which derive 50% or more of their business
          revenue from the Company or any subsidiary or affiliate
          thereof (calculated on an aggregate basis for the 12-
          month period prior to the date of determination or such
          other similar period for which such information is more
          readily available).

                    (c)  Company Property.  Promptly following the
          Executive's termination of the Executive's employment,
          the Executive shall return to the Company all property of
          the Company, and all copies thereof in the Executive's
          possession or under his control.

                    (d)  Intention of the Parties.  If any
          provision of Section 10 is determined by an arbitrator
          (or a court of competent jurisdiction asked to enforce
          the decision of the arbitrator) not to be enforceable in
          the manner set forth in this Agreement, the Company and
          Executive agree that it is the intention of the parties
          that such provision should be enforceable to the maximum
          extent possible under applicable law and that such
          arbitrator (or court) shall reform such provision to make
          it enforceable in accordance with the intent of the
          parties.  Executive acknowledges that a material part of
          the inducement for the Company to provide the salary and
          benefits evidenced hereby is Executive's covenants set
          forth in Section 10(a), (b) and (c) and that the
          covenants and obligations of Executive with respect to
          nondisclosure and nonsolicitation relate to special,
          unique and extraordinary matters and that a violation of
          any of the terms of such covenants and obligations will
          cause the Company irreparable injury for which adequate
          remedies are not available at law.  Therefore, Executive
          agrees that, if Executive shall materially breach any of
          those covenants following termination of employment and
          such breach is not cured (if curable) within ten (10)
          days following receipt of written notification thereof
          that specifies the manner in which the Company believes
          the Executive has breached such covenants, the Company
          shall have no further obligation to pay Executive any
          benefits otherwise payable under Sections 7(e)(iii), (v)
          and (vi) and the Company shall be entitled to an
          injunction, restraining order or such other equitable
          relief (without the requirement to post a bond)
          restraining Executive from committing any violation of
          the covenants and obligations contained in Section 10(a),
          (b) and (c).  The remedies in the preceding sentence are
          cumulative and are in addition to any other rights and
          remedies the Company may have at law or in equity as an
          arbitrator (or court) shall reasonably determine.

                    (e)  Waiver.  Without limiting the generality
          of the foregoing, upon request of the Executive prior to
          engaging in any conduct otherwise prohibited by this
          Section 10, the Company may, in its sole discretion,
          waive in writing, on such terms and conditions as it may
          deem appropriate, any violation of this Section 10 which
          would otherwise occur due to such conduct.

                    11.  Indemnification; Attorneys' Fees.  The
          Company shall indemnify the Executive to the full extent
          authorized by law and the Charter and By-Laws of the
          Company, as applicable, for all expenses, costs,
          liabilities and legal fees which the Executive may incur
          in the discharge or course of his duties hereunder.  The
          Executive shall be insured under the Company's Directors'
          and Officers' Liability Insurance Policy as in effect
          from time to time.  The Executive shall be deemed a third
          party beneficiary with respect to Section 7.6 of the
          Merger Agreement and, as such, shall have the right to
          enforce such provisions as if he were party to the Merger
          Agreement.  In connection with any dispute or proceeding
          arising under this Agreement where the Executive is
          ultimately the substantially prevailing party, the
          Company shall promptly reimburse Executive for all costs,
          including without limitation the reasonable attorneys'
          fees of any attorney of the Executive's choosing,
          incurred by the Executive in any such dispute or
          proceeding arising under this Agreement.  Any termination
          of the Executive's employment or of this Agreement shall
          have no effect on the continuing operation of this
          Section 11.

                    12.  Successors; Binding Agreement.

                    (a)  Company's Successors.  The Company shall
          require any successor (whether direct or indirect, by
          purchase, merger, consolidation or otherwise) to all or
          substantially all of the business and/or assets of the
          Company to expressly assume and agree to perform this
          Agreement in the same manner and to the same extent that
          the Company would be required to perform it if no such
          succession had taken place.  As used in this Agreement,
          "Company" shall mean the Company as hereinbefore defined
          and any successor to its business and/or assets as
          aforesaid which executes and delivers the agreement
          provided for in this Section 12 or which otherwise
          becomes bound by all the terms and provisions of this
          Agreement by operation of law.  This Agreement shall not
          otherwise be assignable by the Company.

                    (b)  Executive's Successors.  This Agreement
          shall not be assignable by the Executive.  This Agreement
          and all rights of the Executive hereunder shall inure to
          the benefit of and be enforceable by the Executive's
          personal or legal representatives, executors,
          administrators, successors, heirs, distributees, devisees
          and legatees.  Upon the Executive's death, all amounts to
          which he is entitled hereunder, unless otherwise provided
          herein, shall be paid in accordance with the terms of
          this Agreement to the Executive's devisee, legatee, or
          other designee or, if there be no such designee, to the
          Executive's estate.

                    13.  Notices.  For the purpose of this
          Agreement, notices and all other communications provided
          for in the Agreement shall be in writing and shall be
          deemed to have been duly given when delivered or received
          by facsimile or three (3) days after mailing by United
          States certified mail, return receipt requested, postage
          prepaid, addressed, if to the Executive, to the address
          inserted below the Executive's signature on the final
          page hereof and, if to the Company, to the attention of
          the General Counsel except where this Agreement provides
          otherwise.  Notice of change of address or addressee
          shall be effective only upon actual receipt.

                    14.  Disputes.  This Agreement shall be
          construed in accordance with and governed by the law of
          the Commonwealth of Pennsylvania (without regard to
          principles of conflict of laws).  All claims and
          controversies related to or stemming from this Agreement
          or the Executive's employment with the Company, except
          actions for equitable relief pending an arbitration
          award, shall be submitted to binding arbitration in Blue
          Bell, Pennsylvania by a panel of three neutral
          arbitrators under the Commercial Arbitration Rules of the
          American Arbitration Association.  Judgment upon an award
          of the arbitrators may be entered and enforced in any
          court having jurisdiction.

                    15.  Miscellaneous.  No provision of this
          Agreement may be modified, waived or discharged unless
          such waiver, modification or discharge is agreed to in
          writing and signed by the Executive and such officer as
          may be specifically designated by the Board.  No waiver
          by either party hereto at any time of any breach by the
          other party hereto of, or of any lack of compliance with,
          any condition or provision of this Agreement to be
          performed by such other party shall be deemed a waiver of
          similar or dissimilar provisions or conditions at the
          same or at any prior or subsequent time.  All references
          to sections of the Exchange Act or the Code shall be
          deemed also to refer to any successor provisions to such
          sections.  Subject to the provisions of Section 5(j) and
          8 hereof, payments provided for hereunder shall be paid
          net of any applicable withholding required under federal,
          state or local law and any additional withholding to
          which the Executive has agreed.  The obligations of the
          Company and the Executive under this Agreement which by
          their nature may require either partial or total
          performance after the expiration of the Term shall
          survive such expiration.  The invalidity or
          unenforceability of any provision of this Agreement shall
          not affect the validity or enforceability of any other
          provision of this Agreement, which shall remain in full
          force and effect.

                    16.  Counterparts.  This Agreement may be
          executed in one or more counterparts, each of which shall
          be deemed to be an original but all of which together
          will constitute one and the same instrument.

                    17.  Entire Agreement.  This Agreement between
          the Company and the Executive sets forth the entire
          agreement of the parties hereto in respect of the subject
          matter contained herein and supersedes, as of the
          Effective Date, all prior agreements, promises,
          covenants, arrangements, communications, representations
          or warranties, whether oral or written, by the parties
          hereto in respect of the subject matter contained herein;
          and any prior agreement of the parties hereto in respect
          of the subject matter contained herein shall be
          terminated and canceled as of the Effective Date.


                    IN WITNESS WHEREOF, the parties hereto have
          executed this Agreement on March 30, 1996 to be effective
          as of the Effective Date.

                                   U.S. Healthcare

                                   By:_______________________
                                      Name:
                                      Title:

                                   __________________________
                                   Michael Cardillo

                                   __________________________
                                   __________________________
                                   __________________________
                                   Address of Executive

           







                             EMPLOYMENT AGREEMENT

                    AGREEMENT, dated as of March 30, 1996, by and
          between David Simon (the "Executive") and U.S.
          Healthcare, Inc., a Pennsylvania corporation ("U.S.
          Healthcare" or the "Company").

                    WHEREAS, the Board of Directors of the Company
          (the "Board") and the Executive each desires that the
          Executive continue to furnish services to the Company on
          the terms and conditions hereinafter set forth; and

                    WHEREAS, the parties desire to enter into this
          agreement setting forth the terms and conditions of the
          continued employment of the Executive with the Company;

                    NOW, THEREFORE, in consideration of the
          premises and the mutual agreements set forth below, and
          intending to be legally bound hereby, the parties hereto
          hereby agree as follows:

                    1.  Employment.  The Company hereby agrees to
          employ the Executive, and the Executive hereby accepts
          such employment, on the terms and conditions hereinafter
          set forth.

                    2.  Term; Parties.  (a) Term.  The term of this
          Agreement (as extended from time to time, the "Term")
          shall commence on the date (the "Effective Date") of
          execution of the Agreement and Plan of Merger (the
          "Merger Agreement"), dated March 30, 1996, by and among
          the Company, Aetna Life and Casualty Company ("Aetna")
          and Butterfly, Inc. ("Parent"), and shall end on the
          fifth anniversary of the consummation of the merger
          contemplated by the Merger Agreement (the "Merger Date")
          or, if such merger is not consummated, the Effective
          Date, unless further extended as provided in this Section
          2 or sooner terminated in the event that Executive's
          employment is terminated pursuant to Section 6. 
          Commencing on the fifth anniversary of the Merger Date
          (or, if there is no Merger Date, on the fifth anniversary
          of the Effective Date) and on each such subsequent
          anniversary, the Term shall automatically be extended for
          one additional year unless, not later than 180 days prior
          to such anniversary, the Company or the Executive shall
          have given notice not to extend the Term.  The giving by
          the Company of a notice not to extend the Term shall not
          constitute a termination without Cause or a termination
          for Good Reason (each as defined in Section 6).

                    (b)  Parties.  On and after the Merger Date,
          this Agreement shall be assigned to and assumed by Parent
          and all references herein to the Company shall mean
          Parent.  On and after the Merger Date, to the extent that
          the Executive's employment is with U.S. Healthcare or
          Aetna, the obligation of the Company hereunder shall
          include the obligation to cause U.S. Healthcare or Aetna
          to act in accordance with the terms hereof.

                    3.  Position and Duties.  Prior to the Merger
          Date, the Executive shall serve as an employee of U.S.
          Healthcare with the title of Chief Legal and Regulatory
          Affairs Officer of U.S. Healthcare, shall report directly
          to the Co-Presidents and shall be responsible for all
          legal, compliance, regulatory and governmental relations
          matters relating to the lines of business and operations
          of U.S. Healthcare (including but not limited to all HMO,
          POS, indemnity health insurance and other lines of
          business and operations, the "Business").  

                    From and after the Merger Date, the Business
          shall also include all of the domestic (U.S.) lines of
          business and operations of Aetna Health Plans (including
          but not limited to all Health, Specialty Health and Group
          Insurance lines of business and operations), and the
          Executive shall assume a similar position and similar
          responsibilities in matters relating to the Business
          except as may otherwise be mutually agreed upon between
          the Executive and the Co-Presidents of the Business.  

                    During the Term, the Executive shall report
          directly and exclusively to the Co-Presidents of the
          Business.  The Executive agrees to devote substantially
          all his full working time, attention and energies during
          normal business hours to the performance of his duties
          for the Company, provided that the Executive may continue
          to participate and engage in activities not associated
          with the Company consistent with the Executive's past
          practices at U.S. Healthcare.

                    4.  Place of Performance.  The principal place
          of employment and office of the Executive shall be in
          Blue Bell, Pennsylvania, or such other location as may be
          agreed to in writing by the Executive.

                    5.  Compensation and Related Matters.

                    (a)  Base Salary.  As compensation for the
          performance by the Executive of his duties hereunder, the
          Company shall pay the Executive a base salary at an
          annual rate that is no less than the Executive's annual
          salary rate for 1996, including any deferred compensation
          and interest or earnings on such year's deferred
          compensation under the Company's current deferred
          compensation program (such amount, as from time to time
          in effect, hereinafter referred to as "Base Salary"). 
          Base Salary shall be payable in accordance with U.S.
          Healthcare's normal payroll practices, shall be reviewed
          annually and may be increased upon such review.  Base
          Salary, once increased, may not be decreased.

                    (b)  Annual Bonus.  The Executive shall be
          entitled to an annual bonus upon the attainment by the
          Company, U.S. Healthcare and/or the Business of
          reasonable performance goals, established in accordance
          with the past practice of U.S. Healthcare.  The
          Executive's target bonus shall be equal to 80% of Base
          Salary, with appropriate increases or decreases upon the
          attainment of specified levels of Company, U.S.
          Healthcare and/or Business performance (such bonus
          hereinafter referred to as the "Annual Bonus"); provided,
          however, that with respect to fiscal year 1997, in no
          event shall the Annual Bonus be less than 100% of target. 
          If the Merger Date occurs during the fiscal year
          commencing in 1996, the Company shall pay to the
          Executive for such 1996 fiscal year 100% of the bonus
          which he would have received for the entire 1996 fiscal
          year as determined by U.S. Healthcare.

                    (c)  Sign-On Bonus.  Upon the Merger Date, the
          Company shall pay the Executive, in cash, an amount equal
          to the sum of (i) the Executive's then-current base
          salary (including deferred compensation and interest or
          earnings on such year's deferred compensation) and (ii)
          the aggregate value of the annual bonus paid or awarded
          (in cash and in shares of U.S. Healthcare common stock)
          to the Executive in respect of 1995, or, if the Merger
          Date is subsequent to December 31, 1996 and if the
          aggregate value of the annual bonus so paid or awarded to
          the Executive in respect of 1996 is higher, such 1996
          annual bonus (the sum of such amounts hereinafter
          referred to as the "Sign-On Bonus").

                    (d)  Stay Bonus.  The Executive shall be
          granted, as of the Merger Date, that number of restricted
          shares of common stock of Parent ("Parent Stock") which,
          when multiplied by the average closing price per share of
          Parent Stock on the ten trading dates immediately
          following the Merger Date, shall be equal in amount to
          the Sign-On Bonus (the "Restricted Stock Award").  The
          Restricted Stock Award shall be granted pursuant to a
          plan (i) that meets the requirements of Rule 16b-3
          promulgated under Section 16 of the Securities Exchange
          Act of 1934, as amended (the "Exchange Act"), (ii) the
          terms of which are acceptable to U.S. Healthcare and
          (iii) the shares of Company Stock reserved for issuance
          under which shall be registered in a timely manner on a
          Form S-8 (the "Plan").  Notwithstanding any provision of
          this Agreement to the contrary, the Restricted Stock
          Award shall become vested (i.e., all restrictions with
          respect thereto shall lapse) on the earliest to occur of
          (x) the second anniversary of the Merger Date, (y) a
          "change in control of Parent" (as defined in the Plan)
          following the Merger Date, or (z) upon termination of the
          Executive's employment by reason of death or Disability
          (as defined in Section 6 hereof), by the Company other
          than for Cause (as defined in Section 6 hereof) or by the
          Executive for Good Reason (as defined in Section 6
          hereof).  If the Executive's employment is terminated by
          the Executive without Good Reason or by the Company for
          Cause prior to the second anniversary of the Merger Date,
          the Restricted Stock Award shall be forfeited in full. 
          The Restricted Stock Award shall be subject to all other
          terms and conditions of the Plan, the rules and
          regulations thereunder, the applicable provisions of this
          Agreement and the document evidencing its terms and
          conditions reasonably acceptable to Executive.  The
          Restricted Stock Award is in addition to any other equity
          award made to the Executive under paragraph (e) of this
          Section 5 and shall not be offset against or reduce such
          award or any other award, benefit or amount due under
          this Agreement.

                    (e)  Future Equity Grants.  In addition to the
          Restricted Stock Award made pursuant to subsection (d) of
          this Section 6, the Executive shall from time to time be
          granted stock options and shares of restricted stock or
          other equity-based awards (collectively, "Equity Grants")
          on a basis no less favorable than such grants are made to
          similarly situated senior officers of the Company. 
          Without limiting the generality of the foregoing, if the
          Merger Date occurs after Parent has granted awards in
          respect of calendar year 1997, the Executive shall be
          entitled to receive an Equity Grant in respect of 1997. 

                    (f)  Expenses.  The Company shall reimburse the
          Executive for all reasonable business expenses, subject
          to the applicable policies and procedures of the Company
          then in force.

                    (g)  Vacation.  The Executive shall be entitled
          to 20 vacation days and that number of personal days and
          holidays as is consistent with U.S. Healthcare's current
          practices (including, with respect to up to the greater
          of 25 days or the number of days the Executive has
          accrued at the Effective Date, cash compensation in lieu
          thereof upon termination or expiration of this Agreement)
          or, if more favorable to the Executive, in accordance
          with the policies applicable generally to senior
          executives of the Company or any of its subsidiaries.

                    (h)  Services Furnished.  The Company shall
          furnish the Executive with appropriate office space and
          such other facilities and services as shall be suitable
          to the Executive's position and adequate for the
          performance of his duties as set forth in Section 3
          hereof and on a basis at least as favorable as in effect
          immediately prior to the Merger Date, such office space
          and other facilities and services to be furnished at the
          location set forth in Section 4 hereof.

                    (i)  Other Benefits.  The Company shall provide
          to the Executive such employee benefit plans and
          arrangements as are generally available to senior
          officers of the Company and its subsidiaries, including
          but not limited to retirement benefits, group life
          insurance, medical and dental insurance, and accident and
          disability insurance, which shall be provided on a basis
          reasonably comparable in the aggregate to those provided
          to him immediately prior to the Merger Date or, if more
          favorable to the Executive in the aggregate, to those
          provided to other senior officers of the Company and its
          subsidiaries.

                    (j)  Restrictions on Sale of Securities;
          Payment of Taxes.  From the date hereof to the earlier of
          the Merger Date or the date on which the transaction
          contemplated by the Merger Agreement is abandoned, the
          Executive agrees that he will not sell or otherwise
          dispose of any shares of the common stock of U.S.
          Healthcare ("U.S. Healthcare Stock"), including shares
          subject to option, except for the partial cash-out of
          such shares and options in connection with the
          transaction contemplated by the Merger Agreement.  During
          the one-year period following the Merger Date, the
          Executive agrees that, so long as he remains employed by
          the Company or any of its subsidiaries, he will not sell
          or otherwise dispose of any shares or option shares of
          Parent Stock.  Nothing herein shall prohibit the
          Executive from transferring any shares of U.S. Healthcare
          Stock or Parent Stock to a "Permitted Transferee," as
          defined in Article 5A.III of the U.S. Healthcare Articles
          of Incorporation.  In consideration of the Executive's
          agreement under this Section 5, the Company shall
          promptly reimburse the Executive for any and all income,
          wage and employment taxes (and any and all income and
          employment taxes on the reimbursement amount), payable by
          the Executive as the result of the acceleration of the
          vesting of restricted shares of U.S. Healthcare Stock on
          the Effective Date or as the result of the partial cash-
          out of shares of U.S. Healthcare Stock still subject to
          option on the Merger Date.  In no event shall Executive
          be reimbursed for any income, wage or employment taxes
          that result from the exercise of any options.

                    6.  Termination.  The Executive's employment
          hereunder may be terminated as follows:

                    (a)  Death.  The Executive's employment shall
          terminate upon his death, and the date of his death shall
          be the Date of Termination.

                    (b)  Disability.  If, as a result of the
          Executive's incapacity due to physical or mental illness
          (as determined by a medical doctor mutually agreed to by
          the Executive or his legal representative and the
          Company), the Executive shall have been absent from his
          duties hereunder on a full-time basis for the entire
          period of six consecutive months and, within thirty (30)
          days after written Notice of Termination (as defined in
          subsection (f) of this Section 6) is given, shall not
          have returned to the performance of his duties hereunder
          on a full-time basis ("Disability"), the Company may
          terminate the Executive's employment hereunder.  In this
          event, the Date of Termination shall be thirty (30) days
          after Notice of Termination is given (provided that the
          Executive shall not have returned to the performance of
          his duties on a full-time basis during such thirty (30)
          day period).

                    (c)  Cause.  The Company may terminate the
          Executive's employment in the event there occurs one or
          more of the following events that has not been cured (if
          curable) within thirty (30) days after written notice
          thereof has been given by the Company to the Executive
          ("Cause"); provided that the Company shall have delivered
          a written notice to the Executive within 120 days of its
          having actual knowledge of the occurrence of any of such
          events stating that the Company intends to terminate the
          Executive's employment for Cause and specifying the
          factual basis for such termination:

                         (i) the willful failure by the Executive
               to perform substantially the Executive's duties as
               an employee of the Company (other than due to
               physical or mental illness or after the delivery of
               a Notice of Termination for Good Reason by the
               Executive pursuant to subsection (f) of this Section
               6); 

                         (ii) the Executive's engaging in
               misconduct that is materially injurious to the
               Company or any subsidiary or any affiliate of the
               Company;

                         (iii) the Executive's having been
               convicted of, or entered a plea of nolo contendere
               to, a crime that constitutes a felony;

                         (iv) the material breach by the Executive
               of any written covenant or agreement not to compete
               with the Company or any subsidiary or any affiliate;
               or 

                         (v) the breach by the Executive of his
               duty of loyalty to the Company which shall include,
               without limitation (A) the disclosure by the
               Executive of any confidential information pertaining
               to the Company or any subsidiary or any affiliate of
               the Company, other than (x) in the ordinary course
               of the performance of his duties on behalf of the
               Company or (y) pursuant to a judicial or
               administrative subpoena from a court or governmental
               authority with jurisdiction over the matter in
               question, (B) the harmful interference by the
               Executive in the business or operations of the
               Company or any subsidiary or any affiliate of the
               Company, (C) any attempt by the Executive to induce
               any employee, insurance agent, insurance broker or
               broker-dealer of the Company or any subsidiary or
               any affiliate to be employed or perform services
               elsewhere, other than actions taken by the Executive
               that are intended to benefit the Company or any
               subsidiary or affiliate and do not benefit the
               Executive financially other than as an employee or
               stockholder of the Company, (D) any attempt by the
               Executive to solicit the trade of any customer or
               supplier, or prospective customer or supplier, of
               the Company on behalf of any person other than the
               Company or a subsidiary thereof, other than actions
               taken by the Executive that are intended to benefit
               the Company or any subsidiary or affiliate and do
               not benefit the Executive financially other than as
               an employee or stockholder of the Company, provided,
               however, that this provision shall only apply to any
               product or service which is in competition with a
               product or service of the Company or any subsidiary
               or affiliate thereof or (E) following the Merger
               Date, any breach or violation of the Company's Code
               of Conduct, as amended from time to time sufficient
               to warrant a for Cause termination consistent with
               the Company's past practice, consistently applied.

          Notwithstanding the foregoing, (x) the failure of the
          Executive, the Company, U.S. Healthcare or the Business
          to achieve any particular level of performance shall not,
          in and of itself, constitute Cause hereunder, (y) neither
          a breach of the Executive's duty of loyalty to the
          Company as described in subclause (A) nor a breach of the
          Company's Code of Conduct as described in subclause (E)
          shall constitute Cause hereunder unless such breach has
          had or could reasonably be expected to have a significant
          adverse effect on the business or reputation of the
          Company and (z) the occurrence of any of the events
          described above, if done inadvertently or of de minimis
          effect, shall not constitute "Cause". 

                    (d)  Good Reason.  The Executive may terminate
          his employment in the event there occurs one or more of
          the following events, without the written consent of the
          Executive, that has not been cured (if curable) within
          thirty (30) days after written notice thereof has been
          given by the Executive to the Company ("Good Reason");
          provided that the Executive shall have delivered a
          written notice to the Chief Executive Officer of the
          Company within 120 days of his having actual knowledge of
          the occurrence of the event or events constituting Good
          Reason stating that he intends to terminate his
          employment for Good Reason and specifying the factual
          basis for such termination:

                         (i)  a reduction in the Executive's annual
               Base Salary or incentive compensation opportunity as
               provided under Sections 5(a) and (b);

                        (ii)  a reduction in the Executive's
               positions, an adverse change in the Executive's
               reporting relationship or a material reduction in
               the Executive's duties and responsibilities, in each
               case from those described in Section 3 hereof;

                       (iii)  the relocation of the Executive's
               principal place of employment to a location more
               than 20 miles from the location at which he
               performed his principal duties on the date
               immediately prior to such relocation, or requiring
               the Executive to perform the principal portion of
               his duties in the greater Hartford, Connecticut
               area;

                        (iv)  a breach of the obligation to provide
               the Executive with the benefits required to be
               provided in accordance with Section 5(i);

                         (v)  a failure by the Company to pay any
               amounts due and owing to the Executive within 10
               days following written notice from the Executive of
               such failure to pay; 

                        (vi)  any other material breach of the
               Company's obligations to the Executive hereunder
               that materially affects the compensation or benefits
               payable to Executive or materially impairs the
               Executive's ability to perform the duties and
               responsibilities of his position;

                         (vii)  the failure of the Company to
               obtain the assumption and agreement in writing of
               its obligation to perform this Agreement in
               accordance with Section 12(a) hereof (A) by Parent
               on the Merger Date and (B) following the Merger
               Date, by any successor to Parent on the effective
               date of such succession; or

                         (viii)  a breach of Section 7.11(c) of the
               Merger Agreement.

          The Executive's continued employment shall not constitute
          consent to, or a waiver of rights with respect to, any
          act or failure to act constituting Good Reason hereunder. 
          In the event of a termination for Good Reason, the Date
          of Termination shall be the date specified in the Notice
          of Termination, which shall be no more than thirty (30)
          days after the Notice of Termination.

                    (e)  Other Terminations.  If the Executive's
          employment is terminated hereunder for any reason other
          than as set forth in subsections (a) through (d) of this
          Section 6, the date on which a Notice of Termination is
          given or any later date (within 30 days) set forth in
          such Notice of Termination shall be the Date of
          Termination.

                    (f)  Notice of Termination.  Any purported
          termination of the Executive's employment (other than
          termination pursuant to subsection (a) of this Section 6)
          shall be communicated by written Notice of Termination to
          the other party hereto in accordance with Section 13
          hereof.  For purposes of this Agreement, a "Notice of
          Termination" shall mean a notice that shall indicate the
          specific termination provision in this Agreement relied
          upon and shall set forth in reasonable detail the facts
          and circumstances claimed to provide a basis for
          termination of the Executive's employment under the
          provision so indicated.
          In addition, prior to the second anniversary of the
          Merger Date, a Notice of Termination is required to be
          signed by the Co-Presidents.

                    (g)  Dispute Concerning Termination.  If within
          fifteen (15) days after any Notice of Termination (other
          than with respect to a termination of the Executive's
          employment by the Company without Cause) is given, or, if
          later, prior to the Date of Termination (as determined
          without regard to this Section 6(g)), the party receiving
          such Notice of Termination notifies the other party that
          a dispute exists concerning the termination, the Date of
          Termination shall be extended until the earlier of (i)
          the date on which the Term ends or (ii) the date on which
          the dispute is finally resolved, either by mutual written
          agreement of the parties or by binding arbitration;
          provided, however, that the Date of Termination shall be
          extended by a notice of dispute given by the Executive
          only if such notice is given in good faith and the
          Executive pursues the resolution of such dispute with
          reasonable diligence.

                    (h)  Compensation During Dispute.  If the Date
          of Termination is extended in accordance with subsection
          (g) of this Section 6, the Company shall continue to pay
          the Executive the full compensation in effect when the
          notice giving rise to the dispute was given (including,
          but not limited to, Base Salary and Annual Bonus) and
          continue the Executive as a participant in all
          compensation, benefit and insurance plans in which the
          Executive was participating when the notice giving rise
          to the dispute was given, until the Date of Termination,
          as determined in accordance with subsection (g) of this
          Section 6.  Amounts paid under this Section 6(h) shall
          not be offset against or reduce any other amounts due
          under Section 7 of this Agreement.

                    7.  Compensation During Disability or Upon
          Termination.

                    (a)  Disability Period.  During any period that
          the Executive fails to perform his duties hereunder as a
          result of incapacity due to physical or mental illness
          ("Disability Period"), the Executive shall continue to
          (i) receive his full Base Salary, (ii) remain eligible to
          receive an Annual Bonus under Section 5(b) hereof, and
          (iii) participate in the programs described in Section
          5(i) hereof (except to the extent such participation is
          not permitted under the terms of such programs).  Such
          payments made to the Executive during the Disability
          Period shall be reduced by the sum of the amounts, if
          any, payable to the Executive at or prior to the time of
          any such payment under disability benefit plans of the
          Company or under the Social Security disability insurance
          program, and which amounts were not previously applied to
          reduce any such payment.

                    (b)  Death.  If the Executive's employment
          hereunder is terminated as a result of death, then:

                         (i)  the Company shall pay the Executive's
               estate or designated beneficiary, as soon as
               practicable after the Date of Termination, (A) any
               amounts earned, accrued or owing the Executive
               hereunder for services prior to the Date of
               Termination (including accrued deferred compensation
               and unused vacation and personal time) and (B) for a
               period of one year following the Date of
               Termination, such Base Salary and Annual Bonus as
               the Executive would have received during such period
               had he remained in the employ of the Company;

                        (ii)  the vesting and exercisability of all
               then outstanding equity-based awards shall be
               governed, as applicable, in accordance with Section
               5(d) of this Agreement or the terms of the U.S.
               Healthcare or Aetna, as the case may be, document
               under which they were initially granted (except that
               the vesting of awards granted under the U.S.
               Healthcare incentive plans prior to the Effective
               Date shall be governed by Section 1.7 of the Merger
               Agreement); and

                       (iii)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    (c)  Disability.  If the Executive's employment
          hereunder is terminated as a result of Disability, then:

                         (i)  the Company shall pay the Executive,
               as soon as practicable after the Date of
               Termination, (A) any amounts earned, accrued or
               owing the Executive hereunder for services prior to
               the Date of Termination (including accrued deferred
               compensation and unused vacation and personal time)
               and (B) for a period of one year following the Date
               of Termination, such Base Salary and Annual Bonus as
               the Executive would have received during such period
               had he remained in the employ of the Company, offset
               by any amounts received by the Executive pursuant to
               subsection (ii) of this Section 7(c);

                        (ii)  the Executive shall receive, until
               the date the Executive reaches age 65 or, if
               earlier, until his death, the salary-related
               disability benefits provided in accordance with, and
               subject to the conditions of, the long-term
               disability program then in effect for senior
               executives of the Company;

                        (iii)  the vesting and exercisability of
               all then outstanding equity-based awards shall be
               governed, as applicable, in accordance with Section
               5(d) of this Agreement or the terms of the U.S.
               Healthcare or Aetna, as the case may be, document
               under which they were initially granted (except that
               the vesting of awards granted under the U.S.
               Healthcare incentive plans prior to the Effective
               Date shall be governed by Section 1.7 of the Merger
               Agreement); and

                        (iv)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    (d)  Termination by Company for Cause or By
          Executive other than for Good Reason.  If the Executive's
          employment hereunder is terminated by the Company for
          Cause or by the Executive (other than for Good Reason),
          then:

                         (i)  the Company shall pay the Executive,
               as soon as practicable after the Date of
               Termination, any amounts earned, accrued or owing
               the Executive hereunder for services prior to the
               Date of Termination (including accrued deferred
               compensation and unused vacation and personal time);

                        (ii)  the vesting and exercisability of all
               then outstanding equity-based awards shall be
               governed, as applicable, in accordance with Section
               5(d) of this Agreement or the terms of the U.S.
               Healthcare or Aetna, as the case may be, document
               under which they were initially granted (except that
               the vesting of awards granted under the U.S.
               Healthcare incentive plans prior to the Effective
               Date shall be governed by Section 1.7 of the Merger
               Agreement); and

                       (iii)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    (e)  Termination by Company without Cause or by
          the Executive with Good Reason.  If the Executive's
          employment hereunder is terminated by the Company (other
          than for Cause or Disability) or by the Executive for
          Good Reason, then:

                         (i)  the Company shall pay the Executive,
               as soon as practicable after the Date of
               Termination, any amounts earned, accrued or owing
               the Executive hereunder for services prior to the
               Date of Termination (including accrued deferred
               compensation and unused vacation and personal time);

                        (ii)  notwithstanding any provision of any
               annual bonus plan to the contrary, the Company shall
               pay to the Executive, as soon as practicable after
               the Date of Termination, a lump sum amount, in cash,
               equal to the sum of (A) any annual bonus which has
               been allocated or awarded to the Executive for a
               completed fiscal year preceding the Date of
               Termination under any such plan and which, as of the
               Date of Termination, is contingent only upon the
               continued employment of the Executive to a
               subsequent date, and (B) a pro rata portion to the
               Date of Termination of the aggregate value of all
               contingent annual bonus awards to the Executive for
               all then uncompleted fiscal years (other than the
               fiscal year commencing in 1996) under any such plan,
               calculated as to each such award by multiplying the
               award that the Executive would have earned for the
               entire performance award period, assuming the
               achievement, at the target level, of the individual
               and corporate performance goals established with
               respect to such award, by the fraction (the
               "Fraction") obtained by dividing the number of full
               months and any fractional portion of a month during
               such performance award period through the Date of
               Termination by the total number of months contained
               in such performance award period; provided, however,
               that, in the event that the Executive's actual award
               (the "Actual Award") would have exceeded the target
               award had he remained in the employ of the Company
               until the end of any such performance award period,
               then the Company shall pay the Executive, as soon as
               practicable following the end of such period, an
               amount equal to the product of the Fraction and the
               excess of the Actual Award over the target award;
               and

                       (iii)  the Company shall pay to the
               Executive a severance payment in cash, 50% of which
               is payable in a lump sum on the Date of Termination
               and, subject to the Executive's continued compliance
               with the applicable provisions of Section 10 hereof
               (provided that the Executive be given an opportunity
               to cure (if curable) any breach of such Section 10
               in accordance with Section 10(d) hereof), the
               remaining 50% of which is payable in a lump sum on
               the first anniversary of the Date of Termination,
               equal to three times the sum of (A) the higher of
               the Executive's Base Salary as in effect immediately
               prior to the occurrence of the event or circumstance
               upon which the Notice of Termination is based and
               the Executive's annual base salary (including
               amounts deferred and any interest accrued thereon)
               in effect immediately prior to the Merger Date, and
               (B) the then current target annual bonus;

                        (iv)  (A) the exercisability of all then
               outstanding equity-based awards granted under the
               U.S. Healthcare incentive plans prior to the Merger
               Date shall be governed in accordance with the terms
               of such U.S. Healthcare incentive plans, (B) the
               vesting of restricted stock awards granted pursuant
               to Section 5(d) shall be governed in accordance with
               the terms of such Section and (C) all then
               outstanding equity-based awards granted under the
               Parent incentive plans shall continue to vest over
               the one year period following the Date of
               Termination and be exercisable through the 90 day
               period following such one year period;

                         (v)  for the thirty-six (36) month period
               immediately following the Date of Termination, the
               Company shall arrange to provide the Executive with
               life, disability, accident and health insurance
               benefits ("Insurance Benefits") and with pension
               plan benefits substantially similar, and on
               substantially similar terms, to those which the
               Executive is receiving immediately prior to the
               Notice of Termination or the economic equivalent
               thereof, which provision of Insurance Benefits shall
               satisfy all of the conditions necessary to avoid the
               imposition of any tax under section 4980B of the
               Code.  Insurance Benefits otherwise receivable by
               the Executive pursuant to this Section 7(e)(v) shall
               be reduced to the extent comparable benefits are
               actually received by, or made available to, the
               Executive without cost during the thirty-six (36)
               month period following the Executive's termination
               of employment (and any such benefits actually
               received by or made available to the Executive shall
               be reported to the Company by the Executive);

                        (vi)  if the Executive would have become
               entitled to benefits under the Company's
               postretirement health care or life insurance plans,
               as in effect immediately prior to the Effective Date
               (or, if there is a Merger Date, immediately prior to
               the Merger Date) or the Date of Termination
               (whichever is more favorable to the Executive), had
               the Executive's employment terminated on the date
               which is thirty-six (36) months after the Date of
               Termination, the Company shall provide such
               postretirement health care or life insurance
               benefits to the Executive and the Executive's
               dependents commencing on the later of (A) the date
               on which such coverage would have first become
               available (disregarding for these purposes the
               thirty-six (36) month period referred to above) and
               (B) the date on which benefits described in
               subsection (v) of this Section 7(e) shall terminate;
               and

                       (vii)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    8.  Gross-Up for Excise Tax.  (a)  Whether or
          not the Executive becomes entitled to any payments under
          Section 7 hereof, if any payments or benefits received or
          to be received by the Executive (whether pursuant to
          Section 5 hereof or any other provision of this Agreement
          or any other plan, arrangement or agreement with the
          Company or, with respect to his employment by the
          Company, with any other person (such payments or
          benefits, excluding the Gross-Up Payment described
          herein, being hereinafter referred to as the "Total
          Payments") will be subject to any excise tax imposed
          under section 4999 of the Internal Revenue Code of 1986,
          as amended (the "Excise Tax"), the Company shall pay to
          the Executive an additional amount (the "Gross-Up
          Payment") such that the net amount retained by the
          Executive, after deduction of any Excise Tax on the Total
          Payments and any federal, state and local income and
          employment taxes and Excise Tax upon the Gross-Up
          Payment, shall be equal to the Total Payments.

                    (b)  For purposes of determining whether any of
          the Total Payments will be subject to the Excise Tax and
          the amount of such Excise Tax, (i) all of the Total
          Payments shall be treated as "parachute payments" (within
          the meaning of section 280G(b)(2) of the Code) unless, in
          the opinion of Tax Counsel, a reasonable basis exists for
          determining that such payments or benefits (in whole or
          in part) do not constitute parachute payments, including
          by reason of section 280G(b)(4)(A) of the Code, (ii) all
          "excess parachute payments" within the meaning of section
          280G(b)(1) of the Code shall be treated as subject to the
          Excise Tax unless, in the opinion of Tax Counsel, a
          reasonable basis exists for determining that such excess
          parachute payments (in whole or in part) represent
          reasonable compensation for services actually rendered
          (within the meaning of section 280G(b)(4)(B) of the Code)
          in excess of the "base amount" (within the meaning of
          section 280G(b)(3) of the Code) allocable to such
          reasonable compensation, or are otherwise not subject to
          the Excise Tax, and (iii) the value of any noncash
          benefits or any deferred payment or benefit shall be
          determined by the Auditor in accordance with the
          principles of sections 280G(d)(3) and (4) of the Code. 
          For purposes of determining the amount of the Gross-Up
          Payment, the Executive shall be deemed to pay federal
          income tax at the highest marginal rate of federal income
          taxation in the calendar year in which the Gross-Up
          Payment is to be made and state and local income taxes at
          the highest marginal rate of taxation in the state and
          locality of the Executive's residence on the Date of
          Termination (or if there is no Date of Termination, then
          the date on which the Gross-Up Payment is calculated for
          purposes of this Section 8), net of the maximum reduction
          in federal income taxes which could be obtained from
          deduction of such state and local taxes.

                    (c)  In the event that the Excise Tax is
          finally determined to be less than the amount taken into
          account hereunder in calculating the Gross-Up Payment,
          the Executive shall repay to the Company, at the time
          that the amount of such reduction in Excise Tax is
          finally determined, the portion of the Gross-Up Payment
          attributable to such reduction (plus that portion of the
          Gross-Up Payment attributable to the Excise Tax and
          federal, state and local income and employment taxes
          imposed on the Gross-Up Payment being repaid by the
          Executive to the extent that such repayment results in a
          reduction in Excise Tax and/or a federal, state or local
          income or employment tax deduction) plus interest on the
          amount of such repayment at 120% of the rate provided in
          section 1274(b)(2)(B) of the Code.  In the event that the
          Excise Tax is determined to exceed the amount taken into
          account hereunder in calculating the Gross-Up Payment
          (including by reason of any payment the existence or
          amount of which cannot be determined at the time of the
          Gross-Up Payment), the Company shall make an additional
          Gross-Up Payment in respect of such excess (plus any
          interest, penalties or additions payable by the Executive
          with respect to such excess) at the time that the amount
          of such excess is finally determined.  The Executive and
          the Company shall each reasonably cooperate with the
          other in connection with any administrative or judicial
          proceedings concerning the existence or amount of
          liability for Excise Tax with respect to the Total
          Payments.

                    9.  Mitigation.  The Executive shall not be
          required to mitigate amounts payable pursuant to Section
          7 hereof by seeking other employment or otherwise, nor,
          except as provided in Section 7(e)(v), shall there be any
          offset against such payments on account of (a) any
          remuneration attributable to any subsequent employment
          that he may obtain or (b) any claims the Company may have
          against the Executive.

                    10.  Noncompetition and Confidentiality.

                    (a)  Noncompetition.  Prior to, and for a
          period of one year following, termination of the
          Executive's employment during the Term other than by the
          Company without Cause or by the Executive for Good
          Reason, the Executive shall not become associated,
          whether as a principal, partner, employee, consultant or
          shareholder (other than as a holder of not in excess of
          1% of the outstanding voting shares of any publicly
          traded company), with any entity that is actively engaged
          in any geographic area in any business which is in
          substantial and direct competition with the Business;
          provided, however, nothing in this Section 10(a) shall
          preclude the Executive from performing services solely
          and exclusively for a division or subsidiary of such an
          entity that is engaged in a noncompetitive business.

                    (b)  Nondisclosure, Nonsolicitation and
          Cooperation.

                         (i)  the Executive shall not (except to
               the extent required by an order of a court having
               competent jurisdiction or under subpoena from an
               appropriate government agency) disclose to any third
               person, whether during or subsequent to the
               Executive's employment with the Company, any trade
               secrets; customer lists; product development and
               related information; marketing plans and related
               information; sales plans and related information;
               operating policies and manuals; business plans;
               financial records; or other financial, commercial,
               business or technical information related to the
               Company or any subsidiary or affiliate thereof
               unless such information has been previously
               disclosed to the public by the Company or has become
               public knowledge other than by a breach of this
               Agreement; provided, however, that this limitation
               shall not apply to any such disclosure made while
               the Executive is employed by the Company, or any
               subsidiary or affiliate thereof in the ordinary
               course of the performance of the Executive's duties;

                        (ii)  prior to, and for two years
               following, termination of the Executive's employment
               during the Term, the Executive shall not attempt to
               induce any employee or Insurance Agent (as defined
               below) employed by or performing services for the
               Business to be employed or perform services
               elsewhere, provided that this covenant shall not
               preclude the Executive from taking any actions
               during the Term that (x) are intended to benefit the
               Company or any subsidiary or affiliate and (y) do
               not benefit the Executive financially other than as
               an employee or stockholder of the Company;

                       (iii)  prior to, and for two years
               following, termination of the Executive's employment
               during the Term, the Executive shall not attempt to
               induce any insurance agent or agency, insurance
               broker, broker-dealer or supplier of the Business to
               cease providing services to the Business, provided
               that this covenant shall not preclude the Executive
               from taking any actions during the Term that (x) are
               intended to benefit the Company or any subsidiary or
               affiliate and (y) do not benefit the Executive
               financially other than as an employee or stockholder
               of the Company; and

                        (iv)  prior to, and for two years
               following, termination of the Executive's employment
               during the Term, the Executive shall not attempt to
               solicit, on behalf of any person or entity other
               than the Business, the trade of any individual or
               entity which, at the time of the solicitation, is a
               customer of the Business, or which the Business is
               undertaking reasonable steps to procure as a
               customer at the time of or immediately preceding
               termination of the Term; provided, however, that
               this limitation shall only apply to (x) any product
               or service which is in competition with a product or
               service of the Business and (y) with respect to any
               customer with whom the Executive has or had (by
               virtue of the Executive's position or otherwise) a
               personal relationship.

          Solely for purposes of subsection (b)(ii) of this Section
          10, the term "Insurance Agent" shall mean those insurance
          agents or agencies representing the Company or any
          subsidiary or affiliate thereof, that are exclusive or
          career agents or agencies of the Company or any
          subsidiary or affiliate thereof, or any insurance agents
          or agencies which derive 50% or more of their business
          revenue from the Company or any subsidiary or affiliate
          thereof (calculated on an aggregate basis for the 12-
          month period prior to the date of determination or such
          other similar period for which such information is more
          readily available).

                    (c)  Company Property.  Promptly following the
          Executive's termination of the Executive's employment,
          the Executive shall return to the Company all property of
          the Company, and all copies thereof in the Executive's
          possession or under his control.

                    (d)  Intention of the Parties.  If any
          provision of Section 10 is determined by an arbitrator
          (or a court of competent jurisdiction asked to enforce
          the decision of the arbitrator) not to be enforceable in
          the manner set forth in this Agreement, the Company and
          Executive agree that it is the intention of the parties
          that such provision should be enforceable to the maximum
          extent possible under applicable law and that such
          arbitrator (or court) shall reform such provision to make
          it enforceable in accordance with the intent of the
          parties.  Executive acknowledges that a material part of
          the inducement for the Company to provide the salary and
          benefits evidenced hereby is Executive's covenants set
          forth in Section 10(a), (b) and (c) and that the
          covenants and obligations of Executive with respect to
          nondisclosure and nonsolicitation relate to special,
          unique and extraordinary matters and that a violation of
          any of the terms of such covenants and obligations will
          cause the Company irreparable injury for which adequate
          remedies are not available at law.  Therefore, Executive
          agrees that, if Executive shall materially breach any of
          those covenants following termination of employment and
          such breach is not cured (if curable) within ten (10)
          days following receipt of written notification thereof
          that specifies the manner in which the Company believes
          the Executive has breached such covenants, the Company
          shall have no further obligation to pay Executive any
          benefits otherwise payable under Sections 7(e)(iii), (v)
          and (vi) and the Company shall be entitled to an
          injunction, restraining order or such other equitable
          relief (without the requirement to post a bond)
          restraining Executive from committing any violation of
          the covenants and obligations contained in Section 10(a),
          (b) and (c).  The remedies in the preceding sentence are
          cumulative and are in addition to any other rights and
          remedies the Company may have at law or in equity as an
          arbitrator (or court) shall reasonably determine.

                    (e)  Waiver.  Without limiting the generality
          of the foregoing, upon request of the Executive prior to
          engaging in any conduct otherwise prohibited by this
          Section 10, the Company may, in its sole discretion,
          waive in writing, on such terms and conditions as it may
          deem appropriate, any violation of this Section 10 which
          would otherwise occur due to such conduct.

                    11.  Indemnification; Attorneys' Fees.  The
          Company shall indemnify the Executive to the full extent
          authorized by law and the Charter and By-Laws of the
          Company, as applicable, for all expenses, costs,
          liabilities and legal fees which the Executive may incur
          in the discharge or course of his duties hereunder.  The
          Executive shall be insured under the Company's Directors'
          and Officers' Liability Insurance Policy as in effect
          from time to time.  The Executive shall be deemed a third
          party beneficiary with respect to Section 7.6 of the
          Merger Agreement and, as such, shall have the right to
          enforce such provisions as if he were party to the Merger
          Agreement.  In connection with any dispute or proceeding
          arising under this Agreement where the Executive is
          ultimately the substantially prevailing party, the
          Company shall promptly reimburse Executive for all costs,
          including without limitation the reasonable attorneys'
          fees of any attorney of the Executive's choosing,
          incurred by the Executive in any such dispute or
          proceeding arising under this Agreement.  Any termination
          of the Executive's employment or of this Agreement shall
          have no effect on the continuing operation of this
          Section 11.

                    12.  Successors; Binding Agreement.

                    (a)  Company's Successors.  The Company shall
          require any successor (whether direct or indirect, by
          purchase, merger, consolidation or otherwise) to all or
          substantially all of the business and/or assets of the
          Company to expressly assume and agree to perform this
          Agreement in the same manner and to the same extent that
          the Company would be required to perform it if no such
          succession had taken place.  As used in this Agreement,
          "Company" shall mean the Company as hereinbefore defined
          and any successor to its business and/or assets as
          aforesaid which executes and delivers the agreement
          provided for in this Section 12 or which otherwise
          becomes bound by all the terms and provisions of this
          Agreement by operation of law.  This Agreement shall not
          otherwise be assignable by the Company.

                    (b)  Executive's Successors.  This Agreement
          shall not be assignable by the Executive.  This Agreement
          and all rights of the Executive hereunder shall inure to
          the benefit of and be enforceable by the Executive's
          personal or legal representatives, executors,
          administrators, successors, heirs, distributees, devisees
          and legatees.  Upon the Executive's death, all amounts to
          which he is entitled hereunder, unless otherwise provided
          herein, shall be paid in accordance with the terms of
          this Agreement to the Executive's devisee, legatee, or
          other designee or, if there be no such designee, to the
          Executive's estate.

                    13.  Notices.  For the purpose of this
          Agreement, notices and all other communications provided
          for in the Agreement shall be in writing and shall be
          deemed to have been duly given when delivered or received
          by facsimile or three (3) days after mailing by United
          States certified mail, return receipt requested, postage
          prepaid, addressed, if to the Executive, to the address
          inserted below the Executive's signature on the final
          page hereof and, if to the Company, to the attention of
          the General Counsel except where this Agreement provides
          otherwise.  Notice of change of address or addressee
          shall be effective only upon actual receipt.

                    14.  Disputes.  This Agreement shall be
          construed in accordance with and governed by the law of
          the Commonwealth of Pennsylvania (without regard to
          principles of conflict of laws).  All claims and
          controversies related to or stemming from this Agreement
          or the Executive's employment with the Company, except
          actions for equitable relief pending an arbitration
          award, shall be submitted to binding arbitration in Blue
          Bell, Pennsylvania by a panel of three neutral
          arbitrators under the Commercial Arbitration Rules of the
          American Arbitration Association.  Judgment upon an award
          of the arbitrators may be entered and enforced in any
          court having jurisdiction.

                    15.  Miscellaneous.  No provision of this
          Agreement may be modified, waived or discharged unless
          such waiver, modification or discharge is agreed to in
          writing and signed by the Executive and such officer as
          may be specifically designated by the Board.  No waiver
          by either party hereto at any time of any breach by the
          other party hereto of, or of any lack of compliance with,
          any condition or provision of this Agreement to be
          performed by such other party shall be deemed a waiver of
          similar or dissimilar provisions or conditions at the
          same or at any prior or subsequent time.  All references
          to sections of the Exchange Act or the Code shall be
          deemed also to refer to any successor provisions to such
          sections.  Subject to the provisions of Section 5(j) and
          8 hereof, payments provided for hereunder shall be paid
          net of any applicable withholding required under federal,
          state or local law and any additional withholding to
          which the Executive has agreed.  The obligations of the
          Company and the Executive under this Agreement which by
          their nature may require either partial or total
          performance after the expiration of the Term shall
          survive such expiration.  The invalidity or
          unenforceability of any provision of this Agreement shall
          not affect the validity or enforceability of any other
          provision of this Agreement, which shall remain in full
          force and effect.

                    16.  Counterparts.  This Agreement may be
          executed in one or more counterparts, each of which shall
          be deemed to be an original but all of which together
          will constitute one and the same instrument.

                    17.  Entire Agreement.  This Agreement between
          the Company and the Executive sets forth the entire
          agreement of the parties hereto in respect of the subject
          matter contained herein and supersedes, as of the
          Effective Date, all prior agreements, promises,
          covenants, arrangements, communications, representations
          or warranties, whether oral or written, by the parties
          hereto in respect of the subject matter contained herein;
          and any prior agreement of the parties hereto in respect
          of the subject matter contained herein shall be
          terminated and canceled as of the Effective Date.


                    IN WITNESS WHEREOF, the parties hereto have
          executed this Agreement on March 30, 1996 to be effective
          as of the Effective Date.

                                   U.S. Healthcare

                                   By:_______________________
                                      Name:
                                      Title:

                                   __________________________
                                   David Simon

                                   __________________________
                                   __________________________
                                   __________________________
                                   Address of Executive

           







                             EMPLOYMENT AGREEMENT

                    AGREEMENT, dated as of March 30, 1996, by and
          between James Dickerson, Jr. (the "Executive") and U.S.
          Healthcare, Inc., a Pennsylvania corporation ("U.S.
          Healthcare" or the "Company").

                    WHEREAS, the Board of Directors of the Company
          (the "Board") and the Executive each desires that the
          Executive continue to furnish services to the Company on
          the terms and conditions hereinafter set forth; and

                    WHEREAS, the parties desire to enter into this
          agreement setting forth the terms and conditions of the
          continued employment of the Executive with the Company;

                    NOW, THEREFORE, in consideration of the
          premises and the mutual agreements set forth below, and
          intending to be legally bound hereby, the parties hereto
          hereby agree as follows:

                    1.  Employment.  The Company hereby agrees to
          employ the Executive, and the Executive hereby accepts
          such employment, on the terms and conditions hereinafter
          set forth.

                    2.  Term; Parties.  (a) Term.  The term of this
          Agreement (as extended from time to time, the "Term")
          shall commence on the date (the "Effective Date") of
          execution of the Agreement and Plan of Merger (the
          "Merger Agreement"), dated March 30, 1996, by and among
          the Company, Aetna Life and Casualty Company ("Aetna")
          and Butterfly, Inc. ("Parent"), and shall end on the
          fifth anniversary of the consummation of the merger
          contemplated by the Merger Agreement (the "Merger Date")
          or, if such merger is not consummated, the Effective
          Date, unless further extended as provided in this Section
          2 or sooner terminated in the event that Executive's
          employment is terminated pursuant to Section 6. 
          Commencing on the fifth anniversary of the Merger Date
          (or, if there is no Merger Date, on the fifth anniversary
          of the Effective Date) and on each such subsequent
          anniversary, the Term shall automatically be extended for
          one additional year unless, not later than 180 days prior
          to such anniversary, the Company or the Executive shall
          have given notice not to extend the Term.  The giving by
          the Company of a notice not to extend the Term shall not
          constitute a termination without Cause or a termination
          for Good Reason (each as defined in Section 6).

                    (b)  Parties.  On and after the Merger Date,
          this Agreement shall be assigned to and assumed by Parent
          and all references herein to the Company shall mean
          Parent.  On and after the Merger Date, to the extent that
          the Executive's employment is with U.S. Healthcare or
          Aetna, the obligation of the Company hereunder shall
          include the obligation to cause U.S. Healthcare or Aetna
          to act in accordance with the terms hereof.

                    3.  Position and Duties.  Prior to the Merger
          Date, the Executive shall serve as an employee of U.S.
          Healthcare with the title of Chief Financial Officer of
          U.S. Healthcare, shall report directly to the Co-
          Presidents and shall be responsible for all financial
          matters relating to the lines of business and operations
          of U.S. Healthcare (including but not limited to all HMO,
          POS, indemnity health insurance and other lines of
          business and operations, the "Business").  

                    From and after the Merger Date, the Business
          shall also include all of the domestic (U.S.) lines of
          business and operations of Aetna Health Plans (including
          but not limited to all Health, Specialty Health and Group
          Insurance lines of business and operations), and the
          Executive shall assume a similar position and similar
          responsibilities in matters relating to the Business
          except as may otherwise be mutually agreed upon between
          the Executive and the Co-Presidents of the Business.  

                    During the Term, the Executive shall report
          directly and exclusively to the Co-Presidents of the
          Business.  The Executive agrees to devote substantially
          all his full working time, attention and energies during
          normal business hours to the performance of his duties
          for the Company, provided that the Executive may continue
          to participate and engage in activities not associated
          with the Company consistent with the Executive's past
          practices at U.S. Healthcare.

                    4.  Place of Performance.  The principal place
          of employment and office of the Executive shall be in
          Blue Bell, Pennsylvania, or such other location as may be
          agreed to in writing by the Executive.

                    5.  Compensation and Related Matters.

                    (a)  Base Salary.  As compensation for the
          performance by the Executive of his duties hereunder, the
          Company shall pay the Executive a base salary at an
          annual rate that is no less than the Executive's annual
          salary rate for 1996, including any deferred compensation
          and interest or earnings on such year's deferred
          compensation under the Company's current deferred
          compensation program (such amount, as from time to time
          in effect, hereinafter referred to as "Base Salary"). 
          Base Salary shall be payable in accordance with U.S.
          Healthcare's normal payroll practices, shall be reviewed
          annually and may be increased upon such review.  Base
          Salary, once increased, may not be decreased.

                    (b)  Annual Bonus.  The Executive shall be
          entitled to an annual bonus upon the attainment by the
          Company, U.S. Healthcare and/or the Business of
          reasonable performance goals, established in accordance
          with the past practice of U.S. Healthcare.  The
          Executive's target bonus shall be equal to 80% of Base
          Salary, with appropriate increases or decreases upon the
          attainment of specified levels of Company, U.S.
          Healthcare and/or Business performance (such bonus
          hereinafter referred to as the "Annual Bonus"); provided,
          however, that with respect to fiscal year 1997, in no
          event shall the Annual Bonus be less than 100% of target. 
          If the Merger Date occurs during the fiscal year
          commencing in 1996, the Company shall pay to the
          Executive for such 1996 fiscal year 100% of the bonus
          which he would have received for the entire 1996 fiscal
          year as determined by U.S. Healthcare.

                    (c)  Sign-On Bonus.  Upon the Merger Date, the
          Company shall pay the Executive, in cash, an amount equal
          to the sum of (i) the Executive's then-current base
          salary (including deferred compensation and interest or
          earnings on such year's deferred compensation) and (ii)
          the aggregate value of the annual bonus paid or awarded
          (in cash and in shares of U.S. Healthcare common stock)
          to the Executive in respect of 1995, or, if the Merger
          Date is subsequent to December 31, 1996 and if the
          aggregate value of the annual bonus so paid or awarded to
          the Executive in respect of 1996 is higher, such 1996
          annual bonus (the sum of such amounts hereinafter
          referred to as the "Sign-On Bonus").

                    (d)  Stay Bonus.  The Executive shall be
          granted, as of the Merger Date, that number of restricted
          shares of common stock of Parent ("Parent Stock") which,
          when multiplied by the average closing price per share of
          Parent Stock on the ten trading dates immediately
          following the Merger Date, shall be equal in amount to
          the Sign-On Bonus (the "Restricted Stock Award").  The
          Restricted Stock Award shall be granted pursuant to a
          plan (i) that meets the requirements of Rule 16b-3
          promulgated under Section 16 of the Securities Exchange
          Act of 1934, as amended (the "Exchange Act"), (ii) the
          terms of which are acceptable to U.S. Healthcare and
          (iii) the shares of Company Stock reserved for issuance
          under which shall be registered in a timely manner on a
          Form S-8 (the "Plan").  Notwithstanding any provision of
          this Agreement to the contrary, the Restricted Stock
          Award shall become vested (i.e., all restrictions with
          respect thereto shall lapse) on the earliest to occur of
          (x) the second anniversary of the Merger Date, (y) a
          "change in control of Parent" (as defined in the Plan)
          following the Merger Date, or (z) upon termination of the
          Executive's employment by reason of death or Disability
          (as defined in Section 6 hereof), by the Company other
          than for Cause (as defined in Section 6 hereof) or by the
          Executive for Good Reason (as defined in Section 6
          hereof).  If the Executive's employment is terminated by
          the Executive without Good Reason or by the Company for
          Cause prior to the second anniversary of the Merger Date,
          the Restricted Stock Award shall be forfeited in full. 
          The Restricted Stock Award shall be subject to all other
          terms and conditions of the Plan, the rules and
          regulations thereunder, the applicable provisions of this
          Agreement and the document evidencing its terms and
          conditions reasonably acceptable to Executive.  The
          Restricted Stock Award is in addition to any other equity
          award made to the Executive under paragraph (e) of this
          Section 5 and shall not be offset against or reduce such
          award or any other award, benefit or amount due under
          this Agreement.

                    (e)  Future Equity Grants.  In addition to the
          Restricted Stock Award made pursuant to subsection (d) of
          this Section 6, the Executive shall from time to time be
          granted stock options and shares of restricted stock or
          other equity-based awards (collectively, "Equity Grants")
          on a basis no less favorable than such grants are made to
          similarly situated senior officers of the Company. 
          Without limiting the generality of the foregoing, if the
          Merger Date occurs after Parent has granted awards in
          respect of calendar year 1997, the Executive shall be
          entitled to receive an Equity Grant in respect of 1997. 

                    (f)  Expenses.  The Company shall reimburse the
          Executive for all reasonable business expenses, subject
          to the applicable policies and procedures of the Company
          then in force.

                    (g)  Vacation.  The Executive shall be entitled
          to 20 vacation days and that number of personal days and
          holidays as is consistent with U.S. Healthcare's current
          practices (including, with respect to up to the greater
          of 25 days or the number of days the Executive has
          accrued at the Effective Date, cash compensation in lieu
          thereof upon termination or expiration of this Agreement)
          or, if more favorable to the Executive, in accordance
          with the policies applicable generally to senior
          executives of the Company or any of its subsidiaries.

                    (h)  Services Furnished.  The Company shall
          furnish the Executive with appropriate office space and
          such other facilities and services as shall be suitable
          to the Executive's position and adequate for the
          performance of his duties as set forth in Section 3
          hereof and on a basis at least as favorable as in effect
          immediately prior to the Merger Date, such office space
          and other facilities and services to be furnished at the
          location set forth in Section 4 hereof.

                    (i)  Other Benefits.  The Company shall provide
          to the Executive such employee benefit plans and
          arrangements as are generally available to senior
          officers of the Company and its subsidiaries, including
          but not limited to retirement benefits, group life
          insurance, medical and dental insurance, and accident and
          disability insurance, which shall be provided on a basis
          reasonably comparable in the aggregate to those provided
          to him immediately prior to the Merger Date or, if more
          favorable to the Executive in the aggregate, to those
          provided to other senior officers of the Company and its
          subsidiaries.

                    (j)  Restrictions on Sale of Securities;
          Payment of Taxes.  From the date hereof to the earlier of
          the Merger Date or the date on which the transaction
          contemplated by the Merger Agreement is abandoned, the
          Executive agrees that he will not sell or otherwise
          dispose of any shares of the common stock of U.S.
          Healthcare ("U.S. Healthcare Stock"), including shares
          subject to option, except for the partial cash-out of
          such shares and options in connection with the
          transaction contemplated by the Merger Agreement.  During
          the one-year period following the Merger Date, the
          Executive agrees that, so long as he remains employed by
          the Company or any of its subsidiaries, he will not sell
          or otherwise dispose of any shares or option shares of
          Parent Stock.  Nothing herein shall prohibit the
          Executive from transferring any shares of U.S. Healthcare
          Stock or Parent Stock to a "Permitted Transferee," as
          defined in Article 5A.III of the U.S. Healthcare Articles
          of Incorporation.  In consideration of the Executive's
          agreement under this Section 5, the Company shall
          promptly reimburse the Executive for any and all income,
          wage and employment taxes (and any and all income and
          employment taxes on the reimbursement amount), payable by
          the Executive as the result of the acceleration of the
          vesting of restricted shares of U.S. Healthcare Stock on
          the Effective Date or as the result of the partial cash-
          out of shares of U.S. Healthcare Stock still subject to
          option on the Merger Date.  In no event shall Executive
          be reimbursed for any income, wage or employment taxes
          that result from the exercise of any options.

                    6.  Termination.  The Executive's employment
          hereunder may be terminated as follows:

                    (a)  Death.  The Executive's employment shall
          terminate upon his death, and the date of his death shall
          be the Date of Termination.

                    (b)  Disability.  If, as a result of the
          Executive's incapacity due to physical or mental illness
          (as determined by a medical doctor mutually agreed to by
          the Executive or his legal representative and the
          Company), the Executive shall have been absent from his
          duties hereunder on a full-time basis for the entire
          period of six consecutive months and, within thirty (30)
          days after written Notice of Termination (as defined in
          subsection (f) of this Section 6) is given, shall not
          have returned to the performance of his duties hereunder
          on a full-time basis ("Disability"), the Company may
          terminate the Executive's employment hereunder.  In this
          event, the Date of Termination shall be thirty (30) days
          after Notice of Termination is given (provided that the
          Executive shall not have returned to the performance of
          his duties on a full-time basis during such thirty (30)
          day period).

                    (c)  Cause.  The Company may terminate the
          Executive's employment in the event there occurs one or
          more of the following events that has not been cured (if
          curable) within thirty (30) days after written notice
          thereof has been given by the Company to the Executive
          ("Cause"); provided that the Company shall have delivered
          a written notice to the Executive within 120 days of its
          having actual knowledge of the occurrence of any of such
          events stating that the Company intends to terminate the
          Executive's employment for Cause and specifying the
          factual basis for such termination:

                         (i) the willful failure by the Executive
               to perform substantially the Executive's duties as
               an employee of the Company (other than due to
               physical or mental illness or after the delivery of
               a Notice of Termination for Good Reason by the
               Executive pursuant to subsection (f) of this Section
               6); 

                         (ii) the Executive's engaging in
               misconduct that is materially injurious to the
               Company or any subsidiary or any affiliate of the
               Company;

                         (iii) the Executive's having been
               convicted of, or entered a plea of nolo contendere
               to, a crime that constitutes a felony;

                         (iv) the material breach by the Executive
               of any written covenant or agreement not to compete
               with the Company or any subsidiary or any affiliate;
               or 

                         (v) the breach by the Executive of his
               duty of loyalty to the Company which shall include,
               without limitation (A) the disclosure by the
               Executive of any confidential information pertaining
               to the Company or any subsidiary or any affiliate of
               the Company, other than (x) in the ordinary course
               of the performance of his duties on behalf of the
               Company or (y) pursuant to a judicial or
               administrative subpoena from a court or governmental
               authority with jurisdiction over the matter in
               question, (B) the harmful interference by the
               Executive in the business or operations of the
               Company or any subsidiary or any affiliate of the
               Company, (C) any attempt by the Executive to induce
               any employee, insurance agent, insurance broker or
               broker-dealer of the Company or any subsidiary or
               any affiliate to be employed or perform services
               elsewhere, other than actions taken by the Executive
               that are intended to benefit the Company or any
               subsidiary or affiliate and do not benefit the
               Executive financially other than as an employee or
               stockholder of the Company, (D) any attempt by the
               Executive to solicit the trade of any customer or
               supplier, or prospective customer or supplier, of
               the Company on behalf of any person other than the
               Company or a subsidiary thereof, other than actions
               taken by the Executive that are intended to benefit
               the Company or any subsidiary or affiliate and do
               not benefit the Executive financially other than as
               an employee or stockholder of the Company, provided,
               however, that this provision shall only apply to any
               product or service which is in competition with a
               product or service of the Company or any subsidiary
               or affiliate thereof or (E) following the Merger
               Date, any breach or violation of the Company's Code
               of Conduct, as amended from time to time sufficient
               to warrant a for Cause termination consistent with
               the Company's past practice, consistently applied.

          Notwithstanding the foregoing, (x) the failure of the
          Executive, the Company, U.S. Healthcare or the Business
          to achieve any particular level of performance shall not,
          in and of itself, constitute Cause hereunder, (y) neither
          a breach of the Executive's duty of loyalty to the
          Company as described in subclause (A) nor a breach of the
          Company's Code of Conduct as described in subclause (E)
          shall constitute Cause hereunder unless such breach has
          had or could reasonably be expected to have a significant
          adverse effect on the business or reputation of the
          Company and (z) the occurrence of any of the events
          described above, if done inadvertently or of de minimis
          effect, shall not constitute "Cause". 

                    (d)  Good Reason.  The Executive may terminate
          his employment in the event there occurs one or more of
          the following events, without the written consent of the
          Executive, that has not been cured (if curable) within
          thirty (30) days after written notice thereof has been
          given by the Executive to the Company ("Good Reason");
          provided that the Executive shall have delivered a
          written notice to the Chief Executive Officer of the
          Company within 120 days of his having actual knowledge of
          the occurrence of the event or events constituting Good
          Reason stating that he intends to terminate his
          employment for Good Reason and specifying the factual
          basis for such termination:

                         (i)  a reduction in the Executive's annual
               Base Salary or incentive compensation opportunity as
               provided under Sections 5(a) and (b);

                        (ii)  a reduction in the Executive's
               positions, an adverse change in the Executive's
               reporting relationship or a material reduction in
               the Executive's duties and responsibilities, in each
               case from those described in Section 3 hereof;

                       (iii)  the relocation of the Executive's
               principal place of employment to a location more
               than 20 miles from the location at which he
               performed his principal duties on the date
               immediately prior to such relocation, or requiring
               the Executive to perform the principal portion of
               his duties in the greater Hartford, Connecticut
               area;

                        (iv)  a breach of the obligation to provide
               the Executive with the benefits required to be
               provided in accordance with Section 5(i);

                         (v)  a failure by the Company to pay any
               amounts due and owing to the Executive within 10
               days following written notice from the Executive of
               such failure to pay; 

                        (vi)  any other material breach of the
               Company's obligations to the Executive hereunder
               that materially affects the compensation or benefits
               payable to Executive or materially impairs the
               Executive's ability to perform the duties and
               responsibilities of his position;

                         (vii)  the failure of the Company to
               obtain the assumption and agreement in writing of
               its obligation to perform this Agreement in
               accordance with Section 12(a) hereof (A) by Parent
               on the Merger Date and (B) following the Merger
               Date, by any successor to Parent on the effective
               date of such succession; or

                         (viii)  a breach of Section 7.11(c) of the
               Merger Agreement.

          The Executive's continued employment shall not constitute
          consent to, or a waiver of rights with respect to, any
          act or failure to act constituting Good Reason hereunder. 
          In the event of a termination for Good Reason, the Date
          of Termination shall be the date specified in the Notice
          of Termination, which shall be no more than thirty (30)
          days after the Notice of Termination.

                    (e)  Other Terminations.  If the Executive's
          employment is terminated hereunder for any reason other
          than as set forth in subsections (a) through (d) of this
          Section 6, the date on which a Notice of Termination is
          given or any later date (within 30 days) set forth in
          such Notice of Termination shall be the Date of
          Termination.

                    (f)  Notice of Termination.  Any purported
          termination of the Executive's employment (other than
          termination pursuant to subsection (a) of this Section 6)
          shall be communicated by written Notice of Termination to
          the other party hereto in accordance with Section 13
          hereof.  For purposes of this Agreement, a "Notice of
          Termination" shall mean a notice that shall indicate the
          specific termination provision in this Agreement relied
          upon and shall set forth in reasonable detail the facts
          and circumstances claimed to provide a basis for
          termination of the Executive's employment under the
          provision so indicated.
          In addition, prior to the second anniversary of the
          Merger Date, a Notice of Termination is required to be
          signed by the Co-Presidents.

                    (g)  Dispute Concerning Termination.  If within
          fifteen (15) days after any Notice of Termination (other
          than with respect to a termination of the Executive's
          employment by the Company without Cause) is given, or, if
          later, prior to the Date of Termination (as determined
          without regard to this Section 6(g)), the party receiving
          such Notice of Termination notifies the other party that
          a dispute exists concerning the termination, the Date of
          Termination shall be extended until the earlier of (i)
          the date on which the Term ends or (ii) the date on which
          the dispute is finally resolved, either by mutual written
          agreement of the parties or by binding arbitration;
          provided, however, that the Date of Termination shall be
          extended by a notice of dispute given by the Executive
          only if such notice is given in good faith and the
          Executive pursues the resolution of such dispute with
          reasonable diligence.

                    (h)  Compensation During Dispute.  If the Date
          of Termination is extended in accordance with subsection
          (g) of this Section 6, the Company shall continue to pay
          the Executive the full compensation in effect when the
          notice giving rise to the dispute was given (including,
          but not limited to, Base Salary and Annual Bonus) and
          continue the Executive as a participant in all
          compensation, benefit and insurance plans in which the
          Executive was participating when the notice giving rise
          to the dispute was given, until the Date of Termination,
          as determined in accordance with subsection (g) of this
          Section 6.  Amounts paid under this Section 6(h) shall
          not be offset against or reduce any other amounts due
          under Section 7 of this Agreement.

                    7.  Compensation During Disability or Upon
          Termination.

                    (a)  Disability Period.  During any period that
          the Executive fails to perform his duties hereunder as a
          result of incapacity due to physical or mental illness
          ("Disability Period"), the Executive shall continue to
          (i) receive his full Base Salary, (ii) remain eligible to
          receive an Annual Bonus under Section 5(b) hereof, and
          (iii) participate in the programs described in Section
          5(i) hereof (except to the extent such participation is
          not permitted under the terms of such programs).  Such
          payments made to the Executive during the Disability
          Period shall be reduced by the sum of the amounts, if
          any, payable to the Executive at or prior to the time of
          any such payment under disability benefit plans of the
          Company or under the Social Security disability insurance
          program, and which amounts were not previously applied to
          reduce any such payment.

                    (b)  Death.  If the Executive's employment
          hereunder is terminated as a result of death, then:

                         (i)  the Company shall pay the Executive's
               estate or designated beneficiary, as soon as
               practicable after the Date of Termination, (A) any
               amounts earned, accrued or owing the Executive
               hereunder for services prior to the Date of
               Termination (including accrued deferred compensation
               and unused vacation and personal time) and (B) for a
               period of one year following the Date of
               Termination, such Base Salary and Annual Bonus as
               the Executive would have received during such period
               had he remained in the employ of the Company;

                        (ii)  the vesting and exercisability of all
               then outstanding equity-based awards shall be
               governed, as applicable, in accordance with Section
               5(d) of this Agreement or the terms of the U.S.
               Healthcare or Aetna, as the case may be, document
               under which they were initially granted (except that
               the vesting of awards granted under the U.S.
               Healthcare incentive plans prior to the Effective
               Date shall be governed by Section 1.7 of the Merger
               Agreement); and

                       (iii)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    (c)  Disability.  If the Executive's employment
          hereunder is terminated as a result of Disability, then:

                         (i)  the Company shall pay the Executive,
               as soon as practicable after the Date of
               Termination, (A) any amounts earned, accrued or
               owing the Executive hereunder for services prior to
               the Date of Termination (including accrued deferred
               compensation and unused vacation and personal time)
               and (B) for a period of one year following the Date
               of Termination, such Base Salary and Annual Bonus as
               the Executive would have received during such period
               had he remained in the employ of the Company, offset
               by any amounts received by the Executive pursuant to
               subsection (ii) of this Section 7(c);

                        (ii)  the Executive shall receive, until
               the date the Executive reaches age 65 or, if
               earlier, until his death, the salary-related
               disability benefits provided in accordance with, and
               subject to the conditions of, the long-term
               disability program then in effect for senior
               executives of the Company;

                        (iii)  the vesting and exercisability of
               all then outstanding equity-based awards shall be
               governed, as applicable, in accordance with Section
               5(d) of this Agreement or the terms of the U.S.
               Healthcare or Aetna, as the case may be, document
               under which they were initially granted (except that
               the vesting of awards granted under the U.S.
               Healthcare incentive plans prior to the Effective
               Date shall be governed by Section 1.7 of the Merger
               Agreement); and

                        (iv)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    (d)  Termination by Company for Cause or By
          Executive other than for Good Reason.  If the Executive's
          employment hereunder is terminated by the Company for
          Cause or by the Executive (other than for Good Reason),
          then:

                         (i)  the Company shall pay the Executive,
               as soon as practicable after the Date of
               Termination, any amounts earned, accrued or owing
               the Executive hereunder for services prior to the
               Date of Termination (including accrued deferred
               compensation and unused vacation and personal time);

                        (ii)  the vesting and exercisability of all
               then outstanding equity-based awards shall be
               governed, as applicable, in accordance with Section
               5(d) of this Agreement or the terms of the U.S.
               Healthcare or Aetna, as the case may be, document
               under which they were initially granted (except that
               the vesting of awards granted under the U.S.
               Healthcare incentive plans prior to the Effective
               Date shall be governed by Section 1.7 of the Merger
               Agreement); and

                       (iii)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    (e)  Termination by Company without Cause or by
          the Executive with Good Reason.  If the Executive's
          employment hereunder is terminated by the Company (other
          than for Cause or Disability) or by the Executive for
          Good Reason, then:

                         (i)  the Company shall pay the Executive,
               as soon as practicable after the Date of
               Termination, any amounts earned, accrued or owing
               the Executive hereunder for services prior to the
               Date of Termination (including accrued deferred
               compensation and unused vacation and personal time);

                        (ii)  notwithstanding any provision of any
               annual bonus plan to the contrary, the Company shall
               pay to the Executive, as soon as practicable after
               the Date of Termination, a lump sum amount, in cash,
               equal to the sum of (A) any annual bonus which has
               been allocated or awarded to the Executive for a
               completed fiscal year preceding the Date of
               Termination under any such plan and which, as of the
               Date of Termination, is contingent only upon the
               continued employment of the Executive to a
               subsequent date, and (B) a pro rata portion to the
               Date of Termination of the aggregate value of all
               contingent annual bonus awards to the Executive for
               all then uncompleted fiscal years (other than the
               fiscal year commencing in 1996) under any such plan,
               calculated as to each such award by multiplying the
               award that the Executive would have earned for the
               entire performance award period, assuming the
               achievement, at the target level, of the individual
               and corporate performance goals established with
               respect to such award, by the fraction (the
               "Fraction") obtained by dividing the number of full
               months and any fractional portion of a month during
               such performance award period through the Date of
               Termination by the total number of months contained
               in such performance award period; provided, however,
               that, in the event that the Executive's actual award
               (the "Actual Award") would have exceeded the target
               award had he remained in the employ of the Company
               until the end of any such performance award period,
               then the Company shall pay the Executive, as soon as
               practicable following the end of such period, an
               amount equal to the product of the Fraction and the
               excess of the Actual Award over the target award;
               and

                       (iii)  the Company shall pay to the
               Executive a severance payment in cash, 50% of which
               is payable in a lump sum on the Date of Termination
               and, subject to the Executive's continued compliance
               with the applicable provisions of Section 10 hereof
               (provided that the Executive be given an opportunity
               to cure (if curable) any breach of such Section 10
               in accordance with Section 10(d) hereof), the
               remaining 50% of which is payable in a lump sum on
               the first anniversary of the Date of Termination,
               equal to three times the sum of (A) the higher of
               the Executive's Base Salary as in effect immediately
               prior to the occurrence of the event or circumstance
               upon which the Notice of Termination is based and
               the Executive's annual base salary (including
               amounts deferred and any interest accrued thereon)
               in effect immediately prior to the Merger Date, and
               (B) the then current target annual bonus;

                        (iv)  (A) the exercisability of all then
               outstanding equity-based awards granted under the
               U.S. Healthcare incentive plans prior to the Merger
               Date shall be governed in accordance with the terms
               of such U.S. Healthcare incentive plans, (B) the
               vesting of restricted stock awards granted pursuant
               to Section 5(d) shall be governed in accordance with
               the terms of such Section and (C) all then
               outstanding equity-based awards granted under the
               Parent incentive plans shall continue to vest over
               the one year period following the Date of
               Termination and be exercisable through the 90 day
               period following such one year period;

                         (v)  for the thirty-six (36) month period
               immediately following the Date of Termination, the
               Company shall arrange to provide the Executive with
               life, disability, accident and health insurance
               benefits ("Insurance Benefits") and with pension
               plan benefits substantially similar, and on
               substantially similar terms, to those which the
               Executive is receiving immediately prior to the
               Notice of Termination or the economic equivalent
               thereof, which provision of Insurance Benefits shall
               satisfy all of the conditions necessary to avoid the
               imposition of any tax under section 4980B of the
               Code.  Insurance Benefits otherwise receivable by
               the Executive pursuant to this Section 7(e)(v) shall
               be reduced to the extent comparable benefits are
               actually received by, or made available to, the
               Executive without cost during the thirty-six (36)
               month period following the Executive's termination
               of employment (and any such benefits actually
               received by or made available to the Executive shall
               be reported to the Company by the Executive);

                        (vi)  if the Executive would have become
               entitled to benefits under the Company's
               postretirement health care or life insurance plans,
               as in effect immediately prior to the Effective Date
               (or, if there is a Merger Date, immediately prior to
               the Merger Date) or the Date of Termination
               (whichever is more favorable to the Executive), had
               the Executive's employment terminated on the date
               which is thirty-six (36) months after the Date of
               Termination, the Company shall provide such
               postretirement health care or life insurance
               benefits to the Executive and the Executive's
               dependents commencing on the later of (A) the date
               on which such coverage would have first become
               available (disregarding for these purposes the
               thirty-six (36) month period referred to above) and
               (B) the date on which benefits described in
               subsection (v) of this Section 7(e) shall terminate;
               and

                       (vii)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    8.  Gross-Up for Excise Tax.  (a)  Whether or
          not the Executive becomes entitled to any payments under
          Section 7 hereof, if any payments or benefits received or
          to be received by the Executive (whether pursuant to
          Section 5 hereof or any other provision of this Agreement
          or any other plan, arrangement or agreement with the
          Company or, with respect to his employment by the
          Company, with any other person (such payments or
          benefits, excluding the Gross-Up Payment described
          herein, being hereinafter referred to as the "Total
          Payments") will be subject to any excise tax imposed
          under section 4999 of the Internal Revenue Code of 1986,
          as amended (the "Excise Tax"), the Company shall pay to
          the Executive an additional amount (the "Gross-Up
          Payment") such that the net amount retained by the
          Executive, after deduction of any Excise Tax on the Total
          Payments and any federal, state and local income and
          employment taxes and Excise Tax upon the Gross-Up
          Payment, shall be equal to the Total Payments.

                    (b)  For purposes of determining whether any of
          the Total Payments will be subject to the Excise Tax and
          the amount of such Excise Tax, (i) all of the Total
          Payments shall be treated as "parachute payments" (within
          the meaning of section 280G(b)(2) of the Code) unless, in
          the opinion of Tax Counsel, a reasonable basis exists for
          determining that such payments or benefits (in whole or
          in part) do not constitute parachute payments, including
          by reason of section 280G(b)(4)(A) of the Code, (ii) all
          "excess parachute payments" within the meaning of section
          280G(b)(1) of the Code shall be treated as subject to the
          Excise Tax unless, in the opinion of Tax Counsel, a
          reasonable basis exists for determining that such excess
          parachute payments (in whole or in part) represent
          reasonable compensation for services actually rendered
          (within the meaning of section 280G(b)(4)(B) of the Code)
          in excess of the "base amount" (within the meaning of
          section 280G(b)(3) of the Code) allocable to such
          reasonable compensation, or are otherwise not subject to
          the Excise Tax, and (iii) the value of any noncash
          benefits or any deferred payment or benefit shall be
          determined by the Auditor in accordance with the
          principles of sections 280G(d)(3) and (4) of the Code. 
          For purposes of determining the amount of the Gross-Up
          Payment, the Executive shall be deemed to pay federal
          income tax at the highest marginal rate of federal income
          taxation in the calendar year in which the Gross-Up
          Payment is to be made and state and local income taxes at
          the highest marginal rate of taxation in the state and
          locality of the Executive's residence on the Date of
          Termination (or if there is no Date of Termination, then
          the date on which the Gross-Up Payment is calculated for
          purposes of this Section 8), net of the maximum reduction
          in federal income taxes which could be obtained from
          deduction of such state and local taxes.

                    (c)  In the event that the Excise Tax is
          finally determined to be less than the amount taken into
          account hereunder in calculating the Gross-Up Payment,
          the Executive shall repay to the Company, at the time
          that the amount of such reduction in Excise Tax is
          finally determined, the portion of the Gross-Up Payment
          attributable to such reduction (plus that portion of the
          Gross-Up Payment attributable to the Excise Tax and
          federal, state and local income and employment taxes
          imposed on the Gross-Up Payment being repaid by the
          Executive to the extent that such repayment results in a
          reduction in Excise Tax and/or a federal, state or local
          income or employment tax deduction) plus interest on the
          amount of such repayment at 120% of the rate provided in
          section 1274(b)(2)(B) of the Code.  In the event that the
          Excise Tax is determined to exceed the amount taken into
          account hereunder in calculating the Gross-Up Payment
          (including by reason of any payment the existence or
          amount of which cannot be determined at the time of the
          Gross-Up Payment), the Company shall make an additional
          Gross-Up Payment in respect of such excess (plus any
          interest, penalties or additions payable by the Executive
          with respect to such excess) at the time that the amount
          of such excess is finally determined.  The Executive and
          the Company shall each reasonably cooperate with the
          other in connection with any administrative or judicial
          proceedings concerning the existence or amount of
          liability for Excise Tax with respect to the Total
          Payments.

                    9.  Mitigation.  The Executive shall not be
          required to mitigate amounts payable pursuant to Section
          7 hereof by seeking other employment or otherwise, nor,
          except as provided in Section 7(e)(v), shall there be any
          offset against such payments on account of (a) any
          remuneration attributable to any subsequent employment
          that he may obtain or (b) any claims the Company may have
          against the Executive.

                    10.  Noncompetition and Confidentiality.

                    (a)  Noncompetition.  Prior to, and for a
          period of one year following, termination of the
          Executive's employment during the Term other than by the
          Company without Cause or by the Executive for Good
          Reason, the Executive shall not become associated,
          whether as a principal, partner, employee, consultant or
          shareholder (other than as a holder of not in excess of
          1% of the outstanding voting shares of any publicly
          traded company), with any entity that is actively engaged
          in any geographic area in any business which is in
          substantial and direct competition with the Business;
          provided, however, nothing in this Section 10(a) shall
          preclude the Executive from performing services solely
          and exclusively for a division or subsidiary of such an
          entity that is engaged in a noncompetitive business.

                    (b)  Nondisclosure, Nonsolicitation and
          Cooperation.

                         (i)  the Executive shall not (except to
               the extent required by an order of a court having
               competent jurisdiction or under subpoena from an
               appropriate government agency) disclose to any third
               person, whether during or subsequent to the
               Executive's employment with the Company, any trade
               secrets; customer lists; product development and
               related information; marketing plans and related
               information; sales plans and related information;
               operating policies and manuals; business plans;
               financial records; or other financial, commercial,
               business or technical information related to the
               Company or any subsidiary or affiliate thereof
               unless such information has been previously
               disclosed to the public by the Company or has become
               public knowledge other than by a breach of this
               Agreement; provided, however, that this limitation
               shall not apply to any such disclosure made while
               the Executive is employed by the Company, or any
               subsidiary or affiliate thereof in the ordinary
               course of the performance of the Executive's duties;

                        (ii)  prior to, and for two years
               following, termination of the Executive's employment
               during the Term, the Executive shall not attempt to
               induce any employee or Insurance Agent (as defined
               below) employed by or performing services for the
               Business to be employed or perform services
               elsewhere, provided that this covenant shall not
               preclude the Executive from taking any actions
               during the Term that (x) are intended to benefit the
               Company or any subsidiary or affiliate and (y) do
               not benefit the Executive financially other than as
               an employee or stockholder of the Company;

                       (iii)  prior to, and for two years
               following, termination of the Executive's employment
               during the Term, the Executive shall not attempt to
               induce any insurance agent or agency, insurance
               broker, broker-dealer or supplier of the Business to
               cease providing services to the Business, provided
               that this covenant shall not preclude the Executive
               from taking any actions during the Term that (x) are
               intended to benefit the Company or any subsidiary or
               affiliate and (y) do not benefit the Executive
               financially other than as an employee or stockholder
               of the Company; and

                        (iv)  prior to, and for two years
               following, termination of the Executive's employment
               during the Term, the Executive shall not attempt to
               solicit, on behalf of any person or entity other
               than the Business, the trade of any individual or
               entity which, at the time of the solicitation, is a
               customer of the Business, or which the Business is
               undertaking reasonable steps to procure as a
               customer at the time of or immediately preceding
               termination of the Term; provided, however, that
               this limitation shall only apply to (x) any product
               or service which is in competition with a product or
               service of the Business and (y) with respect to any
               customer with whom the Executive has or had (by
               virtue of the Executive's position or otherwise) a
               personal relationship.

          Solely for purposes of subsection (b)(ii) of this Section
          10, the term "Insurance Agent" shall mean those insurance
          agents or agencies representing the Company or any
          subsidiary or affiliate thereof, that are exclusive or
          career agents or agencies of the Company or any
          subsidiary or affiliate thereof, or any insurance agents
          or agencies which derive 50% or more of their business
          revenue from the Company or any subsidiary or affiliate
          thereof (calculated on an aggregate basis for the 12-
          month period prior to the date of determination or such
          other similar period for which such information is more
          readily available).

                    (c)  Company Property.  Promptly following the
          Executive's termination of the Executive's employment,
          the Executive shall return to the Company all property of
          the Company, and all copies thereof in the Executive's
          possession or under his control.

                    (d)  Intention of the Parties.  If any
          provision of Section 10 is determined by an arbitrator
          (or a court of competent jurisdiction asked to enforce
          the decision of the arbitrator) not to be enforceable in
          the manner set forth in this Agreement, the Company and
          Executive agree that it is the intention of the parties
          that such provision should be enforceable to the maximum
          extent possible under applicable law and that such
          arbitrator (or court) shall reform such provision to make
          it enforceable in accordance with the intent of the
          parties.  Executive acknowledges that a material part of
          the inducement for the Company to provide the salary and
          benefits evidenced hereby is Executive's covenants set
          forth in Section 10(a), (b) and (c) and that the
          covenants and obligations of Executive with respect to
          nondisclosure and nonsolicitation relate to special,
          unique and extraordinary matters and that a violation of
          any of the terms of such covenants and obligations will
          cause the Company irreparable injury for which adequate
          remedies are not available at law.  Therefore, Executive
          agrees that, if Executive shall materially breach any of
          those covenants following termination of employment and
          such breach is not cured (if curable) within ten (10)
          days following receipt of written notification thereof
          that specifies the manner in which the Company believes
          the Executive has breached such covenants, the Company
          shall have no further obligation to pay Executive any
          benefits otherwise payable under Sections 7(e)(iii), (v)
          and (vi) and the Company shall be entitled to an
          injunction, restraining order or such other equitable
          relief (without the requirement to post a bond)
          restraining Executive from committing any violation of
          the covenants and obligations contained in Section 10(a),
          (b) and (c).  The remedies in the preceding sentence are
          cumulative and are in addition to any other rights and
          remedies the Company may have at law or in equity as an
          arbitrator (or court) shall reasonably determine.

                    (e)  Waiver.  Without limiting the generality
          of the foregoing, upon request of the Executive prior to
          engaging in any conduct otherwise prohibited by this
          Section 10, the Company may, in its sole discretion,
          waive in writing, on such terms and conditions as it may
          deem appropriate, any violation of this Section 10 which
          would otherwise occur due to such conduct.

                    11.  Indemnification; Attorneys' Fees.  The
          Company shall indemnify the Executive to the full extent
          authorized by law and the Charter and By-Laws of the
          Company, as applicable, for all expenses, costs,
          liabilities and legal fees which the Executive may incur
          in the discharge or course of his duties hereunder.  The
          Executive shall be insured under the Company's Directors'
          and Officers' Liability Insurance Policy as in effect
          from time to time.  The Executive shall be deemed a third
          party beneficiary with respect to Section 7.6 of the
          Merger Agreement and, as such, shall have the right to
          enforce such provisions as if he were party to the Merger
          Agreement.  In connection with any dispute or proceeding
          arising under this Agreement where the Executive is
          ultimately the substantially prevailing party, the
          Company shall promptly reimburse Executive for all costs,
          including without limitation the reasonable attorneys'
          fees of any attorney of the Executive's choosing,
          incurred by the Executive in any such dispute or
          proceeding arising under this Agreement.  Any termination
          of the Executive's employment or of this Agreement shall
          have no effect on the continuing operation of this
          Section 11.

                    12.  Successors; Binding Agreement.

                    (a)  Company's Successors.  The Company shall
          require any successor (whether direct or indirect, by
          purchase, merger, consolidation or otherwise) to all or
          substantially all of the business and/or assets of the
          Company to expressly assume and agree to perform this
          Agreement in the same manner and to the same extent that
          the Company would be required to perform it if no such
          succession had taken place.  As used in this Agreement,
          "Company" shall mean the Company as hereinbefore defined
          and any successor to its business and/or assets as
          aforesaid which executes and delivers the agreement
          provided for in this Section 12 or which otherwise
          becomes bound by all the terms and provisions of this
          Agreement by operation of law.  This Agreement shall not
          otherwise be assignable by the Company.

                    (b)  Executive's Successors.  This Agreement
          shall not be assignable by the Executive.  This Agreement
          and all rights of the Executive hereunder shall inure to
          the benefit of and be enforceable by the Executive's
          personal or legal representatives, executors,
          administrators, successors, heirs, distributees, devisees
          and legatees.  Upon the Executive's death, all amounts to
          which he is entitled hereunder, unless otherwise provided
          herein, shall be paid in accordance with the terms of
          this Agreement to the Executive's devisee, legatee, or
          other designee or, if there be no such designee, to the
          Executive's estate.

                    13.  Notices.  For the purpose of this
          Agreement, notices and all other communications provided
          for in the Agreement shall be in writing and shall be
          deemed to have been duly given when delivered or received
          by facsimile or three (3) days after mailing by United
          States certified mail, return receipt requested, postage
          prepaid, addressed, if to the Executive, to the address
          inserted below the Executive's signature on the final
          page hereof and, if to the Company, to the attention of
          the General Counsel except where this Agreement provides
          otherwise.  Notice of change of address or addressee
          shall be effective only upon actual receipt.

                    14.  Disputes.  This Agreement shall be
          construed in accordance with and governed by the law of
          the Commonwealth of Pennsylvania (without regard to
          principles of conflict of laws).  All claims and
          controversies related to or stemming from this Agreement
          or the Executive's employment with the Company, except
          actions for equitable relief pending an arbitration
          award, shall be submitted to binding arbitration in Blue
          Bell, Pennsylvania by a panel of three neutral
          arbitrators under the Commercial Arbitration Rules of the
          American Arbitration Association.  Judgment upon an award
          of the arbitrators may be entered and enforced in any
          court having jurisdiction.

                    15.  Miscellaneous.  No provision of this
          Agreement may be modified, waived or discharged unless
          such waiver, modification or discharge is agreed to in
          writing and signed by the Executive and such officer as
          may be specifically designated by the Board.  No waiver
          by either party hereto at any time of any breach by the
          other party hereto of, or of any lack of compliance with,
          any condition or provision of this Agreement to be
          performed by such other party shall be deemed a waiver of
          similar or dissimilar provisions or conditions at the
          same or at any prior or subsequent time.  All references
          to sections of the Exchange Act or the Code shall be
          deemed also to refer to any successor provisions to such
          sections.  Subject to the provisions of Section 5(j) and
          8 hereof, payments provided for hereunder shall be paid
          net of any applicable withholding required under federal,
          state or local law and any additional withholding to
          which the Executive has agreed.  The obligations of the
          Company and the Executive under this Agreement which by
          their nature may require either partial or total
          performance after the expiration of the Term shall
          survive such expiration.  The invalidity or
          unenforceability of any provision of this Agreement shall
          not affect the validity or enforceability of any other
          provision of this Agreement, which shall remain in full
          force and effect.

                    16.  Counterparts.  This Agreement may be
          executed in one or more counterparts, each of which shall
          be deemed to be an original but all of which together
          will constitute one and the same instrument.

                    17.  Entire Agreement.  This Agreement between
          the Company and the Executive sets forth the entire
          agreement of the parties hereto in respect of the subject
          matter contained herein and supersedes, as of the
          Effective Date, all prior agreements, promises,
          covenants, arrangements, communications, representations
          or warranties, whether oral or written, by the parties
          hereto in respect of the subject matter contained herein;
          and any prior agreement of the parties hereto in respect
          of the subject matter contained herein shall be
          terminated and canceled as of the Effective Date.


                    IN WITNESS WHEREOF, the parties hereto have
          executed this Agreement on March 30, 1996 to be effective
          as of the Effective Date.

                                   U.S. Healthcare

                                   By:_______________________
                                      Name:
                                      Title:

                                   __________________________
                                   James Dickerson, Jr.

                                   __________________________
                                   __________________________
                                   __________________________
                                   Address of Executive

           







                             EMPLOYMENT AGREEMENT

                    AGREEMENT, dated as of March 30, 1996, by and
          between Arthur Leibowitz, M.D. (the "Executive") and U.S.
          Healthcare, Inc., a Pennsylvania corporation ("U.S.
          Healthcare" or the "Company").

                    WHEREAS, the Board of Directors of the Company
          (the "Board") and the Executive each desires that the
          Executive continue to furnish services to the Company on
          the terms and conditions hereinafter set forth; and

                    WHEREAS, the parties desire to enter into this
          agreement setting forth the terms and conditions of the
          continued employment of the Executive with the Company;

                    NOW, THEREFORE, in consideration of the
          premises and the mutual agreements set forth below, and
          intending to be legally bound hereby, the parties hereto
          hereby agree as follows:

                    1.  Employment.  The Company hereby agrees to
          employ the Executive, and the Executive hereby accepts
          such employment, on the terms and conditions hereinafter
          set forth.

                    2.  Term; Parties.  (a) Term.  The term of this
          Agreement (as extended from time to time, the "Term")
          shall commence on the date (the "Effective Date") of
          execution of the Agreement and Plan of Merger (the
          "Merger Agreement"), dated March 30, 1996, by and among
          the Company, Aetna Life and Casualty Company ("Aetna")
          and Butterfly, Inc. ("Parent"), and shall end on the
          fifth anniversary of the consummation of the merger
          contemplated by the Merger Agreement (the "Merger Date")
          or, if such merger is not consummated, the Effective
          Date, unless further extended as provided in this Section
          2 or sooner terminated in the event that Executive's
          employment is terminated pursuant to Section 6. 
          Commencing on the fifth anniversary of the Merger Date
          (or, if there is no Merger Date, on the fifth anniversary
          of the Effective Date) and on each such subsequent
          anniversary, the Term shall automatically be extended for
          one additional year unless, not later than 180 days prior
          to such anniversary, the Company or the Executive shall
          have given notice not to extend the Term.  The giving by
          the Company of a notice not to extend the Term shall not
          constitute a termination without Cause or a termination
          for Good Reason (each as defined in Section 6).

                    (b)  Parties.  On and after the Merger Date,
          this Agreement shall be assigned to and assumed by Parent
          and all references herein to the Company shall mean
          Parent.  On and after the Merger Date, to the extent that
          the Executive's employment is with U.S. Healthcare or
          Aetna, the obligation of the Company hereunder shall
          include the obligation to cause U.S. Healthcare or Aetna
          to act in accordance with the terms hereof.

                    3.  Position and Duties.  Prior to the Merger
          Date, the Executive shall serve as an employee of U.S.
          Healthcare with the title of Chief Medical Officer of
          U.S. Healthcare, shall report directly to the Co-
          Presidents and shall be responsible for all medical
          matters relating to the lines of business and operations
          of U.S. Healthcare (including but not limited to all HMO,
          POS, indemnity health insurance and other lines of
          business and operations, the "Business").  

                    From and after the Merger Date, the Business
          shall also include all of the domestic (U.S.) lines of
          business and operations of Aetna Health Plans (including
          but not limited to all Health, Specialty Health and Group
          Insurance lines of business and operations), and the
          Executive shall assume a similar position and similar
          responsibilities in matters relating to the Business
          except as may otherwise be mutually agreed upon between
          the Executive and the Co-Presidents of the Business.  

                    During the Term, the Executive shall report
          directly and exclusively to the Co-Presidents of the
          Business.  The Executive agrees to devote substantially
          all his full working time, attention and energies during
          normal business hours to the performance of his duties
          for the Company, provided that the Executive may continue
          to participate and engage in activities not associated
          with the Company consistent with the Executive's past
          practices at U.S. Healthcare.

                    4.  Place of Performance.  The principal place
          of employment and office of the Executive shall be in
          Blue Bell, Pennsylvania, or such other location as may be
          agreed to in writing by the Executive.

                    5.  Compensation and Related Matters.

                    (a)  Base Salary.  As compensation for the
          performance by the Executive of his duties hereunder, the
          Company shall pay the Executive a base salary at an
          annual rate that is no less than the Executive's annual
          salary rate for 1996, including any deferred compensation
          and interest or earnings on such year's deferred
          compensation under the Company's current deferred
          compensation program (such amount, as from time to time
          in effect, hereinafter referred to as "Base Salary"). 
          Base Salary shall be payable in accordance with U.S.
          Healthcare's normal payroll practices, shall be reviewed
          annually and may be increased upon such review.  Base
          Salary, once increased, may not be decreased.

                    (b)  Annual Bonus.  The Executive shall be
          entitled to an annual bonus upon the attainment by the
          Company, U.S. Healthcare and/or the Business of
          reasonable performance goals, established in accordance
          with the past practice of U.S. Healthcare.  The
          Executive's target bonus shall be equal to 80% of Base
          Salary, with appropriate increases or decreases upon the
          attainment of specified levels of Company, U.S.
          Healthcare and/or Business performance (such bonus
          hereinafter referred to as the "Annual Bonus"); provided,
          however, that with respect to fiscal year 1997, in no
          event shall the Annual Bonus be less than 100% of target. 
          If the Merger Date occurs during the fiscal year
          commencing in 1996, the Company shall pay to the
          Executive for such 1996 fiscal year 100% of the bonus
          which he would have received for the entire 1996 fiscal
          year as determined by U.S. Healthcare.

                    (c)  Sign-On Bonus.  Upon the Merger Date, the
          Company shall pay the Executive, in cash, an amount equal
          to the sum of (i) the Executive's then-current base
          salary (including deferred compensation and interest or
          earnings on such year's deferred compensation) and (ii)
          the aggregate value of the annual bonus paid or awarded
          (in cash and in shares of U.S. Healthcare common stock)
          to the Executive in respect of 1995, or, if the Merger
          Date is subsequent to December 31, 1996 and if the
          aggregate value of the annual bonus so paid or awarded to
          the Executive in respect of 1996 is higher, such 1996
          annual bonus (the sum of such amounts hereinafter
          referred to as the "Sign-On Bonus").

                    (d)  Stay Bonus.  The Executive shall be
          granted, as of the Merger Date, that number of restricted
          shares of common stock of Parent ("Parent Stock") which,
          when multiplied by the average closing price per share of
          Parent Stock on the ten trading dates immediately
          following the Merger Date, shall be equal in amount to
          the Sign-On Bonus (the "Restricted Stock Award").  The
          Restricted Stock Award shall be granted pursuant to a
          plan (i) that meets the requirements of Rule 16b-3
          promulgated under Section 16 of the Securities Exchange
          Act of 1934, as amended (the "Exchange Act"), (ii) the
          terms of which are acceptable to U.S. Healthcare and
          (iii) the shares of Company Stock reserved for issuance
          under which shall be registered in a timely manner on a
          Form S-8 (the "Plan").  Notwithstanding any provision of
          this Agreement to the contrary, the Restricted Stock
          Award shall become vested (i.e., all restrictions with
          respect thereto shall lapse) on the earliest to occur of
          (x) the second anniversary of the Merger Date, (y) a
          "change in control of Parent" (as defined in the Plan)
          following the Merger Date, or (z) upon termination of the
          Executive's employment by reason of death or Disability
          (as defined in Section 6 hereof), by the Company other
          than for Cause (as defined in Section 6 hereof) or by the
          Executive for Good Reason (as defined in Section 6
          hereof).  If the Executive's employment is terminated by
          the Executive without Good Reason or by the Company for
          Cause prior to the second anniversary of the Merger Date,
          the Restricted Stock Award shall be forfeited in full. 
          The Restricted Stock Award shall be subject to all other
          terms and conditions of the Plan, the rules and
          regulations thereunder, the applicable provisions of this
          Agreement and the document evidencing its terms and
          conditions reasonably acceptable to Executive.  The
          Restricted Stock Award is in addition to any other equity
          award made to the Executive under paragraph (e) of this
          Section 5 and shall not be offset against or reduce such
          award or any other award, benefit or amount due under
          this Agreement.

                    (e)  Future Equity Grants.  In addition to the
          Restricted Stock Award made pursuant to subsection (d) of
          this Section 6, the Executive shall from time to time be
          granted stock options and shares of restricted stock or
          other equity-based awards (collectively, "Equity Grants")
          on a basis no less favorable than such grants are made to
          similarly situated senior officers of the Company. 
          Without limiting the generality of the foregoing, if the
          Merger Date occurs after Parent has granted awards in
          respect of calendar year 1997, the Executive shall be
          entitled to receive an Equity Grant in respect of 1997. 

                    (f)  Expenses.  The Company shall reimburse the
          Executive for all reasonable business expenses, subject
          to the applicable policies and procedures of the Company
          then in force.

                    (g)  Vacation.  The Executive shall be entitled
          to 20 vacation days and that number of personal days and
          holidays as is consistent with U.S. Healthcare's current
          practices (including, with respect to up to the greater
          of 25 days or the number of days the Executive has
          accrued at the Effective Date, cash compensation in lieu
          thereof upon termination or expiration of this Agreement)
          or, if more favorable to the Executive, in accordance
          with the policies applicable generally to senior
          executives of the Company or any of its subsidiaries.

                    (h)  Services Furnished.  The Company shall
          furnish the Executive with appropriate office space and
          such other facilities and services as shall be suitable
          to the Executive's position and adequate for the
          performance of his duties as set forth in Section 3
          hereof and on a basis at least as favorable as in effect
          immediately prior to the Merger Date, such office space
          and other facilities and services to be furnished at the
          location set forth in Section 4 hereof.

                    (i)  Other Benefits.  The Company shall provide
          to the Executive such employee benefit plans and
          arrangements as are generally available to senior
          officers of the Company and its subsidiaries, including
          but not limited to retirement benefits, group life
          insurance, medical and dental insurance, and accident and
          disability insurance, which shall be provided on a basis
          reasonably comparable in the aggregate to those provided
          to him immediately prior to the Merger Date or, if more
          favorable to the Executive in the aggregate, to those
          provided to other senior officers of the Company and its
          subsidiaries.

                    (j)  Restrictions on Sale of Securities;
          Payment of Taxes.  From the date hereof to the earlier of
          the Merger Date or the date on which the transaction
          contemplated by the Merger Agreement is abandoned, the
          Executive agrees that he will not sell or otherwise
          dispose of any shares of the common stock of U.S.
          Healthcare ("U.S. Healthcare Stock"), including shares
          subject to option, except for the partial cash-out of
          such shares and options in connection with the
          transaction contemplated by the Merger Agreement.  During
          the one-year period following the Merger Date, the
          Executive agrees that, so long as he remains employed by
          the Company or any of its subsidiaries, he will not sell
          or otherwise dispose of any shares or option shares of
          Parent Stock.  Nothing herein shall prohibit the
          Executive from transferring any shares of U.S. Healthcare
          Stock or Parent Stock to a "Permitted Transferee," as
          defined in Article 5A.III of the U.S. Healthcare Articles
          of Incorporation.  In consideration of the Executive's
          agreement under this Section 5, the Company shall
          promptly reimburse the Executive for any and all income,
          wage and employment taxes (and any and all income and
          employment taxes on the reimbursement amount), payable by
          the Executive as the result of the acceleration of the
          vesting of restricted shares of U.S. Healthcare Stock on
          the Effective Date or as the result of the partial cash-
          out of shares of U.S. Healthcare Stock still subject to
          option on the Merger Date.  In no event shall Executive
          be reimbursed for any income, wage or employment taxes
          that result from the exercise of any options.

                    6.  Termination.  The Executive's employment
          hereunder may be terminated as follows:

                    (a)  Death.  The Executive's employment shall
          terminate upon his death, and the date of his death shall
          be the Date of Termination.

                    (b)  Disability.  If, as a result of the
          Executive's incapacity due to physical or mental illness
          (as determined by a medical doctor mutually agreed to by
          the Executive or his legal representative and the
          Company), the Executive shall have been absent from his
          duties hereunder on a full-time basis for the entire
          period of six consecutive months and, within thirty (30)
          days after written Notice of Termination (as defined in
          subsection (f) of this Section 6) is given, shall not
          have returned to the performance of his duties hereunder
          on a full-time basis ("Disability"), the Company may
          terminate the Executive's employment hereunder.  In this
          event, the Date of Termination shall be thirty (30) days
          after Notice of Termination is given (provided that the
          Executive shall not have returned to the performance of
          his duties on a full-time basis during such thirty (30)
          day period).

                    (c)  Cause.  The Company may terminate the
          Executive's employment in the event there occurs one or
          more of the following events that has not been cured (if
          curable) within thirty (30) days after written notice
          thereof has been given by the Company to the Executive
          ("Cause"); provided that the Company shall have delivered
          a written notice to the Executive within 120 days of its
          having actual knowledge of the occurrence of any of such
          events stating that the Company intends to terminate the
          Executive's employment for Cause and specifying the
          factual basis for such termination:

                         (i) the willful failure by the Executive
               to perform substantially the Executive's duties as
               an employee of the Company (other than due to
               physical or mental illness or after the delivery of
               a Notice of Termination for Good Reason by the
               Executive pursuant to subsection (f) of this Section
               6); 

                         (ii) the Executive's engaging in
               misconduct that is materially injurious to the
               Company or any subsidiary or any affiliate of the
               Company;

                         (iii) the Executive's having been
               convicted of, or entered a plea of nolo contendere
               to, a crime that constitutes a felony;

                         (iv) the material breach by the Executive
               of any written covenant or agreement not to compete
               with the Company or any subsidiary or any affiliate;
               or 

                         (v) the breach by the Executive of his
               duty of loyalty to the Company which shall include,
               without limitation (A) the disclosure by the
               Executive of any confidential information pertaining
               to the Company or any subsidiary or any affiliate of
               the Company, other than (x) in the ordinary course
               of the performance of his duties on behalf of the
               Company or (y) pursuant to a judicial or
               administrative subpoena from a court or governmental
               authority with jurisdiction over the matter in
               question, (B) the harmful interference by the
               Executive in the business or operations of the
               Company or any subsidiary or any affiliate of the
               Company, (C) any attempt by the Executive to induce
               any employee, insurance agent, insurance broker or
               broker-dealer of the Company or any subsidiary or
               any affiliate to be employed or perform services
               elsewhere, other than actions taken by the Executive
               that are intended to benefit the Company or any
               subsidiary or affiliate and do not benefit the
               Executive financially other than as an employee or
               stockholder of the Company, (D) any attempt by the
               Executive to solicit the trade of any customer or
               supplier, or prospective customer or supplier, of
               the Company on behalf of any person other than the
               Company or a subsidiary thereof, other than actions
               taken by the Executive that are intended to benefit
               the Company or any subsidiary or affiliate and do
               not benefit the Executive financially other than as
               an employee or stockholder of the Company, provided,
               however, that this provision shall only apply to any
               product or service which is in competition with a
               product or service of the Company or any subsidiary
               or affiliate thereof or (E) following the Merger
               Date, any breach or violation of the Company's Code
               of Conduct, as amended from time to time sufficient
               to warrant a for Cause termination consistent with
               the Company's past practice, consistently applied.

          Notwithstanding the foregoing, (x) the failure of the
          Executive, the Company, U.S. Healthcare or the Business
          to achieve any particular level of performance shall not,
          in and of itself, constitute Cause hereunder, (y) neither
          a breach of the Executive's duty of loyalty to the
          Company as described in subclause (A) nor a breach of the
          Company's Code of Conduct as described in subclause (E)
          shall constitute Cause hereunder unless such breach has
          had or could reasonably be expected to have a significant
          adverse effect on the business or reputation of the
          Company and (z) the occurrence of any of the events
          described above, if done inadvertently or of de minimis
          effect, shall not constitute "Cause". 

                    (d)  Good Reason.  The Executive may terminate
          his employment in the event there occurs one or more of
          the following events, without the written consent of the
          Executive, that has not been cured (if curable) within
          thirty (30) days after written notice thereof has been
          given by the Executive to the Company ("Good Reason");
          provided that the Executive shall have delivered a
          written notice to the Chief Executive Officer of the
          Company within 120 days of his having actual knowledge of
          the occurrence of the event or events constituting Good
          Reason stating that he intends to terminate his
          employment for Good Reason and specifying the factual
          basis for such termination:

                         (i)  a reduction in the Executive's annual
               Base Salary or incentive compensation opportunity as
               provided under Sections 5(a) and (b);

                        (ii)  a reduction in the Executive's
               positions, an adverse change in the Executive's
               reporting relationship or a material reduction in
               the Executive's duties and responsibilities, in each
               case from those described in Section 3 hereof;

                       (iii)  the relocation of the Executive's
               principal place of employment to a location more
               than 20 miles from the location at which he
               performed his principal duties on the date
               immediately prior to such relocation, or requiring
               the Executive to perform the principal portion of
               his duties in the greater Hartford, Connecticut
               area;

                        (iv)  a breach of the obligation to provide
               the Executive with the benefits required to be
               provided in accordance with Section 5(i);

                         (v)  a failure by the Company to pay any
               amounts due and owing to the Executive within 10
               days following written notice from the Executive of
               such failure to pay; 

                        (vi)  any other material breach of the
               Company's obligations to the Executive hereunder
               that materially affects the compensation or benefits
               payable to Executive or materially impairs the
               Executive's ability to perform the duties and
               responsibilities of his position;

                         (vii)  the failure of the Company to
               obtain the assumption and agreement in writing of
               its obligation to perform this Agreement in
               accordance with Section 12(a) hereof (A) by Parent
               on the Merger Date and (B) following the Merger
               Date, by any successor to Parent on the effective
               date of such succession; or

                         (viii)  a breach of Section 7.11(c) of the
               Merger Agreement.

          The Executive's continued employment shall not constitute
          consent to, or a waiver of rights with respect to, any
          act or failure to act constituting Good Reason hereunder. 
          In the event of a termination for Good Reason, the Date
          of Termination shall be the date specified in the Notice
          of Termination, which shall be no more than thirty (30)
          days after the Notice of Termination.

                    (e)  Other Terminations.  If the Executive's
          employment is terminated hereunder for any reason other
          than as set forth in subsections (a) through (d) of this
          Section 6, the date on which a Notice of Termination is
          given or any later date (within 30 days) set forth in
          such Notice of Termination shall be the Date of
          Termination.

                    (f)  Notice of Termination.  Any purported
          termination of the Executive's employment (other than
          termination pursuant to subsection (a) of this Section 6)
          shall be communicated by written Notice of Termination to
          the other party hereto in accordance with Section 13
          hereof.  For purposes of this Agreement, a "Notice of
          Termination" shall mean a notice that shall indicate the
          specific termination provision in this Agreement relied
          upon and shall set forth in reasonable detail the facts
          and circumstances claimed to provide a basis for
          termination of the Executive's employment under the
          provision so indicated.
          In addition, prior to the second anniversary of the
          Merger Date, a Notice of Termination is required to be
          signed by the Co-Presidents.

                    (g)  Dispute Concerning Termination.  If within
          fifteen (15) days after any Notice of Termination (other
          than with respect to a termination of the Executive's
          employment by the Company without Cause) is given, or, if
          later, prior to the Date of Termination (as determined
          without regard to this Section 6(g)), the party receiving
          such Notice of Termination notifies the other party that
          a dispute exists concerning the termination, the Date of
          Termination shall be extended until the earlier of (i)
          the date on which the Term ends or (ii) the date on which
          the dispute is finally resolved, either by mutual written
          agreement of the parties or by binding arbitration;
          provided, however, that the Date of Termination shall be
          extended by a notice of dispute given by the Executive
          only if such notice is given in good faith and the
          Executive pursues the resolution of such dispute with
          reasonable diligence.

                    (h)  Compensation During Dispute.  If the Date
          of Termination is extended in accordance with subsection
          (g) of this Section 6, the Company shall continue to pay
          the Executive the full compensation in effect when the
          notice giving rise to the dispute was given (including,
          but not limited to, Base Salary and Annual Bonus) and
          continue the Executive as a participant in all
          compensation, benefit and insurance plans in which the
          Executive was participating when the notice giving rise
          to the dispute was given, until the Date of Termination,
          as determined in accordance with subsection (g) of this
          Section 6.  Amounts paid under this Section 6(h) shall
          not be offset against or reduce any other amounts due
          under Section 7 of this Agreement.

                    7.  Compensation During Disability or Upon
          Termination.

                    (a)  Disability Period.  During any period that
          the Executive fails to perform his duties hereunder as a
          result of incapacity due to physical or mental illness
          ("Disability Period"), the Executive shall continue to
          (i) receive his full Base Salary, (ii) remain eligible to
          receive an Annual Bonus under Section 5(b) hereof, and
          (iii) participate in the programs described in Section
          5(i) hereof (except to the extent such participation is
          not permitted under the terms of such programs).  Such
          payments made to the Executive during the Disability
          Period shall be reduced by the sum of the amounts, if
          any, payable to the Executive at or prior to the time of
          any such payment under disability benefit plans of the
          Company or under the Social Security disability insurance
          program, and which amounts were not previously applied to
          reduce any such payment.

                    (b)  Death.  If the Executive's employment
          hereunder is terminated as a result of death, then:

                         (i)  the Company shall pay the Executive's
               estate or designated beneficiary, as soon as
               practicable after the Date of Termination, (A) any
               amounts earned, accrued or owing the Executive
               hereunder for services prior to the Date of
               Termination (including accrued deferred compensation
               and unused vacation and personal time) and (B) for a
               period of one year following the Date of
               Termination, such Base Salary and Annual Bonus as
               the Executive would have received during such period
               had he remained in the employ of the Company;

                        (ii)  the vesting and exercisability of all
               then outstanding equity-based awards shall be
               governed, as applicable, in accordance with Section
               5(d) of this Agreement or the terms of the U.S.
               Healthcare or Aetna, as the case may be, document
               under which they were initially granted (except that
               the vesting of awards granted under the U.S.
               Healthcare incentive plans prior to the Effective
               Date shall be governed by Section 1.7 of the Merger
               Agreement); and

                       (iii)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    (c)  Disability.  If the Executive's employment
          hereunder is terminated as a result of Disability, then:

                         (i)  the Company shall pay the Executive,
               as soon as practicable after the Date of
               Termination, (A) any amounts earned, accrued or
               owing the Executive hereunder for services prior to
               the Date of Termination (including accrued deferred
               compensation and unused vacation and personal time)
               and (B) for a period of one year following the Date
               of Termination, such Base Salary and Annual Bonus as
               the Executive would have received during such period
               had he remained in the employ of the Company, offset
               by any amounts received by the Executive pursuant to
               subsection (ii) of this Section 7(c);

                        (ii)  the Executive shall receive, until
               the date the Executive reaches age 65 or, if
               earlier, until his death, the salary-related
               disability benefits provided in accordance with, and
               subject to the conditions of, the long-term
               disability program then in effect for senior
               executives of the Company;

                        (iii)  the vesting and exercisability of
               all then outstanding equity-based awards shall be
               governed, as applicable, in accordance with Section
               5(d) of this Agreement or the terms of the U.S.
               Healthcare or Aetna, as the case may be, document
               under which they were initially granted (except that
               the vesting of awards granted under the U.S.
               Healthcare incentive plans prior to the Effective
               Date shall be governed by Section 1.7 of the Merger
               Agreement); and

                        (iv)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    (d)  Termination by Company for Cause or By
          Executive other than for Good Reason.  If the Executive's
          employment hereunder is terminated by the Company for
          Cause or by the Executive (other than for Good Reason),
          then:

                         (i)  the Company shall pay the Executive,
               as soon as practicable after the Date of
               Termination, any amounts earned, accrued or owing
               the Executive hereunder for services prior to the
               Date of Termination (including accrued deferred
               compensation and unused vacation and personal time);

                        (ii)  the vesting and exercisability of all
               then outstanding equity-based awards shall be
               governed, as applicable, in accordance with Section
               5(d) of this Agreement or the terms of the U.S.
               Healthcare or Aetna, as the case may be, document
               under which they were initially granted (except that
               the vesting of awards granted under the U.S.
               Healthcare incentive plans prior to the Effective
               Date shall be governed by Section 1.7 of the Merger
               Agreement); and

                       (iii)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    (e)  Termination by Company without Cause or by
          the Executive with Good Reason.  If the Executive's
          employment hereunder is terminated by the Company (other
          than for Cause or Disability) or by the Executive for
          Good Reason, then:

                         (i)  the Company shall pay the Executive,
               as soon as practicable after the Date of
               Termination, any amounts earned, accrued or owing
               the Executive hereunder for services prior to the
               Date of Termination (including accrued deferred
               compensation and unused vacation and personal time);

                        (ii)  notwithstanding any provision of any
               annual bonus plan to the contrary, the Company shall
               pay to the Executive, as soon as practicable after
               the Date of Termination, a lump sum amount, in cash,
               equal to the sum of (A) any annual bonus which has
               been allocated or awarded to the Executive for a
               completed fiscal year preceding the Date of
               Termination under any such plan and which, as of the
               Date of Termination, is contingent only upon the
               continued employment of the Executive to a
               subsequent date, and (B) a pro rata portion to the
               Date of Termination of the aggregate value of all
               contingent annual bonus awards to the Executive for
               all then uncompleted fiscal years (other than the
               fiscal year commencing in 1996) under any such plan,
               calculated as to each such award by multiplying the
               award that the Executive would have earned for the
               entire performance award period, assuming the
               achievement, at the target level, of the individual
               and corporate performance goals established with
               respect to such award, by the fraction (the
               "Fraction") obtained by dividing the number of full
               months and any fractional portion of a month during
               such performance award period through the Date of
               Termination by the total number of months contained
               in such performance award period; provided, however,
               that, in the event that the Executive's actual award
               (the "Actual Award") would have exceeded the target
               award had he remained in the employ of the Company
               until the end of any such performance award period,
               then the Company shall pay the Executive, as soon as
               practicable following the end of such period, an
               amount equal to the product of the Fraction and the
               excess of the Actual Award over the target award;
               and

                       (iii)  the Company shall pay to the
               Executive a severance payment in cash, 50% of which
               is payable in a lump sum on the Date of Termination
               and, subject to the Executive's continued compliance
               with the applicable provisions of Section 10 hereof
               (provided that the Executive be given an opportunity
               to cure (if curable) any breach of such Section 10
               in accordance with Section 10(d) hereof), the
               remaining 50% of which is payable in a lump sum on
               the first anniversary of the Date of Termination,
               equal to three times the sum of (A) the higher of
               the Executive's Base Salary as in effect immediately
               prior to the occurrence of the event or circumstance
               upon which the Notice of Termination is based and
               the Executive's annual base salary (including
               amounts deferred and any interest accrued thereon)
               in effect immediately prior to the Merger Date, and
               (B) the then current target annual bonus;

                        (iv)  (A) the exercisability of all then
               outstanding equity-based awards granted under the
               U.S. Healthcare incentive plans prior to the Merger
               Date shall be governed in accordance with the terms
               of such U.S. Healthcare incentive plans, (B) the
               vesting of restricted stock awards granted pursuant
               to Section 5(d) shall be governed in accordance with
               the terms of such Section and (C) all then
               outstanding equity-based awards granted under the
               Parent incentive plans shall continue to vest over
               the one year period following the Date of
               Termination and be exercisable through the 90 day
               period following such one year period;

                         (v)  for the thirty-six (36) month period
               immediately following the Date of Termination, the
               Company shall arrange to provide the Executive with
               life, disability, accident and health insurance
               benefits ("Insurance Benefits") and with pension
               plan benefits substantially similar, and on
               substantially similar terms, to those which the
               Executive is receiving immediately prior to the
               Notice of Termination or the economic equivalent
               thereof, which provision of Insurance Benefits shall
               satisfy all of the conditions necessary to avoid the
               imposition of any tax under section 4980B of the
               Code.  Insurance Benefits otherwise receivable by
               the Executive pursuant to this Section 7(e)(v) shall
               be reduced to the extent comparable benefits are
               actually received by, or made available to, the
               Executive without cost during the thirty-six (36)
               month period following the Executive's termination
               of employment (and any such benefits actually
               received by or made available to the Executive shall
               be reported to the Company by the Executive);

                        (vi)  if the Executive would have become
               entitled to benefits under the Company's
               postretirement health care or life insurance plans,
               as in effect immediately prior to the Effective Date
               (or, if there is a Merger Date, immediately prior to
               the Merger Date) or the Date of Termination
               (whichever is more favorable to the Executive), had
               the Executive's employment terminated on the date
               which is thirty-six (36) months after the Date of
               Termination, the Company shall provide such
               postretirement health care or life insurance
               benefits to the Executive and the Executive's
               dependents commencing on the later of (A) the date
               on which such coverage would have first become
               available (disregarding for these purposes the
               thirty-six (36) month period referred to above) and
               (B) the date on which benefits described in
               subsection (v) of this Section 7(e) shall terminate;
               and

                       (vii)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    8.  Gross-Up for Excise Tax.  (a)  Whether or
          not the Executive becomes entitled to any payments under
          Section 7 hereof, if any payments or benefits received or
          to be received by the Executive (whether pursuant to
          Section 5 hereof or any other provision of this Agreement
          or any other plan, arrangement or agreement with the
          Company or, with respect to his employment by the
          Company, with any other person (such payments or
          benefits, excluding the Gross-Up Payment described
          herein, being hereinafter referred to as the "Total
          Payments") will be subject to any excise tax imposed
          under section 4999 of the Internal Revenue Code of 1986,
          as amended (the "Excise Tax"), the Company shall pay to
          the Executive an additional amount (the "Gross-Up
          Payment") such that the net amount retained by the
          Executive, after deduction of any Excise Tax on the Total
          Payments and any federal, state and local income and
          employment taxes and Excise Tax upon the Gross-Up
          Payment, shall be equal to the Total Payments.

                    (b)  For purposes of determining whether any of
          the Total Payments will be subject to the Excise Tax and
          the amount of such Excise Tax, (i) all of the Total
          Payments shall be treated as "parachute payments" (within
          the meaning of section 280G(b)(2) of the Code) unless, in
          the opinion of Tax Counsel, a reasonable basis exists for
          determining that such payments or benefits (in whole or
          in part) do not constitute parachute payments, including
          by reason of section 280G(b)(4)(A) of the Code, (ii) all
          "excess parachute payments" within the meaning of section
          280G(b)(1) of the Code shall be treated as subject to the
          Excise Tax unless, in the opinion of Tax Counsel, a
          reasonable basis exists for determining that such excess
          parachute payments (in whole or in part) represent
          reasonable compensation for services actually rendered
          (within the meaning of section 280G(b)(4)(B) of the Code)
          in excess of the "base amount" (within the meaning of
          section 280G(b)(3) of the Code) allocable to such
          reasonable compensation, or are otherwise not subject to
          the Excise Tax, and (iii) the value of any noncash
          benefits or any deferred payment or benefit shall be
          determined by the Auditor in accordance with the
          principles of sections 280G(d)(3) and (4) of the Code. 
          For purposes of determining the amount of the Gross-Up
          Payment, the Executive shall be deemed to pay federal
          income tax at the highest marginal rate of federal income
          taxation in the calendar year in which the Gross-Up
          Payment is to be made and state and local income taxes at
          the highest marginal rate of taxation in the state and
          locality of the Executive's residence on the Date of
          Termination (or if there is no Date of Termination, then
          the date on which the Gross-Up Payment is calculated for
          purposes of this Section 8), net of the maximum reduction
          in federal income taxes which could be obtained from
          deduction of such state and local taxes.

                    (c)  In the event that the Excise Tax is
          finally determined to be less than the amount taken into
          account hereunder in calculating the Gross-Up Payment,
          the Executive shall repay to the Company, at the time
          that the amount of such reduction in Excise Tax is
          finally determined, the portion of the Gross-Up Payment
          attributable to such reduction (plus that portion of the
          Gross-Up Payment attributable to the Excise Tax and
          federal, state and local income and employment taxes
          imposed on the Gross-Up Payment being repaid by the
          Executive to the extent that such repayment results in a
          reduction in Excise Tax and/or a federal, state or local
          income or employment tax deduction) plus interest on the
          amount of such repayment at 120% of the rate provided in
          section 1274(b)(2)(B) of the Code.  In the event that the
          Excise Tax is determined to exceed the amount taken into
          account hereunder in calculating the Gross-Up Payment
          (including by reason of any payment the existence or
          amount of which cannot be determined at the time of the
          Gross-Up Payment), the Company shall make an additional
          Gross-Up Payment in respect of such excess (plus any
          interest, penalties or additions payable by the Executive
          with respect to such excess) at the time that the amount
          of such excess is finally determined.  The Executive and
          the Company shall each reasonably cooperate with the
          other in connection with any administrative or judicial
          proceedings concerning the existence or amount of
          liability for Excise Tax with respect to the Total
          Payments.

                    9.  Mitigation.  The Executive shall not be
          required to mitigate amounts payable pursuant to Section
          7 hereof by seeking other employment or otherwise, nor,
          except as provided in Section 7(e)(v), shall there be any
          offset against such payments on account of (a) any
          remuneration attributable to any subsequent employment
          that he may obtain or (b) any claims the Company may have
          against the Executive.

                    10.  Noncompetition and Confidentiality.

                    (a)  Noncompetition.  Prior to, and for a
          period of one year following, termination of the
          Executive's employment during the Term other than by the
          Company without Cause or by the Executive for Good
          Reason, the Executive shall not become associated,
          whether as a principal, partner, employee, consultant or
          shareholder (other than as a holder of not in excess of
          1% of the outstanding voting shares of any publicly
          traded company), with any entity that is actively engaged
          in any geographic area in any business which is in
          substantial and direct competition with the Business;
          provided, however, nothing in this Section 10(a) shall
          preclude the Executive from performing services solely
          and exclusively for a division or subsidiary of such an
          entity that is engaged in a noncompetitive business.

                    (b)  Nondisclosure, Nonsolicitation and
          Cooperation.

                         (i)  the Executive shall not (except to
               the extent required by an order of a court having
               competent jurisdiction or under subpoena from an
               appropriate government agency) disclose to any third
               person, whether during or subsequent to the
               Executive's employment with the Company, any trade
               secrets; customer lists; product development and
               related information; marketing plans and related
               information; sales plans and related information;
               operating policies and manuals; business plans;
               financial records; or other financial, commercial,
               business or technical information related to the
               Company or any subsidiary or affiliate thereof
               unless such information has been previously
               disclosed to the public by the Company or has become
               public knowledge other than by a breach of this
               Agreement; provided, however, that this limitation
               shall not apply to any such disclosure made while
               the Executive is employed by the Company, or any
               subsidiary or affiliate thereof in the ordinary
               course of the performance of the Executive's duties;

                        (ii)  prior to, and for two years
               following, termination of the Executive's employment
               during the Term, the Executive shall not attempt to
               induce any employee or Insurance Agent (as defined
               below) employed by or performing services for the
               Business to be employed or perform services
               elsewhere, provided that this covenant shall not
               preclude the Executive from taking any actions
               during the Term that (x) are intended to benefit the
               Company or any subsidiary or affiliate and (y) do
               not benefit the Executive financially other than as
               an employee or stockholder of the Company;

                       (iii)  prior to, and for two years
               following, termination of the Executive's employment
               during the Term, the Executive shall not attempt to
               induce any insurance agent or agency, insurance
               broker, broker-dealer or supplier of the Business to
               cease providing services to the Business, provided
               that this covenant shall not preclude the Executive
               from taking any actions during the Term that (x) are
               intended to benefit the Company or any subsidiary or
               affiliate and (y) do not benefit the Executive
               financially other than as an employee or stockholder
               of the Company; and

                        (iv)  prior to, and for two years
               following, termination of the Executive's employment
               during the Term, the Executive shall not attempt to
               solicit, on behalf of any person or entity other
               than the Business, the trade of any individual or
               entity which, at the time of the solicitation, is a
               customer of the Business, or which the Business is
               undertaking reasonable steps to procure as a
               customer at the time of or immediately preceding
               termination of the Term; provided, however, that
               this limitation shall only apply to (x) any product
               or service which is in competition with a product or
               service of the Business and (y) with respect to any
               customer with whom the Executive has or had (by
               virtue of the Executive's position or otherwise) a
               personal relationship.

          Solely for purposes of subsection (b)(ii) of this Section
          10, the term "Insurance Agent" shall mean those insurance
          agents or agencies representing the Company or any
          subsidiary or affiliate thereof, that are exclusive or
          career agents or agencies of the Company or any
          subsidiary or affiliate thereof, or any insurance agents
          or agencies which derive 50% or more of their business
          revenue from the Company or any subsidiary or affiliate
          thereof (calculated on an aggregate basis for the 12-
          month period prior to the date of determination or such
          other similar period for which such information is more
          readily available).

                    (c)  Company Property.  Promptly following the
          Executive's termination of the Executive's employment,
          the Executive shall return to the Company all property of
          the Company, and all copies thereof in the Executive's
          possession or under his control.

                    (d)  Intention of the Parties.  If any
          provision of Section 10 is determined by an arbitrator
          (or a court of competent jurisdiction asked to enforce
          the decision of the arbitrator) not to be enforceable in
          the manner set forth in this Agreement, the Company and
          Executive agree that it is the intention of the parties
          that such provision should be enforceable to the maximum
          extent possible under applicable law and that such
          arbitrator (or court) shall reform such provision to make
          it enforceable in accordance with the intent of the
          parties.  Executive acknowledges that a material part of
          the inducement for the Company to provide the salary and
          benefits evidenced hereby is Executive's covenants set
          forth in Section 10(a), (b) and (c) and that the
          covenants and obligations of Executive with respect to
          nondisclosure and nonsolicitation relate to special,
          unique and extraordinary matters and that a violation of
          any of the terms of such covenants and obligations will
          cause the Company irreparable injury for which adequate
          remedies are not available at law.  Therefore, Executive
          agrees that, if Executive shall materially breach any of
          those covenants following termination of employment and
          such breach is not cured (if curable) within ten (10)
          days following receipt of written notification thereof
          that specifies the manner in which the Company believes
          the Executive has breached such covenants, the Company
          shall have no further obligation to pay Executive any
          benefits otherwise payable under Sections 7(e)(iii), (v)
          and (vi) and the Company shall be entitled to an
          injunction, restraining order or such other equitable
          relief (without the requirement to post a bond)
          restraining Executive from committing any violation of
          the covenants and obligations contained in Section 10(a),
          (b) and (c).  The remedies in the preceding sentence are
          cumulative and are in addition to any other rights and
          remedies the Company may have at law or in equity as an
          arbitrator (or court) shall reasonably determine.

                    (e)  Waiver.  Without limiting the generality
          of the foregoing, upon request of the Executive prior to
          engaging in any conduct otherwise prohibited by this
          Section 10, the Company may, in its sole discretion,
          waive in writing, on such terms and conditions as it may
          deem appropriate, any violation of this Section 10 which
          would otherwise occur due to such conduct.

                    11.  Indemnification; Attorneys' Fees.  The
          Company shall indemnify the Executive to the full extent
          authorized by law and the Charter and By-Laws of the
          Company, as applicable, for all expenses, costs,
          liabilities and legal fees which the Executive may incur
          in the discharge or course of his duties hereunder.  The
          Executive shall be insured under the Company's Directors'
          and Officers' Liability Insurance Policy as in effect
          from time to time.  The Executive shall be deemed a third
          party beneficiary with respect to Section 7.6 of the
          Merger Agreement and, as such, shall have the right to
          enforce such provisions as if he were party to the Merger
          Agreement.  In connection with any dispute or proceeding
          arising under this Agreement where the Executive is
          ultimately the substantially prevailing party, the
          Company shall promptly reimburse Executive for all costs,
          including without limitation the reasonable attorneys'
          fees of any attorney of the Executive's choosing,
          incurred by the Executive in any such dispute or
          proceeding arising under this Agreement.  Any termination
          of the Executive's employment or of this Agreement shall
          have no effect on the continuing operation of this
          Section 11.

                    12.  Successors; Binding Agreement.

                    (a)  Company's Successors.  The Company shall
          require any successor (whether direct or indirect, by
          purchase, merger, consolidation or otherwise) to all or
          substantially all of the business and/or assets of the
          Company to expressly assume and agree to perform this
          Agreement in the same manner and to the same extent that
          the Company would be required to perform it if no such
          succession had taken place.  As used in this Agreement,
          "Company" shall mean the Company as hereinbefore defined
          and any successor to its business and/or assets as
          aforesaid which executes and delivers the agreement
          provided for in this Section 12 or which otherwise
          becomes bound by all the terms and provisions of this
          Agreement by operation of law.  This Agreement shall not
          otherwise be assignable by the Company.

                    (b)  Executive's Successors.  This Agreement
          shall not be assignable by the Executive.  This Agreement
          and all rights of the Executive hereunder shall inure to
          the benefit of and be enforceable by the Executive's
          personal or legal representatives, executors,
          administrators, successors, heirs, distributees, devisees
          and legatees.  Upon the Executive's death, all amounts to
          which he is entitled hereunder, unless otherwise provided
          herein, shall be paid in accordance with the terms of
          this Agreement to the Executive's devisee, legatee, or
          other designee or, if there be no such designee, to the
          Executive's estate.

                    13.  Notices.  For the purpose of this
          Agreement, notices and all other communications provided
          for in the Agreement shall be in writing and shall be
          deemed to have been duly given when delivered or received
          by facsimile or three (3) days after mailing by United
          States certified mail, return receipt requested, postage
          prepaid, addressed, if to the Executive, to the address
          inserted below the Executive's signature on the final
          page hereof and, if to the Company, to the attention of
          the General Counsel except where this Agreement provides
          otherwise.  Notice of change of address or addressee
          shall be effective only upon actual receipt.

                    14.  Disputes.  This Agreement shall be
          construed in accordance with and governed by the law of
          the Commonwealth of Pennsylvania (without regard to
          principles of conflict of laws).  All claims and
          controversies related to or stemming from this Agreement
          or the Executive's employment with the Company, except
          actions for equitable relief pending an arbitration
          award, shall be submitted to binding arbitration in Blue
          Bell, Pennsylvania by a panel of three neutral
          arbitrators under the Commercial Arbitration Rules of the
          American Arbitration Association.  Judgment upon an award
          of the arbitrators may be entered and enforced in any
          court having jurisdiction.

                    15.  Miscellaneous.  No provision of this
          Agreement may be modified, waived or discharged unless
          such waiver, modification or discharge is agreed to in
          writing and signed by the Executive and such officer as
          may be specifically designated by the Board.  No waiver
          by either party hereto at any time of any breach by the
          other party hereto of, or of any lack of compliance with,
          any condition or provision of this Agreement to be
          performed by such other party shall be deemed a waiver of
          similar or dissimilar provisions or conditions at the
          same or at any prior or subsequent time.  All references
          to sections of the Exchange Act or the Code shall be
          deemed also to refer to any successor provisions to such
          sections.  Subject to the provisions of Section 5(j) and
          8 hereof, payments provided for hereunder shall be paid
          net of any applicable withholding required under federal,
          state or local law and any additional withholding to
          which the Executive has agreed.  The obligations of the
          Company and the Executive under this Agreement which by
          their nature may require either partial or total
          performance after the expiration of the Term shall
          survive such expiration.  The invalidity or
          unenforceability of any provision of this Agreement shall
          not affect the validity or enforceability of any other
          provision of this Agreement, which shall remain in full
          force and effect.

                    16.  Counterparts.  This Agreement may be
          executed in one or more counterparts, each of which shall
          be deemed to be an original but all of which together
          will constitute one and the same instrument.

                    17.  Entire Agreement.  This Agreement between
          the Company and the Executive sets forth the entire
          agreement of the parties hereto in respect of the subject
          matter contained herein and supersedes, as of the
          Effective Date, all prior agreements, promises,
          covenants, arrangements, communications, representations
          or warranties, whether oral or written, by the parties
          hereto in respect of the subject matter contained herein;
          and any prior agreement of the parties hereto in respect
          of the subject matter contained herein shall be
          terminated and canceled as of the Effective Date.


                    IN WITNESS WHEREOF, the parties hereto have
          executed this Agreement on March 30, 1996 to be effective
          as of the Effective Date.

                                   U.S. Healthcare

                                   By:_______________________
                                      Name:
                                      Title:

                                   __________________________
                                   Arthur Leibowitz, M.D. 

                                   __________________________
                                   __________________________
                                   __________________________
                                   Address of Executive

           







                             EMPLOYMENT AGREEMENT

                    AGREEMENT, dated as of March 30, 1996, by and
          between Timothy Nolan (the "Executive") and U.S.
          Healthcare, Inc., a Pennsylvania corporation ("U.S.
          Healthcare" or the "Company").

                    WHEREAS, the Board of Directors of the Company
          (the "Board") and the Executive each desires that the
          Executive continue to furnish services to the Company on
          the terms and conditions hereinafter set forth; and

                    WHEREAS, the parties desire to enter into this
          agreement setting forth the terms and conditions of the
          continued employment of the Executive with the Company;

                    NOW, THEREFORE, in consideration of the
          premises and the mutual agreements set forth below, and
          intending to be legally bound hereby, the parties hereto
          hereby agree as follows:

                    1.  Employment.  The Company hereby agrees to
          employ the Executive, and the Executive hereby accepts
          such employment, on the terms and conditions hereinafter
          set forth.

                    2.  Term; Parties.  (a) Term.  The term of this
          Agreement (as extended from time to time, the "Term")
          shall commence on the date (the "Effective Date") of
          execution of the Agreement and Plan of Merger (the
          "Merger Agreement"), dated March 30, 1996, by and among
          the Company, Aetna Life and Casualty Company ("Aetna")
          and Butterfly, Inc. ("Parent"), and shall end on the
          fifth anniversary of the consummation of the merger
          contemplated by the Merger Agreement (the "Merger Date")
          or, if such merger is not consummated, the Effective
          Date, unless further extended as provided in this Section
          2 or sooner terminated in the event that Executive's
          employment is terminated pursuant to Section 6. 
          Commencing on the fifth anniversary of the Merger Date
          (or, if there is no Merger Date, on the fifth anniversary
          of the Effective Date) and on each such subsequent
          anniversary, the Term shall automatically be extended for
          one additional year unless, not later than 180 days prior
          to such anniversary, the Company or the Executive shall
          have given notice not to extend the Term.  The giving by
          the Company of a notice not to extend the Term shall not
          constitute a termination without Cause or a termination
          for Good Reason (each as defined in Section 6).

                    (b)  Parties.  On and after the Merger Date,
          this Agreement shall be assigned to and assumed by Parent
          and all references herein to the Company shall mean
          Parent.  On and after the Merger Date, to the extent that
          the Executive's employment is with U.S. Healthcare or
          Aetna, the obligation of the Company hereunder shall
          include the obligation to cause U.S. Healthcare or Aetna
          to act in accordance with the terms hereof.

                    3.  Position and Duties.  Prior to the Merger
          Date, the Executive shall serve as an employee of U.S.
          Healthcare with the title of Chief Sales Officer of U.S.
          Healthcare, shall report directly to the Co-Presidents
          and shall be responsible for all such matters relating to
          the lines of business and operations of U.S. Healthcare
          (including but not limited to all HMO, POS, indemnity
          health insurance and other lines of business and
          operations, the "Business") as the Co-Presidents and the
          Executive shall mutually determine.  

                    From and after the Merger Date, the Business
          shall also include all of the domestic (U.S.) lines of
          business and operations of Aetna Health Plans (including
          but not limited to all Health, Specialty Health and Group
          Insurance lines of business and operations), and the
          Executive shall assume a similar position and similar
          responsibilities in matters relating to the Business
          except as may otherwise be mutually agreed upon between
          the Executive and the Co-Presidents of the Business.  

                    During the Term, the Executive shall report
          directly and exclusively to the Co-Presidents of the
          Business.  The Executive agrees to devote substantially
          all his full working time, attention and energies during
          normal business hours to the performance of his duties
          for the Company, provided that the Executive may continue
          to participate and engage in activities not associated
          with the Company consistent with the Executive's past
          practices at U.S. Healthcare.

                    4.  Place of Performance.  The principal place
          of employment and office of the Executive shall be in
          Blue Bell, Pennsylvania, or such other location as may be
          agreed to in writing by the Executive.

                    5.  Compensation and Related Matters.

                    (a)  Base Salary.  As compensation for the
          performance by the Executive of his duties hereunder, the
          Company shall pay the Executive a base salary at an
          annual rate that is no less than the Executive's annual
          salary rate for 1996, including any deferred compensation
          and interest or earnings on such year's deferred
          compensation under the Company's current deferred
          compensation program (such amount, as from time to time
          in effect, hereinafter referred to as "Base Salary"). 
          Base Salary shall be payable in accordance with U.S.
          Healthcare's normal payroll practices, shall be reviewed
          annually and may be increased upon such review.  Base
          Salary, once increased, may not be decreased.

                    (b)  Annual Bonus.  The Executive shall be
          entitled to an annual bonus upon the attainment by the
          Company, U.S. Healthcare and/or the Business of
          reasonable performance goals, established in accordance
          with the past practice of U.S. Healthcare.  The
          Executive's target bonus shall be equal to 80% of Base
          Salary, with appropriate increases or decreases upon the
          attainment of specified levels of Company, U.S.
          Healthcare and/or Business performance (such bonus
          hereinafter referred to as the "Annual Bonus"); provided,
          however, that with respect to fiscal year 1997, in no
          event shall the Annual Bonus be less than 100% of target. 
          If the Merger Date occurs during the fiscal year
          commencing in 1996, the Company shall pay to the
          Executive for such 1996 fiscal year 100% of the bonus
          which he would have received for the entire 1996 fiscal
          year as determined by U.S. Healthcare.

                    (c)  Sign-On Bonus.  Upon the Merger Date, the
          Company shall pay the Executive, in cash, an amount equal
          to the sum of (i) the Executive's then-current base
          salary (including deferred compensation and interest or
          earnings on such year's deferred compensation) and (ii)
          the aggregate value of the annual bonus paid or awarded
          (in cash and in shares of U.S. Healthcare common stock)
          to the Executive in respect of 1995, or, if the Merger
          Date is subsequent to December 31, 1996 and if the
          aggregate value of the annual bonus so paid or awarded to
          the Executive in respect of 1996 is higher, such 1996
          annual bonus (the sum of such amounts hereinafter
          referred to as the "Sign-On Bonus").

                    (d)  Stay Bonus.  The Executive shall be
          granted, as of the Merger Date, that number of restricted
          shares of common stock of Parent ("Parent Stock") which,
          when multiplied by the average closing price per share of
          Parent Stock on the ten trading dates immediately
          following the Merger Date, shall be equal in amount to
          the Sign-On Bonus (the "Restricted Stock Award").  The
          Restricted Stock Award shall be granted pursuant to a
          plan (i) that meets the requirements of Rule 16b-3
          promulgated under Section 16 of the Securities Exchange
          Act of 1934, as amended (the "Exchange Act"), (ii) the
          terms of which are acceptable to U.S. Healthcare and
          (iii) the shares of Company Stock reserved for issuance
          under which shall be registered in a timely manner on a
          Form S-8 (the "Plan").  Notwithstanding any provision of
          this Agreement to the contrary, the Restricted Stock
          Award shall become vested (i.e., all restrictions with
          respect thereto shall lapse) on the earliest to occur of
          (x) the second anniversary of the Merger Date, (y) a
          "change in control of Parent" (as defined in the Plan)
          following the Merger Date, or (z) upon termination of the
          Executive's employment by reason of death or Disability
          (as defined in Section 6 hereof), by the Company other
          than for Cause (as defined in Section 6 hereof) or by the
          Executive for Good Reason (as defined in Section 6
          hereof).  If the Executive's employment is terminated by
          the Executive without Good Reason or by the Company for
          Cause prior to the second anniversary of the Merger Date,
          the Restricted Stock Award shall be forfeited in full. 
          The Restricted Stock Award shall be subject to all other
          terms and conditions of the Plan, the rules and
          regulations thereunder, the applicable provisions of this
          Agreement and the document evidencing its terms and
          conditions reasonably acceptable to Executive.  The
          Restricted Stock Award is in addition to any other equity
          award made to the Executive under paragraph (e) of this
          Section 5 and shall not be offset against or reduce such
          award or any other award, benefit or amount due under
          this Agreement.

                    (e)  Future Equity Grants.  In addition to the
          Restricted Stock Award made pursuant to subsection (d) of
          this Section 6, the Executive shall from time to time be
          granted stock options and shares of restricted stock or
          other equity-based awards (collectively, "Equity Grants")
          on a basis no less favorable than such grants are made to
          similarly situated senior officers of the Company. 
          Without limiting the generality of the foregoing, if the
          Merger Date occurs after Parent has granted awards in
          respect of calendar year 1997, the Executive shall be
          entitled to receive an Equity Grant in respect of 1997. 

                    (f)  Expenses.  The Company shall reimburse the
          Executive for all reasonable business expenses, subject
          to the applicable policies and procedures of the Company
          then in force.

                    (g)  Vacation.  The Executive shall be entitled
          to 20 vacation days and that number of personal days and
          holidays as is consistent with U.S. Healthcare's current
          practices (including, with respect to up to the greater
          of 25 days or the number of days the Executive has
          accrued at the Effective Date, cash compensation in lieu
          thereof upon termination or expiration of this Agreement)
          or, if more favorable to the Executive, in accordance
          with the policies applicable generally to senior
          executives of the Company or any of its subsidiaries.

                    (h)  Services Furnished.  The Company shall
          furnish the Executive with appropriate office space and
          such other facilities and services as shall be suitable
          to the Executive's position and adequate for the
          performance of his duties as set forth in Section 3
          hereof and on a basis at least as favorable as in effect
          immediately prior to the Merger Date, such office space
          and other facilities and services to be furnished at the
          location set forth in Section 4 hereof.

                    (i)  Other Benefits.  The Company shall provide
          to the Executive such employee benefit plans and
          arrangements as are generally available to senior
          officers of the Company and its subsidiaries, including
          but not limited to retirement benefits, group life
          insurance, medical and dental insurance, and accident and
          disability insurance, which shall be provided on a basis
          reasonably comparable in the aggregate to those provided
          to him immediately prior to the Merger Date or, if more
          favorable to the Executive in the aggregate, to those
          provided to other senior officers of the Company and its
          subsidiaries.

                    (j)  Restrictions on Sale of Securities;
          Payment of Taxes.  From the date hereof to the earlier of
          the Merger Date or the date on which the transaction
          contemplated by the Merger Agreement is abandoned, the
          Executive agrees that he will not sell or otherwise
          dispose of any shares of the common stock of U.S.
          Healthcare ("U.S. Healthcare Stock"), including shares
          subject to option, except for the partial cash-out of
          such shares and options in connection with the
          transaction contemplated by the Merger Agreement.  During
          the one-year period following the Merger Date, the
          Executive agrees that, so long as he remains employed by
          the Company or any of its subsidiaries, he will not sell
          or otherwise dispose of any shares or option shares of
          Parent Stock.  Nothing herein shall prohibit the
          Executive from transferring any shares of U.S. Healthcare
          Stock or Parent Stock to a "Permitted Transferee," as
          defined in Article 5A.III of the U.S. Healthcare Articles
          of Incorporation.  In consideration of the Executive's
          agreement under this Section 5, the Company shall
          promptly reimburse the Executive for any and all income,
          wage and employment taxes (and any and all income and
          employment taxes on the reimbursement amount), payable by
          the Executive as the result of the acceleration of the
          vesting of restricted shares of U.S. Healthcare Stock on
          the Effective Date or as the result of the partial cash-
          out of shares of U.S. Healthcare Stock still subject to
          option on the Merger Date.  In no event shall Executive
          be reimbursed for any income, wage or employment taxes
          that result from the exercise of any options.

                    6.  Termination.  The Executive's employment
          hereunder may be terminated as follows:

                    (a)  Death.  The Executive's employment shall
          terminate upon his death, and the date of his death shall
          be the Date of Termination.

                    (b)  Disability.  If, as a result of the
          Executive's incapacity due to physical or mental illness
          (as determined by a medical doctor mutually agreed to by
          the Executive or his legal representative and the
          Company), the Executive shall have been absent from his
          duties hereunder on a full-time basis for the entire
          period of six consecutive months and, within thirty (30)
          days after written Notice of Termination (as defined in
          subsection (f) of this Section 6) is given, shall not
          have returned to the performance of his duties hereunder
          on a full-time basis ("Disability"), the Company may
          terminate the Executive's employment hereunder.  In this
          event, the Date of Termination shall be thirty (30) days
          after Notice of Termination is given (provided that the
          Executive shall not have returned to the performance of
          his duties on a full-time basis during such thirty (30)
          day period).

                    (c)  Cause.  The Company may terminate the
          Executive's employment in the event there occurs one or
          more of the following events that has not been cured (if
          curable) within thirty (30) days after written notice
          thereof has been given by the Company to the Executive
          ("Cause"); provided that the Company shall have delivered
          a written notice to the Executive within 120 days of its
          having actual knowledge of the occurrence of any of such
          events stating that the Company intends to terminate the
          Executive's employment for Cause and specifying the
          factual basis for such termination:

                         (i) the willful failure by the Executive
               to perform substantially the Executive's duties as
               an employee of the Company (other than due to
               physical or mental illness or after the delivery of
               a Notice of Termination for Good Reason by the
               Executive pursuant to subsection (f) of this Section
               6); 

                         (ii) the Executive's engaging in
               misconduct that is materially injurious to the
               Company or any subsidiary or any affiliate of the
               Company;

                         (iii) the Executive's having been
               convicted of, or entered a plea of nolo contendere
               to, a crime that constitutes a felony;

                         (iv) the material breach by the Executive
               of any written covenant or agreement not to compete
               with the Company or any subsidiary or any affiliate;
               or 

                         (v) the breach by the Executive of his
               duty of loyalty to the Company which shall include,
               without limitation (A) the disclosure by the
               Executive of any confidential information pertaining
               to the Company or any subsidiary or any affiliate of
               the Company, other than (x) in the ordinary course
               of the performance of his duties on behalf of the
               Company or (y) pursuant to a judicial or
               administrative subpoena from a court or governmental
               authority with jurisdiction over the matter in
               question, (B) the harmful interference by the
               Executive in the business or operations of the
               Company or any subsidiary or any affiliate of the
               Company, (C) any attempt by the Executive to induce
               any employee, insurance agent, insurance broker or
               broker-dealer of the Company or any subsidiary or
               any affiliate to be employed or perform services
               elsewhere, other than actions taken by the Executive
               that are intended to benefit the Company or any
               subsidiary or affiliate and do not benefit the
               Executive financially other than as an employee or
               stockholder of the Company, (D) any attempt by the
               Executive to solicit the trade of any customer or
               supplier, or prospective customer or supplier, of
               the Company on behalf of any person other than the
               Company or a subsidiary thereof, other than actions
               taken by the Executive that are intended to benefit
               the Company or any subsidiary or affiliate and do
               not benefit the Executive financially other than as
               an employee or stockholder of the Company, provided,
               however, that this provision shall only apply to any
               product or service which is in competition with a
               product or service of the Company or any subsidiary
               or affiliate thereof or (E) following the Merger
               Date, any breach or violation of the Company's Code
               of Conduct, as amended from time to time sufficient
               to warrant a for Cause termination consistent with
               the Company's past practice, consistently applied.

          Notwithstanding the foregoing, (x) the failure of the
          Executive, the Company, U.S. Healthcare or the Business
          to achieve any particular level of performance shall not,
          in and of itself, constitute Cause hereunder, (y) neither
          a breach of the Executive's duty of loyalty to the
          Company as described in subclause (A) nor a breach of the
          Company's Code of Conduct as described in subclause (E)
          shall constitute Cause hereunder unless such breach has
          had or could reasonably be expected to have a significant
          adverse effect on the business or reputation of the
          Company and (z) the occurrence of any of the events
          described above, if done inadvertently or of de minimis
          effect, shall not constitute "Cause". 

                    (d)  Good Reason.  The Executive may terminate
          his employment in the event there occurs one or more of
          the following events, without the written consent of the
          Executive, that has not been cured (if curable) within
          thirty (30) days after written notice thereof has been
          given by the Executive to the Company ("Good Reason");
          provided that the Executive shall have delivered a
          written notice to the Chief Executive Officer of the
          Company within 120 days of his having actual knowledge of
          the occurrence of the event or events constituting Good
          Reason stating that he intends to terminate his
          employment for Good Reason and specifying the factual
          basis for such termination:

                         (i)  a reduction in the Executive's annual
               Base Salary or incentive compensation opportunity as
               provided under Sections 5(a) and (b);

                        (ii)  a reduction in the Executive's
               positions, an adverse change in the Executive's
               reporting relationship or a material reduction in
               the Executive's duties and responsibilities, in each
               case from those described in Section 3 hereof;

                       (iii)  the relocation of the Executive's
               principal place of employment to a location more
               than 20 miles from the location at which he
               performed his principal duties on the date
               immediately prior to such relocation, or requiring
               the Executive to perform the principal portion of
               his duties in the greater Hartford, Connecticut
               area;

                        (iv)  a breach of the obligation to provide
               the Executive with the benefits required to be
               provided in accordance with Section 5(i);

                         (v)  a failure by the Company to pay any
               amounts due and owing to the Executive within 10
               days following written notice from the Executive of
               such failure to pay; 

                        (vi)  any other material breach of the
               Company's obligations to the Executive hereunder
               that materially affects the compensation or benefits
               payable to Executive or materially impairs the
               Executive's ability to perform the duties and
               responsibilities of his position;

                         (vii)  the failure of the Company to
               obtain the assumption and agreement in writing of
               its obligation to perform this Agreement in
               accordance with Section 12(a) hereof (A) by Parent
               on the Merger Date and (B) following the Merger
               Date, by any successor to Parent on the effective
               date of such succession; or

                         (viii)  a breach of Section 7.11(c) of the
               Merger Agreement.

          The Executive's continued employment shall not constitute
          consent to, or a waiver of rights with respect to, any
          act or failure to act constituting Good Reason hereunder. 
          In the event of a termination for Good Reason, the Date
          of Termination shall be the date specified in the Notice
          of Termination, which shall be no more than thirty (30)
          days after the Notice of Termination.

                    (e)  Other Terminations.  If the Executive's
          employment is terminated hereunder for any reason other
          than as set forth in subsections (a) through (d) of this
          Section 6, the date on which a Notice of Termination is
          given or any later date (within 30 days) set forth in
          such Notice of Termination shall be the Date of
          Termination.

                    (f)  Notice of Termination.  Any purported
          termination of the Executive's employment (other than
          termination pursuant to subsection (a) of this Section 6)
          shall be communicated by written Notice of Termination to
          the other party hereto in accordance with Section 13
          hereof.  For purposes of this Agreement, a "Notice of
          Termination" shall mean a notice that shall indicate the
          specific termination provision in this Agreement relied
          upon and shall set forth in reasonable detail the facts
          and circumstances claimed to provide a basis for
          termination of the Executive's employment under the
          provision so indicated.
          In addition, prior to the second anniversary of the
          Merger Date, a Notice of Termination is required to be
          signed by the Co-Presidents.

                    (g)  Dispute Concerning Termination.  If within
          fifteen (15) days after any Notice of Termination (other
          than with respect to a termination of the Executive's
          employment by the Company without Cause) is given, or, if
          later, prior to the Date of Termination (as determined
          without regard to this Section 6(g)), the party receiving
          such Notice of Termination notifies the other party that
          a dispute exists concerning the termination, the Date of
          Termination shall be extended until the earlier of (i)
          the date on which the Term ends or (ii) the date on which
          the dispute is finally resolved, either by mutual written
          agreement of the parties or by binding arbitration;
          provided, however, that the Date of Termination shall be
          extended by a notice of dispute given by the Executive
          only if such notice is given in good faith and the
          Executive pursues the resolution of such dispute with
          reasonable diligence.

                    (h)  Compensation During Dispute.  If the Date
          of Termination is extended in accordance with subsection
          (g) of this Section 6, the Company shall continue to pay
          the Executive the full compensation in effect when the
          notice giving rise to the dispute was given (including,
          but not limited to, Base Salary and Annual Bonus) and
          continue the Executive as a participant in all
          compensation, benefit and insurance plans in which the
          Executive was participating when the notice giving rise
          to the dispute was given, until the Date of Termination,
          as determined in accordance with subsection (g) of this
          Section 6.  Amounts paid under this Section 6(h) shall
          not be offset against or reduce any other amounts due
          under Section 7 of this Agreement.

                    7.  Compensation During Disability or Upon
          Termination.

                    (a)  Disability Period.  During any period that
          the Executive fails to perform his duties hereunder as a
          result of incapacity due to physical or mental illness
          ("Disability Period"), the Executive shall continue to
          (i) receive his full Base Salary, (ii) remain eligible to
          receive an Annual Bonus under Section 5(b) hereof, and
          (iii) participate in the programs described in Section
          5(i) hereof (except to the extent such participation is
          not permitted under the terms of such programs).  Such
          payments made to the Executive during the Disability
          Period shall be reduced by the sum of the amounts, if
          any, payable to the Executive at or prior to the time of
          any such payment under disability benefit plans of the
          Company or under the Social Security disability insurance
          program, and which amounts were not previously applied to
          reduce any such payment.

                    (b)  Death.  If the Executive's employment
          hereunder is terminated as a result of death, then:

                         (i)  the Company shall pay the Executive's
               estate or designated beneficiary, as soon as
               practicable after the Date of Termination, (A) any
               amounts earned, accrued or owing the Executive
               hereunder for services prior to the Date of
               Termination (including accrued deferred compensation
               and unused vacation and personal time) and (B) for a
               period of one year following the Date of
               Termination, such Base Salary and Annual Bonus as
               the Executive would have received during such period
               had he remained in the employ of the Company;

                        (ii)  the vesting and exercisability of all
               then outstanding equity-based awards shall be
               governed, as applicable, in accordance with Section
               5(d) of this Agreement or the terms of the U.S.
               Healthcare or Aetna, as the case may be, document
               under which they were initially granted (except that
               the vesting of awards granted under the U.S.
               Healthcare incentive plans prior to the Effective
               Date shall be governed by Section 1.7 of the Merger
               Agreement); and

                       (iii)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    (c)  Disability.  If the Executive's employment
          hereunder is terminated as a result of Disability, then:

                         (i)  the Company shall pay the Executive,
               as soon as practicable after the Date of
               Termination, (A) any amounts earned, accrued or
               owing the Executive hereunder for services prior to
               the Date of Termination (including accrued deferred
               compensation and unused vacation and personal time)
               and (B) for a period of one year following the Date
               of Termination, such Base Salary and Annual Bonus as
               the Executive would have received during such period
               had he remained in the employ of the Company, offset
               by any amounts received by the Executive pursuant to
               subsection (ii) of this Section 7(c);

                        (ii)  the Executive shall receive, until
               the date the Executive reaches age 65 or, if
               earlier, until his death, the salary-related
               disability benefits provided in accordance with, and
               subject to the conditions of, the long-term
               disability program then in effect for senior
               executives of the Company;

                        (iii)  the vesting and exercisability of
               all then outstanding equity-based awards shall be
               governed, as applicable, in accordance with Section
               5(d) of this Agreement or the terms of the U.S.
               Healthcare or Aetna, as the case may be, document
               under which they were initially granted (except that
               the vesting of awards granted under the U.S.
               Healthcare incentive plans prior to the Effective
               Date shall be governed by Section 1.7 of the Merger
               Agreement); and

                        (iv)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    (d)  Termination by Company for Cause or By
          Executive other than for Good Reason.  If the Executive's
          employment hereunder is terminated by the Company for
          Cause or by the Executive (other than for Good Reason),
          then:

                         (i)  the Company shall pay the Executive,
               as soon as practicable after the Date of
               Termination, any amounts earned, accrued or owing
               the Executive hereunder for services prior to the
               Date of Termination (including accrued deferred
               compensation and unused vacation and personal time);

                        (ii)  the vesting and exercisability of all
               then outstanding equity-based awards shall be
               governed, as applicable, in accordance with Section
               5(d) of this Agreement or the terms of the U.S.
               Healthcare or Aetna, as the case may be, document
               under which they were initially granted (except that
               the vesting of awards granted under the U.S.
               Healthcare incentive plans prior to the Effective
               Date shall be governed by Section 1.7 of the Merger
               Agreement); and

                       (iii)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    (e)  Termination by Company without Cause or by
          the Executive with Good Reason.  If the Executive's
          employment hereunder is terminated by the Company (other
          than for Cause or Disability) or by the Executive for
          Good Reason, then:

                         (i)  the Company shall pay the Executive,
               as soon as practicable after the Date of
               Termination, any amounts earned, accrued or owing
               the Executive hereunder for services prior to the
               Date of Termination (including accrued deferred
               compensation and unused vacation and personal time);

                        (ii)  notwithstanding any provision of any
               annual bonus plan to the contrary, the Company shall
               pay to the Executive, as soon as practicable after
               the Date of Termination, a lump sum amount, in cash,
               equal to the sum of (A) any annual bonus which has
               been allocated or awarded to the Executive for a
               completed fiscal year preceding the Date of
               Termination under any such plan and which, as of the
               Date of Termination, is contingent only upon the
               continued employment of the Executive to a
               subsequent date, and (B) a pro rata portion to the
               Date of Termination of the aggregate value of all
               contingent annual bonus awards to the Executive for
               all then uncompleted fiscal years (other than the
               fiscal year commencing in 1996) under any such plan,
               calculated as to each such award by multiplying the
               award that the Executive would have earned for the
               entire performance award period, assuming the
               achievement, at the target level, of the individual
               and corporate performance goals established with
               respect to such award, by the fraction (the
               "Fraction") obtained by dividing the number of full
               months and any fractional portion of a month during
               such performance award period through the Date of
               Termination by the total number of months contained
               in such performance award period; provided, however,
               that, in the event that the Executive's actual award
               (the "Actual Award") would have exceeded the target
               award had he remained in the employ of the Company
               until the end of any such performance award period,
               then the Company shall pay the Executive, as soon as
               practicable following the end of such period, an
               amount equal to the product of the Fraction and the
               excess of the Actual Award over the target award;
               and

                       (iii)  the Company shall pay to the
               Executive a severance payment in cash, 50% of which
               is payable in a lump sum on the Date of Termination
               and, subject to the Executive's continued compliance
               with the applicable provisions of Section 10 hereof
               (provided that the Executive be given an opportunity
               to cure (if curable) any breach of such Section 10
               in accordance with Section 10(d) hereof), the
               remaining 50% of which is payable in a lump sum on
               the first anniversary of the Date of Termination,
               equal to three times the sum of (A) the higher of
               the Executive's Base Salary as in effect immediately
               prior to the occurrence of the event or circumstance
               upon which the Notice of Termination is based and
               the Executive's annual base salary (including
               amounts deferred and any interest accrued thereon)
               in effect immediately prior to the Merger Date, and
               (B) the then current target annual bonus;

                        (iv)  (A) the exercisability of all then
               outstanding equity-based awards granted under the
               U.S. Healthcare incentive plans prior to the Merger
               Date shall be governed in accordance with the terms
               of such U.S. Healthcare incentive plans, (B) the
               vesting of restricted stock awards granted pursuant
               to Section 5(d) shall be governed in accordance with
               the terms of such Section and (C) all then
               outstanding equity-based awards granted under the
               Parent incentive plans shall continue to vest over
               the one year period following the Date of
               Termination and be exercisable through the 90 day
               period following such one year period;

                         (v)  for the thirty-six (36) month period
               immediately following the Date of Termination, the
               Company shall arrange to provide the Executive with
               life, disability, accident and health insurance
               benefits ("Insurance Benefits") and with pension
               plan benefits substantially similar, and on
               substantially similar terms, to those which the
               Executive is receiving immediately prior to the
               Notice of Termination or the economic equivalent
               thereof, which provision of Insurance Benefits shall
               satisfy all of the conditions necessary to avoid the
               imposition of any tax under section 4980B of the
               Code.  Insurance Benefits otherwise receivable by
               the Executive pursuant to this Section 7(e)(v) shall
               be reduced to the extent comparable benefits are
               actually received by, or made available to, the
               Executive without cost during the thirty-six (36)
               month period following the Executive's termination
               of employment (and any such benefits actually
               received by or made available to the Executive shall
               be reported to the Company by the Executive);

                        (vi)  if the Executive would have become
               entitled to benefits under the Company's
               postretirement health care or life insurance plans,
               as in effect immediately prior to the Effective Date
               (or, if there is a Merger Date, immediately prior to
               the Merger Date) or the Date of Termination
               (whichever is more favorable to the Executive), had
               the Executive's employment terminated on the date
               which is thirty-six (36) months after the Date of
               Termination, the Company shall provide such
               postretirement health care or life insurance
               benefits to the Executive and the Executive's
               dependents commencing on the later of (A) the date
               on which such coverage would have first become
               available (disregarding for these purposes the
               thirty-six (36) month period referred to above) and
               (B) the date on which benefits described in
               subsection (v) of this Section 7(e) shall terminate;
               and

                       (vii)  the Company shall have no additional
               obligations to the Executive under this Agreement
               except to the extent otherwise provided in the
               applicable plans and programs of the Company.

                    8.  Gross-Up for Excise Tax.  (a)  Whether or
          not the Executive becomes entitled to any payments under
          Section 7 hereof, if any payments or benefits received or
          to be received by the Executive (whether pursuant to
          Section 5 hereof or any other provision of this Agreement
          or any other plan, arrangement or agreement with the
          Company or, with respect to his employment by the
          Company, with any other person (such payments or
          benefits, excluding the Gross-Up Payment described
          herein, being hereinafter referred to as the "Total
          Payments") will be subject to any excise tax imposed
          under section 4999 of the Internal Revenue Code of 1986,
          as amended (the "Excise Tax"), the Company shall pay to
          the Executive an additional amount (the "Gross-Up
          Payment") such that the net amount retained by the
          Executive, after deduction of any Excise Tax on the Total
          Payments and any federal, state and local income and
          employment taxes and Excise Tax upon the Gross-Up
          Payment, shall be equal to the Total Payments.

                    (b)  For purposes of determining whether any of
          the Total Payments will be subject to the Excise Tax and
          the amount of such Excise Tax, (i) all of the Total
          Payments shall be treated as "parachute payments" (within
          the meaning of section 280G(b)(2) of the Code) unless, in
          the opinion of Tax Counsel, a reasonable basis exists for
          determining that such payments or benefits (in whole or
          in part) do not constitute parachute payments, including
          by reason of section 280G(b)(4)(A) of the Code, (ii) all
          "excess parachute payments" within the meaning of section
          280G(b)(1) of the Code shall be treated as subject to the
          Excise Tax unless, in the opinion of Tax Counsel, a
          reasonable basis exists for determining that such excess
          parachute payments (in whole or in part) represent
          reasonable compensation for services actually rendered
          (within the meaning of section 280G(b)(4)(B) of the Code)
          in excess of the "base amount" (within the meaning of
          section 280G(b)(3) of the Code) allocable to such
          reasonable compensation, or are otherwise not subject to
          the Excise Tax, and (iii) the value of any noncash
          benefits or any deferred payment or benefit shall be
          determined by the Auditor in accordance with the
          principles of sections 280G(d)(3) and (4) of the Code. 
          For purposes of determining the amount of the Gross-Up
          Payment, the Executive shall be deemed to pay federal
          income tax at the highest marginal rate of federal income
          taxation in the calendar year in which the Gross-Up
          Payment is to be made and state and local income taxes at
          the highest marginal rate of taxation in the state and
          locality of the Executive's residence on the Date of
          Termination (or if there is no Date of Termination, then
          the date on which the Gross-Up Payment is calculated for
          purposes of this Section 8), net of the maximum reduction
          in federal income taxes which could be obtained from
          deduction of such state and local taxes.

                    (c)  In the event that the Excise Tax is
          finally determined to be less than the amount taken into
          account hereunder in calculating the Gross-Up Payment,
          the Executive shall repay to the Company, at the time
          that the amount of such reduction in Excise Tax is
          finally determined, the portion of the Gross-Up Payment
          attributable to such reduction (plus that portion of the
          Gross-Up Payment attributable to the Excise Tax and
          federal, state and local income and employment taxes
          imposed on the Gross-Up Payment being repaid by the
          Executive to the extent that such repayment results in a
          reduction in Excise Tax and/or a federal, state or local
          income or employment tax deduction) plus interest on the
          amount of such repayment at 120% of the rate provided in
          section 1274(b)(2)(B) of the Code.  In the event that the
          Excise Tax is determined to exceed the amount taken into
          account hereunder in calculating the Gross-Up Payment
          (including by reason of any payment the existence or
          amount of which cannot be determined at the time of the
          Gross-Up Payment), the Company shall make an additional
          Gross-Up Payment in respect of such excess (plus any
          interest, penalties or additions payable by the Executive
          with respect to such excess) at the time that the amount
          of such excess is finally determined.  The Executive and
          the Company shall each reasonably cooperate with the
          other in connection with any administrative or judicial
          proceedings concerning the existence or amount of
          liability for Excise Tax with respect to the Total
          Payments.

                    9.  Mitigation.  The Executive shall not be
          required to mitigate amounts payable pursuant to Section
          7 hereof by seeking other employment or otherwise, nor,
          except as provided in Section 7(e)(v), shall there be any
          offset against such payments on account of (a) any
          remuneration attributable to any subsequent employment
          that he may obtain or (b) any claims the Company may have
          against the Executive.

                    10.  Noncompetition and Confidentiality.

                    (a)  Noncompetition.  Prior to, and for a
          period of one year following, termination of the
          Executive's employment during the Term other than by the
          Company without Cause or by the Executive for Good
          Reason, the Executive shall not become associated,
          whether as a principal, partner, employee, consultant or
          shareholder (other than as a holder of not in excess of
          1% of the outstanding voting shares of any publicly
          traded company), with any entity that is actively engaged
          in any geographic area in any business which is in
          substantial and direct competition with the Business;
          provided, however, nothing in this Section 10(a) shall
          preclude the Executive from performing services solely
          and exclusively for a division or subsidiary of such an
          entity that is engaged in a noncompetitive business.

                    (b)  Nondisclosure, Nonsolicitation and
          Cooperation.

                         (i)  the Executive shall not (except to
               the extent required by an order of a court having
               competent jurisdiction or under subpoena from an
               appropriate government agency) disclose to any third
               person, whether during or subsequent to the
               Executive's employment with the Company, any trade
               secrets; customer lists; product development and
               related information; marketing plans and related
               information; sales plans and related information;
               operating policies and manuals; business plans;
               financial records; or other financial, commercial,
               business or technical information related to the
               Company or any subsidiary or affiliate thereof
               unless such information has been previously
               disclosed to the public by the Company or has become
               public knowledge other than by a breach of this
               Agreement; provided, however, that this limitation
               shall not apply to any such disclosure made while
               the Executive is employed by the Company, or any
               subsidiary or affiliate thereof in the ordinary
               course of the performance of the Executive's duties;

                        (ii)  prior to, and for two years
               following, termination of the Executive's employment
               during the Term, the Executive shall not attempt to
               induce any employee or Insurance Agent (as defined
               below) employed by or performing services for the
               Business to be employed or perform services
               elsewhere, provided that this covenant shall not
               preclude the Executive from taking any actions
               during the Term that (x) are intended to benefit the
               Company or any subsidiary or affiliate and (y) do
               not benefit the Executive financially other than as
               an employee or stockholder of the Company;

                       (iii)  prior to, and for two years
               following, termination of the Executive's employment
               during the Term, the Executive shall not attempt to
               induce any insurance agent or agency, insurance
               broker, broker-dealer or supplier of the Business to
               cease providing services to the Business, provided
               that this covenant shall not preclude the Executive
               from taking any actions during the Term that (x) are
               intended to benefit the Company or any subsidiary or
               affiliate and (y) do not benefit the Executive
               financially other than as an employee or stockholder
               of the Company; and

                        (iv)  prior to, and for two years
               following, termination of the Executive's employment
               during the Term, the Executive shall not attempt to
               solicit, on behalf of any person or entity other
               than the Business, the trade of any individual or
               entity which, at the time of the solicitation, is a
               customer of the Business, or which the Business is
               undertaking reasonable steps to procure as a
               customer at the time of or immediately preceding
               termination of the Term; provided, however, that
               this limitation shall only apply to (x) any product
               or service which is in competition with a product or
               service of the Business and (y) with respect to any
               customer with whom the Executive has or had (by
               virtue of the Executive's position or otherwise) a
               personal relationship.

          Solely for purposes of subsection (b)(ii) of this Section
          10, the term "Insurance Agent" shall mean those insurance
          agents or agencies representing the Company or any
          subsidiary or affiliate thereof, that are exclusive or
          career agents or agencies of the Company or any
          subsidiary or affiliate thereof, or any insurance agents
          or agencies which derive 50% or more of their business
          revenue from the Company or any subsidiary or affiliate
          thereof (calculated on an aggregate basis for the 12-
          month period prior to the date of determination or such
          other similar period for which such information is more
          readily available).

                    (c)  Company Property.  Promptly following the
          Executive's termination of the Executive's employment,
          the Executive shall return to the Company all property of
          the Company, and all copies thereof in the Executive's
          possession or under his control.

                    (d)  Intention of the Parties.  If any
          provision of Section 10 is determined by an arbitrator
          (or a court of competent jurisdiction asked to enforce
          the decision of the arbitrator) not to be enforceable in
          the manner set forth in this Agreement, the Company and
          Executive agree that it is the intention of the parties
          that such provision should be enforceable to the maximum
          extent possible under applicable law and that such
          arbitrator (or court) shall reform such provision to make
          it enforceable in accordance with the intent of the
          parties.  Executive acknowledges that a material part of
          the inducement for the Company to provide the salary and
          benefits evidenced hereby is Executive's covenants set
          forth in Section 10(a), (b) and (c) and that the
          covenants and obligations of Executive with respect to
          nondisclosure and nonsolicitation relate to special,
          unique and extraordinary matters and that a violation of
          any of the terms of such covenants and obligations will
          cause the Company irreparable injury for which adequate
          remedies are not available at law.  Therefore, Executive
          agrees that, if Executive shall materially breach any of
          those covenants following termination of employment and
          such breach is not cured (if curable) within ten (10)
          days following receipt of written notification thereof
          that specifies the manner in which the Company believes
          the Executive has breached such covenants, the Company
          shall have no further obligation to pay Executive any
          benefits otherwise payable under Sections 7(e)(iii), (v)
          and (vi) and the Company shall be entitled to an
          injunction, restraining order or such other equitable
          relief (without the requirement to post a bond)
          restraining Executive from committing any violation of
          the covenants and obligations contained in Section 10(a),
          (b) and (c).  The remedies in the preceding sentence are
          cumulative and are in addition to any other rights and
          remedies the Company may have at law or in equity as an
          arbitrator (or court) shall reasonably determine.

                    (e)  Waiver.  Without limiting the generality
          of the foregoing, upon request of the Executive prior to
          engaging in any conduct otherwise prohibited by this
          Section 10, the Company may, in its sole discretion,
          waive in writing, on such terms and conditions as it may
          deem appropriate, any violation of this Section 10 which
          would otherwise occur due to such conduct.

                    11.  Indemnification; Attorneys' Fees.  The
          Company shall indemnify the Executive to the full extent
          authorized by law and the Charter and By-Laws of the
          Company, as applicable, for all expenses, costs,
          liabilities and legal fees which the Executive may incur
          in the discharge or course of his duties hereunder.  The
          Executive shall be insured under the Company's Directors'
          and Officers' Liability Insurance Policy as in effect
          from time to time.  The Executive shall be deemed a third
          party beneficiary with respect to Section 7.6 of the
          Merger Agreement and, as such, shall have the right to
          enforce such provisions as if he were party to the Merger
          Agreement.  In connection with any dispute or proceeding
          arising under this Agreement where the Executive is
          ultimately the substantially prevailing party, the
          Company shall promptly reimburse Executive for all costs,
          including without limitation the reasonable attorneys'
          fees of any attorney of the Executive's choosing,
          incurred by the Executive in any such dispute or
          proceeding arising under this Agreement.  Any termination
          of the Executive's employment or of this Agreement shall
          have no effect on the continuing operation of this
          Section 11.

                    12.  Successors; Binding Agreement.

                    (a)  Company's Successors.  The Company shall
          require any successor (whether direct or indirect, by
          purchase, merger, consolidation or otherwise) to all or
          substantially all of the business and/or assets of the
          Company to expressly assume and agree to perform this
          Agreement in the same manner and to the same extent that
          the Company would be required to perform it if no such
          succession had taken place.  As used in this Agreement,
          "Company" shall mean the Company as hereinbefore defined
          and any successor to its business and/or assets as
          aforesaid which executes and delivers the agreement
          provided for in this Section 12 or which otherwise
          becomes bound by all the terms and provisions of this
          Agreement by operation of law.  This Agreement shall not
          otherwise be assignable by the Company.

                    (b)  Executive's Successors.  This Agreement
          shall not be assignable by the Executive.  This Agreement
          and all rights of the Executive hereunder shall inure to
          the benefit of and be enforceable by the Executive's
          personal or legal representatives, executors,
          administrators, successors, heirs, distributees, devisees
          and legatees.  Upon the Executive's death, all amounts to
          which he is entitled hereunder, unless otherwise provided
          herein, shall be paid in accordance with the terms of
          this Agreement to the Executive's devisee, legatee, or
          other designee or, if there be no such designee, to the
          Executive's estate.

                    13.  Notices.  For the purpose of this
          Agreement, notices and all other communications provided
          for in the Agreement shall be in writing and shall be
          deemed to have been duly given when delivered or received
          by facsimile or three (3) days after mailing by United
          States certified mail, return receipt requested, postage
          prepaid, addressed, if to the Executive, to the address
          inserted below the Executive's signature on the final
          page hereof and, if to the Company, to the attention of
          the General Counsel except where this Agreement provides
          otherwise.  Notice of change of address or addressee
          shall be effective only upon actual receipt.

                    14.  Disputes.  This Agreement shall be
          construed in accordance with and governed by the law of
          the Commonwealth of Pennsylvania (without regard to
          principles of conflict of laws).  All claims and
          controversies related to or stemming from this Agreement
          or the Executive's employment with the Company, except
          actions for equitable relief pending an arbitration
          award, shall be submitted to binding arbitration in Blue
          Bell, Pennsylvania by a panel of three neutral
          arbitrators under the Commercial Arbitration Rules of the
          American Arbitration Association.  Judgment upon an award
          of the arbitrators may be entered and enforced in any
          court having jurisdiction.

                    15.  Miscellaneous.  No provision of this
          Agreement may be modified, waived or discharged unless
          such waiver, modification or discharge is agreed to in
          writing and signed by the Executive and such officer as
          may be specifically designated by the Board.  No waiver
          by either party hereto at any time of any breach by the
          other party hereto of, or of any lack of compliance with,
          any condition or provision of this Agreement to be
          performed by such other party shall be deemed a waiver of
          similar or dissimilar provisions or conditions at the
          same or at any prior or subsequent time.  All references
          to sections of the Exchange Act or the Code shall be
          deemed also to refer to any successor provisions to such
          sections.  Subject to the provisions of Section 5(j) and
          8 hereof, payments provided for hereunder shall be paid
          net of any applicable withholding required under federal,
          state or local law and any additional withholding to
          which the Executive has agreed.  The obligations of the
          Company and the Executive under this Agreement which by
          their nature may require either partial or total
          performance after the expiration of the Term shall
          survive such expiration.  The invalidity or
          unenforceability of any provision of this Agreement shall
          not affect the validity or enforceability of any other
          provision of this Agreement, which shall remain in full
          force and effect.

                    16.  Counterparts.  This Agreement may be
          executed in one or more counterparts, each of which shall
          be deemed to be an original but all of which together
          will constitute one and the same instrument.

                    17.  Entire Agreement.  This Agreement between
          the Company and the Executive sets forth the entire
          agreement of the parties hereto in respect of the subject
          matter contained herein and supersedes, as of the
          Effective Date, all prior agreements, promises,
          covenants, arrangements, communications, representations
          or warranties, whether oral or written, by the parties
          hereto in respect of the subject matter contained herein;
          and any prior agreement of the parties hereto in respect
          of the subject matter contained herein shall be
          terminated and canceled as of the Effective Date.


                    IN WITNESS WHEREOF, the parties hereto have
          executed this Agreement on March 30, 1996 to be effective
          as of the Effective Date.

                                   U.S. Healthcare

                                   By:_______________________
                                      Name:
                                      Title:

                                   __________________________
                                   Timothy Nolan

                                   __________________________
                                   __________________________
                                   __________________________
                                   Address of Executive

           







[AETNA LOGO]                NEWS RELEASE             [U.S. HEALTHCARE LOGO]

          FOR IMMEDIATE RELEASE

          CONTACTS:
     Media:           Investors:       Media:          Investors:
     Joyce Oberdorf   Daniel Messina   Jill Griffiths  James Dickerson,  Jr.
     Aetna            Aetna            U.S. Healthcare U.S. Healthcare
     (860) 273-7392   (860) 273-6184   (215) 283-6890  (215) 283-3091

                  AETNA AND U.S. HEALTHCARE AGREE TO MERGER

                _____________________________________________

                     $8.9 BILLION TRANSACTION WILL CREATE
                NATION'S LEADING HEALTH CARE BENEFITS COMPANY

                         ___________________________

               HARTFORD, CT. AND BLUE BELL, PA., APRIL 1, 1996 --
          Aetna (NYSE: AET) and U.S. Healthcare (NASDAQ: USHC), two
          of the nation's leading health care companies, today
          announced that they agreed to merge in a transaction
          valued at $8.9 billion.  The combined enterprise will
          have a unique ability to provide high quality health care
          services at a reasonable cost on a national scale,
          meeting the needs of consumers and employers large and
          small, and generating significant growth opportunities.

               Together, the two companies provide health care
          services to 23 million people, or one in every 12
          Americans, and will be the leading provider of managed
          health care services with 10.3 million managed care
          members.  The combined company will offer a full spectrum
          of products, including behavioral health, vision care,
          dental, APM (pharmacy), and group life and disability
          insurance.

               The merger agreement, which has been approved by the
          board of directors of each company, calls for the
          formation of a new holding company, Aetna Inc., domiciled
          in Connecticut.  U.S. Healthcare shareholders will
          receive $34.20 in cash, 0.2246 shares of Aetna Inc.
          common stock, and 0.0749 shares of Aetna Inc. mandatorily
          convertible preferred stock for each share of U.S.
          Healthcare.  At the March 29 closing price of $75.50 for
          Aetna, that represents a value of approximately $57 for
          each U.S. Healthcare share, a 24 percent premium over
          Friday's U.S. Healthcare closing price of $45.88.  Each
          share of Aetna stock will become a share of Aetna Inc.
          stock.  The combined company will be 78 percent owned by
          Aetna shareholders and 22 percent owned by U.S.
          Healthcare shareholders.

               The merger will be financed with a combination of
          $5.3 billion in cash, the issuance of $2.7 billion of new
          Aetna Inc. common stock, and $0.9 billion in preferred
          securities.

               The Aetna and U.S. Healthcare health businesses will
          be in wholly owned subsidiaries of Aetna Inc., with each
          subsidiary maintaining its current name.  Aetna Chairman
          Ronald E. Compton will be chairman and CEO of the new
          company.  U.S. Healthcare Chairman Leonard Abramson will
          join Aetna's board of directors and will serve as a
          strategic consultant to Compton.  Two additional
          directors nominated by Abramson also will be named to the
          Aetna Inc. board.

               The agreement is subject to approval by the
          shareholders of both companies and federal and state
          regulators, the close of the previously announced sale of
          Aetna's property/casualty unit to Travelers Group, and
          other customary conditions.  It is expected to close in
          the third quarter of 1996.  Abramson, who is the
          controlling shareholder of U.S. Healthcare, has agreed to
          vote in favor of the merger.

               Compton said, "This merger is a major step in our
          strategic plan to create an outstanding national health
          care company which meets customers' needs for high
          quality health care services at a reasonable cost.  It is
          an excellent strategic fit, and establishes a strong
          platform for growth, product innovation, superior
          financial performance and excellent long-term value for
          shareholders.

               "Aetna is already one of the leading national health
          care companies, with a strong national brand name and a
          wide variety of health care products, serving a large
          number of Fortune 1000 companies.  U.S. Healthcare is
          widely recognized as the best-managed HMO company, with
          high customer satisfaction and acknowledged strengths in
          medical quality and cost management, retail marketing and
          information systems.  Combining these strengths, the new
          enterprise will be positioned to grow rapidly by offering
          customers a wide variety of products and services on a
          national scale," Compton said.

               Abramson said, "As a leading provider of premier
          quality health care services, U.S. Healthcare has
          achieved an enviable level of customer satisfaction.  We
          are successfully expanding our membership in key
          geographic markets.  By merging our premier managed care
          capabilities with Aetna's ability to manage large, multi-
          site plan sponsors with complex servicing needs, we can
          create this country's leading national health care
          company.

               "Our focus will continue to be on the health of our
          members.  We intend to set the standard against which all
          health care companies will be measured in terms of
          quality of health care delivered, the choice of health
          care plans and providers, and service to members.  We
          will maintain our leadership position in providing
          customers with the health information and health care
          services they need to live healthier and more fulfilling
          lives," Abramson said.

               The new company expects to realize from synergies an
          additional $300 million after taxes from the combined
          health businesses within 18 months, including enhanced
          revenues through additional HMO membership and cross-
          selling opportunities with specialty health and group
          life, plus reductions in medical and operating expenses.

               "We expect to be able to deliver substantial growth
          in earnings beyond 1997 when the effects of the synergies
          kick in," Compton said.

               Consistent with its enhanced focus on growth,
          Aetna's board of directors intends to change the dividend
          policy to maintain a payout of 10 to 20 percent of
          operating earnings before goodwill amortization, upon
          completion of the transaction.

               When the merger is complete, the combined health
          operations will be managed as one organization, with a
          management team drawn from both companies.  Michael J.
          Cardillo and Joseph T. Sebastianelli, currently co-
          presidents of U.S. Healthcare, will be co-presidents of
          the combined health business, reporting to Compton.  They
          will maintain offices in both Blue Bell, PA and
          Middletown, CT.

               James Dickerson, currently chief financial officer
          of U.S. Healthcare, will become chief financial officer
          of the combined health business, reporting to the co-
          presidents.  Other key management appointments for the
          combined health care business include:

               From Aetna:  Frolly M. Boyd, group life; A. Bruce
          Campbell, Healthways; Allen P. Maltz, chief actuary;
          Thomas J. McInerney, national accounts; Daniel S.
          Messina, deputy CFO; Scott A. Striegel, operations; John
          W. Trustman, information technology, and Thomas R.
          Williams, specialty health.

               From U.S. Healthcare:  Arthur N. Leibowitz, M.D.,
          chief medical officer; Timothy E. Nolan, sales; David F.
          Simon, general counsel, and Richard A. Wolfson, pharmacy.

               "The combined health business will be led by the
          strongest management team in the industry today,
          representing the best of both organizations and
          possessing the skills and experience to successfully
          drive our business into the future," Compton said.

               James W. McLane, CEO of Aetna Health Plans,
          announced that he plans to leave the Company soon, but
          will work with the integration team to help ensure a
          smooth transition, reporting to Compton.

               Compton said, "I'm grateful to Jamie McLane for his
          efforts over the last five years in building AHP into one
          of the country's leading health care companies, with the
          significant position it enjoys today.  He is a strong
          proponent of the decision to merge our health business
          with U.S. Healthcare, and he will be instrumental in
          helping to achieve a rapid and effective integration
          process."

               A team consisting of Cardillo, Aetna Vice Chairman
          Richard L. Huber, McInerney and Sebastianelli will plan
          for integration of the two companies' systems and
          workforces upon close of the transaction.  The combined
          company will remain committed to its two home regions,
          Connecticut and Pennsylvania.  Both regions will play an
          important role in the company's future.

               "As we merge these two businesses, the integration
          team will work to streamline operations," Compton said. 
          "We will be sensitive to the interests of our employees
          and the communities where we live and work.  We will rely
          as much as possible on attrition, but some positions may
          be affected.  We will give qualified employees
          preference for new jobs that are created as our business
          grows."

               Combined Aetna/U.S. Healthcare health membership is
          14.1 million members comprised of 10.3 million managed
          care members and 3.8 million indemnity members.

               Aetna is one of the country's largest insurance and
          financial services organizations, centered around three
          core businesses:  Aetna Health Plans, Aetna Retirement
          Services and Aetna International.  Aetna Health Plans is
          the country's third-largest health care company, reaching
          more than 20 million Americans.  Aetna Retirement
          Services markets a variety of retirement, investment and
          life insurance products to individuals, businesses and
          not-for-profit institutions, serving 1.5 million
          customers directly and through nearly 20,000 plan
          sponsors.  Aetna International offers a variety of life
          insurance and financial services products and has more
          than 8.5 million customers in 10 countries.

               U.S. Healthcare provides managed health care
          services through its HMOs in Pennsylvania, New Jersey,
          New York, Delaware, Connecticut, Massachusetts, New
          Hampshire, Maryland, Georgia, Virginia, Rhode Island, the
          District of Columbia, North Carolina and South Carolina. 
          The Company also provides a variety of other managed
          health care services to self-insured and other employers,
          including workers compensation managed care, coordination
          and administration of multiple health plans for multi-
          state employers and quality measurement and improvement
          programs and data analysis systems for providers and
          purchasers of health care.

                                     ###

          Shareholders of Aetna and U.S. Healthcare will be asked
          to approve the merger agreement and exchange of shares
          pursuant to a proxy statement/prospectus forming part of
          a registration statement to be filed with the Securities
          and Exchange Commission (the "SEC").  This press release
          does not constitute an offer or solicitation of an offer
          for securities or the solicitation of any approval by
          shareholders of U.S. Healthcare or Aetna.  For additional
          information regarding factors that may materially affect
          the acquisition, including estimated earnings, cost
          savings and improvements and revenue enhancements, please
          see Aetna's Form 8-K filed with the SEC today.

          Additional information about the companies is available
          on the following Internet address:  www.aetna.com and
          www.ushc.com



© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission