GREENWICH AIR SERVICES INC
8-K, 1997-02-21
MISCELLANEOUS REPAIR SERVICES
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<PAGE>

                       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




      Date of Report (Date of earliest event reported): February 13, 1997
                                                        ------------------


                          Greenwich Air Services, Inc.
- --------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)





          Delaware                        0-22706               58-1758941
- ----------------------------           -----------          ----------------
(State or other jurisdiction           (Commission          (I.R.S. Employer
     of incorporation)                 File Number)         Identification No.)



P.O. Box 522187, Miami, Florida                                      33152
4590 NW 36th Street, Miami, Florida                                  33122
- -----------------------------------                                  -----
(Address of principal executive offices)                          (Zip Code)


Registrant's telephone number, including area code:  (305) 526-7000
                                                     --------------



- --------------------------------------------------------------------------------
          (Former Name or Former Address, if Changed Since Last Report)


<PAGE>



                           CURRENT REPORT ON FORM 8-K

                          GREENWICH AIR SERVICES, INC.

                                February 13, 1997


Item 5.  Other Events.

Agreement and Plan of Reorganization with UNC Incorporated.

         On February 13, 1997, Greenwich Air Services, Inc., a Delaware
corporation (the "Company"), UNC Incorporated, a Delaware corporation ("UNC"),
and Condor Acquisition Corporation, a Delaware corporation and wholly-owned
subsidiary of the Company ("Condor"), entered into an Agreement and Plan of
Reorganization of the same date (the "Agreement"), pursuant to which the parties
have agreed that UNC will become a wholly-owned subsidiary of the Company by
merger of UNC with and into Condor (the "UNC Merger"). The Agreement provides,
among other things, that as a result of the UNC Merger, each UNC Common Stock
Equivalent (as defined in the Agreement) shall be valued at not less than
$14.00, and each holder of UNC Common Stock Equivalents shall be entitled to
receive on the Effective Time (as defined in the Agreement) that number of
shares of Class B nonvoting common stock, par value $.01 per share, of the
Company (the "Greenwich Class B Stock") as shall be determined by multiplying
(i) the number of UNC Common Stock Equivalents held by such holder by (ii) the
Exchange Ratio.

         As defined in the Agreement, the Exchange Ratio shall mean the fraction
(expressed as a decimal to the nearest ten thousandth) determined as follows:

         (a) if the "Closing Date Market Value" (defined in the Agreement as the
mean average of the closing prices of a share of Greenwich Class B Stock, as
reported on The Nasdaq National Market for the twenty trading days ending on the
trading date immediately prior to the Closing Date (as defined in the
Agreement)) is less than or equal to $24.86, the Exchange Ratio shall be the (x)
the Base UNC Equity Value Per Share, divided by (y) the Closing Date Market
Value (with the "Base UNC Equity Value Per Share" defined in the Agreement as
(A) the product obtained by multiplying $14.00 by the number of outstanding UNC
Common Stock Equivalents, divided by (2) the aggregate number of UNC Common
Stock Equivalents outstanding on the Closing Date); or

         (b) if the Closing Date Market Value exceeds $24.86, but is less than
or equal to $28.59, the Exchange Ratio shall be 0.5632; or

         (c) if the Closing Date Market Value exceeds $28.59, then the Exchange
Ratio shall be (x) 115% of the Base UNC Equity Value Per Share divided by (y)
the Closing Date Market Value.

                                        2

<PAGE>




The Exchange Ratio is subject to adjustment upon the occurrence of certain
events set forth in the Agreement.

         The Company has agreed to pay the Merger Consideration (as defined in
the Agreement) to the holders of UNC Common Stock Equivalents solely in shares
of Greenwich Class B Stock. However, subject to the limitations and conditions
set forth in the Agreement, such holders may, pursuant to the procedures set
forth in the Agreement, elect prior to the Closing Date to receive all or any
portion of their Merger Consideration in cash; provided, that in no event shall
the Company be obligated to pay in cash an aggregate amount which shall be in
excess of fifty (50%) percent of the aggregate Merger Consideration payable to
all holders of UNC Common Stock Equivalents (computed at $14.00 per share).

         The Merger Consideration, as well as the other terms and conditions of
the Agreement, were determined as a result of arm's-length negotiations among
representatives of the parties to the Agreement. Consummation of the
transactions contemplated by the Agreement are subject to a number of
conditions, including the approval of the stockholders of each of the Company
and UNC entitled to vote thereon, and certain contemplated debt and equity
financings for the Company.

         The information set forth above is qualified in its entirety by
reference to (i) the Agreement, a copy of which is attached hereto as Exhibit 1
and (ii) the joint press release issued by the Company and UNC on February 14,
1997, a copy of which is attached hereto as Exhibit 2.


Item 7.  Financial Statements, Pro Forma Financial Information and Exhibits.

         (a)  Financial Statements of Businesses Acquired.

              Not applicable.

         (b)  Pro Forma Financial Information.

              Not applicable.

         (c)  Exhibits.

              1.   Agreement and Plan of Reorganization, dated February 13,
                   1997, by and among the Company, UNC and Condor.

              2.   Joint Press Release issued by the Company and UNC on
                   February 14, 1997.



                                        3

<PAGE>



                                   SIGNATURES


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


                                    GREENWICH AIR SERVICES, INC.


Date: February 19, 1997             By: /s/ Robert J. Vanaria
                                       --------------------------
                                        Robert J. Vanaria
                                        Senior Vice President
                                        of Administration and
                                        Chief Financial Officer




                                        4

<PAGE>


                                  EXHIBIT INDEX


Exhibit Number    Description
- --------------    -----------

     1            Agreement and Plan of Reorganization, dated February 13, 1997,
                  by and among the Company, UNC and Condor.

     2            Joint Press Release issued by the Company and UNC on 
                  February 14, 1997.




<PAGE>



                      AGREEMENT AND PLAN OF REORGANIZATION

                                 BY AND BETWEEN

                          GREENWICH AIR SERVICES, INC.

                                       AND

                                UNC INCORPORATED




                          -----------------------------

                          Dated as of February 13, 1997

                          -----------------------------




<PAGE>





                                TABLE OF CONTENTS

                                                                         PAGE
                                                                         ----


ARTICLE I


ARTICLE II
    Section 2.1. The Merger   ..............................................5
    Section 2.2. Exchange of Certificates...................................6


ARTICLE III
    Section 3.1. Shareholder Approval.......................................7
    Section 3.2. Time and Place of Closing..................................8


ARTICLE IV
    Section 4.1. Organization and Authority of the Greenwich Companies......8
    Section 4.2. Capitalization.............................................8
    Section 4.3.Authority Relative to this Agreement........................9
    Section 4.4. Consents and Approvals; No Violations......................9
    Section 4.5. Reports      .............................................10
    Section 4.6. Absence of Certain Events.................................10
    Section 4.7. Joint Proxy Statement/Prospectus..........................11
    Section 4.8. Litigation   .............................................11
    Section 4.9. Employee Benefit Plans....................................11
    Section 4.10. Tax Matters .............................................12
    Section 4.11. Compliance with Law......................................12
    Section 4.12. Fees and Expenses of Brokers and Others..................13
    Section 4.13. Accuracy of Information..................................13
    Section 4.14. Absence of Undisclosed Liabilities.......................13
    Section 4.15. Opinion of Financial Advisor.............................13


ARTICLE V
    Section 5.1. Organization and Authority of the UNC Companies...........13
    Section 5.2. Capitalization............................................14
    Section 5.3. Authority Relative to this Agreement......................14
    Section 5.4. Consents and Approvals; No Violations.....................14
    Section 5.5. Reports      .............................................15
    Section 5.6. Absence of Certain Events.................................16
    Section 5.7. Joint Proxy Statement/Prospectus..........................16
    Section 5.8. Litigation   .............................................16
    Section 5.9. Title to and Sufficiency of Assets........................17
    Section 5.10. Contracts   .............................................17
    Section 5.11. Labor Matters............................................17
    Section 5.12. Employee Benefit Plans...................................18
    Section 5.13. Tax Matters .............................................19




<PAGE>



    Section 5.14. Compliance with Law.....................................20
    Section 5.15. Transactions With Affiliates............................20
    Section 5.16. Fees and Expenses of Brokers and Others.................20
    Section 5.17. Accuracy of Information.................................21
    Section 5.18. Absence of Undisclosed Liabilities......................21
    Section 5.19. Opinion of Financial Advisor............................21


ARTICLE VI
    Section 6.1. Conduct of the Businesses of Greenwich and UNC...........21
    Section 6.2. No Solicitation..........................................24
    Section 6.3. The Registration Statement; Listing......................24
    Section 6.4. Access to Information; Confidentiality Agreement.........25
    Section 6.5. Best Efforts ............................................25
    Section 6.6. Consents     ............................................26
    Section 6.7. Public Announcements.....................................26
    Section 6.8. Certain Agreements.......................................26
    Section 6.9. Affiliates   ............................................26
    Section 6.10. Stock Options...........................................26
    Section 6.11. Letter of UNC's Accountants.............................27
    Section 6.12. Letter of Greenwich's Accountants.......................27
    Section 6.13. Opinions of Financial Advisors..........................27
    Section 6.14. Registration Rights.....................................27
    Section 6.15.Indemnification; Insurance...............................31


ARTICLE VII
    Section 7.1.Conditions Precedent to Each Party's Obligation to 
                Effect the Merger.........................................32
    Section 7.2.Conditions Precedent to Obligations of UNC................33
    Section 7.3.Conditions Precedent to Obligations of Greenwich..........33


ARTICLE VIII
    Section 8.1.Termination   ............................................34
    Section 8.2.Effect of Termination.....................................35
    Section 8.3.Termination Fee...........................................35
    Section 8.4.Amendment     ............................................36
    Section 8.5.Extension; Waiver.........................................36


ARTICLE IX
    Section 9.1.Survival of Representations and Warranties................36
    Section 9.2.Brokerage Fees and Commissions............................36
    Section 9.3.Entire Agreement; Assignment..............................36
    Section 9.4.Notices       ............................................37
    Section 9.5.Governing Law ............................................37
    Section 9.6.Descriptive Headings......................................37
    Section 9.7.Parties in Interest.......................................38
    Section 9.8.Counterparts  ............................................38
    Section 9.9.Specific Performance......................................38
    Section 9.10.Fees and Expenses........................................38
    Section 9.11.Severability ............................................38




<PAGE>







                                    SCHEDULES

Schedule 1.18         Knowledge of Greenwich
Schedule 1.19         Knowledge of UNC
Schedule 1.26A        Partnerships of Greenwich
Schedule 1.26B        Partnerships of UNC
Schedule 1.28         Plan of Merger
Schedule 1.38A        Subsidiaries of Greenwich
Schedule 1.38B        Subsidiaries of UNC
Schedule 3.1A         Certain Shareholders of UNC
Schedule 3.1B         Form of UNC Shareholder Letter
Schedule 4.2          Greenwich Options, Warrants, Subscriptions or Other Rights
Schedule 4.4          Greenwich Required Consents
Schedule 4.10         Tax Matters Concerning Greenwich
Schedule 5.2          UNC Outstanding Options, Warrants,  Subscriptions or Other
                      Rights
Schedule 5.4          UNC Required Consents
Schedule 5.6          Adverse Changes Affecting UNC
Schedule 5.8          UNC Litigation
Schedule 5.9          Certain Permitted Liens
Schedule 5.11         UNC Labor Matters
Schedule 5.12         UNC Benefit Plans
Schedule 5.13         Tax Matters Concerning UNC
Schedule 5.15         Transactions With Affiliates by UNC
Schedule 6.8A         Certain Agreements to be Terminated Prior to Closing
Schedule 6.8B         Amendments to Certain Leases to be Effected Before Closing
Schedule 6.9          Form of UNC Affiliate Letter
Schedule 6.14         Certain UNC Shareholders







<PAGE>




                      AGREEMENT AND PLAN OF REORGANIZATION

                  THIS AGREEMENT AND PLAN OF REORGANIZATION , entered into and
executed this 13th day of February 1997 (the "Agreement Date"), by and between
GREENWICH AIR SERVICES, INC., a Delaware corporation ("Greenwich"), and UNC
INCORPORATED, a Delaware corporation ("UNC").

                                    RECITALS

                  A. The respective Boards of Directors of Greenwich and UNC
have determined that it is in the best interests of their respective
shareholders that the businesses and operations of Greenwich and UNC be
combined; and

                  B. The parties have determined that the most practical manner
to give effect to such combination is through the merger (the "Merger") of UNC
with and into Condor Acquisition Corporation, a Delaware corporation and
wholly-owned subsidiary of Greenwich ("Merger Subsidiary"), with Merger
Subsidiary to be the surviving corporation of such Merger; and

                  C. The parties have mutually agreed that each UNC Common Stock
Equivalent (as hereinafter defined) shall be valued at not less than $14.00 and
shall be converted into shares of Greenwich Class B Stock (as hereinafter
defined), subject to the right of such holder of UNC Common Stock Equivalents to
receive a portion of the merger consideration in cash, as hereinafter described;
and

                  D. For federal income tax purposes, it is intended that the
transactions contemplated by this Agreement shall constitute a reorganization
within the meaning of section 368 of the Internal Revenue Code of 1986, as
amended, and the regulations thereunder.

                  NOW, THEREFORE, in consideration of the premises and of the
mutual representations, warranties, covenants, agreements and conditions set
forth herein and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereby agree as
follows:


                                    ARTICLE I
                                   DEFINITIONS

                  In addition to the other terms defined in this Agreement, as
used herein, the following terms shall have the meanings set forth below:

                  Section 1.1. "Agreement" shall mean this Agreement and Plan of
Reorganization (including the Recitals hereto), together with the Certificate of
Merger and other Exhibits and Schedules attached hereto, as amended from time to
time in accordance with the terms hereof.


<PAGE>



                  Section 1.2. "Affiliate" of any specified Person shall mean
any other Person directly or indirectly controlling or controlled by or under
common control with such specified Person. For purposes of this definition,
"control" (including with correlative meanings, the terms "controlling,"
"controlled by" and "under common control with"), as used with respect to any
Person, shall mean the possession, directly or indirectly, of the power to
direct or cause the direction of the management policies of such Person, whether
through the ownership of voting securities, by agreement or otherwise.

                  Section 1.3 "Affiliated Group" shall mean an affiliated group
as defined in Section 1504 of the Code (or any analogous combined, consolidated
or unitary group defined under any domestic or foreign Tax law) of which any of
UNC and UNC Subsidiaries or Greenwich and Greenwich Subsidiaries are members.

                  Section 1.4. "Agreement Date Market Value" shall mean
$23.1281, being the average of the closing prices of a share of Greenwich Class
B Stock, as reported on Nasdaq for the twenty (20) consecutive trading days
ending on the trading date immediately prior to the Agreement Date.

                  Section 1.5 "AlliedSignal Agreements" shall mean the
collective reference to the following agreements, as amended from time to time:
(a) the Asset and Stock Purchase Agreement, dated May 26, 1994 between LDC
Aviation Services, Inc. ("Garrett") and AlliedSignal Corporation
("AlliedSignal"); (b) the agreement dated April 25, 1996 between UNC and
AlliedSignal, which expires on December 31, 1997 and authorizes UNC to perform
repairs on certain AlliedSignal parts and components; and (c) the operating
agreement dated June 24, 1994 between Garrett and AlliedSignal expiring June 30,
2009; copies of all of which AlliedSignal Agreements have been furnished to
Greenwich.

                  Section 1.6 "Audited 1996 UNC Financial Statements" shall mean
the audited consolidated balance sheet as at December 31, 1996 of the UNC
Companies, together with the related audited consolidated statement of income,
statement of cash flows and statement of stockholders' equity, and with all
applicable notes and schedules, all of which, when issued will have been audited
by the UNC Auditors, in accordance with GAAP and Regulation S-X, as promulgated
under the Securities Act.

                  Section 1.7 "Base UNC Equity Value" shall mean the product
obtained by multiplying (a) $14.00 by (b) the number of UNC Common Stock
Equivalents.

                  Section 1.8. "Certificates" has the meaning given in Section
2.6.

                  Section 1.9. "Closing" shall mean the conference held pursuant
to Section 10.1, and "Closing Date" shall mean the date on which the Closing
occurs.

                  Section 1.10. "Closing Date Market Value" shall mean the
average of the closing prices of a share of Greenwich Class B Stock, as reported
on Nasdaq for the twenty trading days ending on the trading date immediately
prior to the Closing Date.


                                        2


<PAGE>



                  Section 1.11. "Code" shall mean, as appropriate, the Internal
Revenue Code of 1954 or of 1986, each as amended.

                  Section 1.12. "Confidentiality Agreement" shall mean the
Confidentiality Agreement dated November 8, 1996 between UNC and Greenwich.

                  Section 1.13. "Constituent Corporations" shall mean UNC and
the Merger Subsidiary, which shall be the parties to the Merger.

                  Section 1.14. "Contract" shall mean any contract, agreement,
lease, license, arrangement, understanding, relationship or commitment, written
or oral.

                  Section 1.15. "DGCL" shall mean the Delaware General
Corporation Law, as amended.

                  Section 1.16. "J.P. Morgan" shall mean J.P. Morgan Securities
Inc., financial advisors to UNC.

                  Section 1.17. "Effective Time" has the meaning given in
Section 3.1.

                  Section 1.18. "Employee Plan Event" shall mean: (a) with
respect to any Employee Plan relating to the operations of any of the UNC
Companies, any of the events described in clauses (i) through (xi) below, in
each case, as of the date hereof and as of the Closing Date, as applicable:

                  (i) a "reportable event" (within the meaning of Section 4043
         of ERISA) for which the requirement of notice within 30 days to the
         PBGC is not waived or which is described in 29 C.F.R. Section 2615.12
         or 2615.15;

                  (ii) the failure to meet the minimum funding standard of
         Section 412 of the Code (whether or not waived in accordance with
         Section 412(d) of the Code) or the failure to make by its due date a
         required installment under Section 412(m) of the Code;

                  (iii) the provision by the administrator of any plan pursuant
         to Section 4041(a)(2) of ERISA of a notice of intent to terminate such
         plan in a distress termination described in Section 401(c) of ERISA;

                  (iv) the withdrawal from any plan during a plan year by a
         "substantial employer" as defined in Section 4001(a)(2) of ERISA
         resulting in liability pursuant to Section 4062(e) or Section 4063 of
         ERISA;

                  (v) the institution by the PBGC of proceedings to terminate
         any plan, or the occurrence of any event or condition which might
         constitute grounds under ERISA for the termination or the appointment
         of a trustee to administer, any plan;


                                        3


<PAGE>



                  (vi) the imposition of liability pursuant to Section 4064 or
         4069 of ERISA or by reason of the application of Section 4212(c) of
         ERISA;

                  (vii) the complete or partial withdrawal (within the meaning
         of Sections 4203 and 4205 of ERISA) from any multiemployer plan if
         there is any potential liability therefor, or the receipt of notice
         from any multiemployer plan that it is in reorganization or insolvency
         pursuant to Sections 4241 or 4245 of ERISA, or that it intends to
         terminate or has terminated under Sections 4041A or 4042 of ERISA;

                  (viii) the occurrence of an act or omission which could give
         rise to the imposition of fines, penalties, taxes or related charges
         under Chapter 43 of the Code or under Section 409, 502(c), 504(1) or
         4071 of ERISA in respect of any plan;

                  (ix) the assertion of a material claim (other than routine
         claims for benefits) against any plan other than a multiemployer plan
         or the assets of any plan, or against the plan sponsor in connection
         with any such plan;

                  (x) receipt from the IRS of notice of the failure of any
         Qualified Plan to qualify under Section 401(a) of the Code, or the
         failure of any trust forming part of any Qualified Plan to qualify for
         exemption from taxation under Section 501(a) of the Code;

                  (xi) the imposition of a lien on any assets of the person
         maintaining or contributing to any plan pursuant to Sections 401(a)(29)
         or 412(n) of the Code or pursuant to ERISA;

                  Section 1.19. "Employee Plan" shall mean, as of the date
hereof and as of the Closing Date, as applicable, any plan, contract,
commitment, program, policy, arrangement, understanding or practice providing
benefits to any employee, former employee, director or agent of any of the UNC
Companies (whether or not the Person maintains, contributes to, or is bound by
any such plan, contract, commitment, program, policy, arrangement, understanding
or practice, or under which any of the UNC Companies contributes, has
contributed or has any obligation to contribute), including, without limitation
(i) any "employee benefit plan" (within the meaning of Section 3(3) of ERISA),
(ii) any profit-sharing, deferred compensation, bonus, stock option, stock
purchase, pension, retainer, consulting, retirement, severance, welfare or
incentive plan, contract, commitment, program, policy, arrangement,
understanding or practice, (iii) any plan, contract, commitment, program,
policy, arrangement, understanding or practice providing for "fringe benefits"
or perquisites, including, without limitation, benefits relating to automobiles,
clubs, vacation, child care, parenting, sabbatical or sick leave and medical,
dental, hospitalization, life insurance and other types of insurance, (iv) any
Pension Plan, and (v) any Multiemployer Plan.

                  Section 1.20. "Environmental Assessment" shall mean any one or
more reviews, studies and/or reports by an independent environmental consultant,
which may include, without limitation, one or more Phase I and/or Phase II
studies, updates thereof,


                                        4


<PAGE>



compliance audits, health and safety audits, and related testing for hazardous
substances, toxic substances, hazardous wastes and/or toxic pollutants (as
defined under Environmental Laws), for the purpose of determining whether any of
the UNC Companies is in compliance with Environmental Laws, and/or whether there
exists any condition or circumstance which authorizes or may require any
corrective action, cleanup, removal or other remedial action under Environmental
Laws on the part of any of the UNC Companies or any Real Estate owned or leased
by any of the UNC Companies.

                  Section 1.21. "Environmental Laws" shall mean and include all
federal, state and local laws, statutes, regulations, permits, orders,
ordinances, codes, rules and other governmental restrictions, requirements and
duties, including common law, relating to the treatment, storage, disposal or
release of air pollutants, water pollutants or processed waste water or
otherwise relating to human health, the environment or hazardous substances,
including but not limited to the Federal Solid Waste Disposal Act; the Federal
Clean Air Act (including, without limitation, the Clean Air Act Amendments of
1990); the Federal Water Pollution Control Act; the Hazardous Materials
Transportation Act; the Federal Toxic Substances Control Act; the Federal
Resource Conservation and Recovery Act of 1976; the National Environmental
Policy Act; the Federal Comprehensive Environmental Response, Compensation and
Liability Act of 1980 ("CERCLA") and similar state laws, all amendments to any
of the foregoing statutes, and all regulations promulgated by any federal or
state agencies, including the Environmental Protection Agency, regulations of
the Nuclear Regulatory Agency, and regulations of any state department of
natural resources or state environmental protection agency now or at any time
hereinafter in effect.

                  The terms "hazardous substances", "release", "respond",
"response", and all variations and derivatives thereof shall mean and include,
without limitation, all radioactive materials, asbestos and asbestos-containing
materials, PCBs, petroleum products and by-products, all solid, semi-solid,
liquid or gaseous substances which are toxic, ignitable, corrosive, carcinogenic
or otherwise dangerous to human, plant or animal health, and all substances
defined or listed as "hazardous substances", "toxic substances", "hazardous
waste", "toxic pollutants" in, or otherwise regulated under any Environmental
Law, including, without limitation, the meanings ascribed to them in CERCLA.

                  Section 1.22. "ERISA" shall mean the Employee Retirement
Income Security Act of 1974, as amended.

                  Section 1.23. "Exchange Act" shall mean the Securities
Exchange Act of 1934, as amended.

                  Section 1.24. "Exchange Agent" shall mean any trust company
who shall be designated by Greenwich to act in such capacity as contemplated by
Section 2.7 hereof.

                  Section 1.25. "Exercised Stock Option Shares" shall mean the
shares of UNC Common Stock actually issued or issuable under outstanding Stock
Options which (a)


                                        5


<PAGE>



have been exercised by the holders prior to the Closing Date, and (b) are not
otherwise included in the calculation of the number of issued and outstanding
shares of UNC Common Stock on the Agreement Date set forth in Section 5.2.

                  Section 1.26. "GAAP" shall mean generally accepted accounting
principles as in effect in the United States of America at the time of the
preparation of the subject financial statement.

                  Section 1.27. "Governmental Authority" shall mean any federal,
state, provincial, municipal or other governmental department, commission,
board, bureau, agency or instrumentality, or any court, in each case whether of
the United States, any of its possessions or territories, or of any foreign
nation.

                  Section 1.28 "Greenwich" shall mean Greenwich Air Services,
Inc., a Delaware corporation.

                  Section 1.29. "Greenwich Businesses" shall mean, as of the
date specified, the collective reference to the Greenwich Commercial Aircraft
Business, the Greenwich Government Business and the Greenwich Aeroderivative
Business, as presently conducted by the Greenwich Companies and their respective
business operations.

                  Section 1.30. "Greenwich Class A Stock" shall mean the Class A
voting common stock, $.01 par value per share, of Greenwich.

                  Section 1.31 "Greenwich Class B Stock" shall mean the Class B
nonvoting common stock of Greenwich, $.01 par value per share.

                  Section 1.32 "Greenwich Commercial Aircraft Business" shall
mean the overhaul, maintenance and repair of commercial gas turbine aircraft
engines conducted at the engine service centers of the Greenwich Companies
located in Miami, Florida, Dallas, Texas, Ft. Worth, Texas, McAllen, Texas, East
Granby, Connecticut and Prestwick, Scotland.

                  Section 1.33. "Greenwich Companies" shall mean Greenwich, its
Subsidiaries and any Partnerships in which it has an interest.

                  Section 1.34 "Greenwich Securities Offering" shall mean the
public or private offering, for cash, of shares of Greenwich Class B Stock
and/or other Greenwich securities contemplated by Section 6.21 of this
Agreement, whether pursuant to a Registration Statement on Forms S-1 or S-3 (or
other applicable form for the registration of securities) or pursuant to an
applicable exemption from the registration requirements under the Securities
Act.

                  Section 1.35. "Greenwich Financial Statements" shall mean (a)
the audited consolidated balance sheet of Greenwich as of September 30, 1996,
and the audited consolidated statements of earnings, stockholders' equity and
cash flows for the fiscal year


                                        6


<PAGE>



then ended, together with the notes thereto, and (b) all other subsequent
interim unaudited quarterly financial statements of Greenwich and Greenwich SEC
Reports, true and correct copies of which have been provided by Greenwich to
UNC.

                  Section 1.36 "Greenwich Government Business" shall mean the
aircraft engine maintenance and repair programs managed and operated by the
Greenwich Companies for domestic and foreign governments and military agencies.

                  Section 1.37 "Greenwich Aeroderivative Business" shall mean
the overhaul, maintenance and repair of gas turbine engines used for industrial
and marine applications, and the management, sale, installation and maintenance
of power stations.

                  Section 1.38 "Greenwich Material Adverse Effect" shall mean
any circumstances, change in, or effect on, the Greenwich Companies, when taken
as a consolidated whole, or affecting the Greenwich Commercial Aircraft
Business, the Greenwich Government Business or the Greenwich Aeroderivative
Business, whether individually or collectively as to any one or more of such
Greenwich Businesses, which is, or could reasonably be expected to in the future
be, materially adverse to the operations, assets or liabilities, employee
relationships, customer or supplier relationships, earnings or results of
operations, financial projections or forecasts, or the business prospects and
condition (financial or otherwise) of the Greenwich Companies or any one or more
of the Greenwich Businesses, whether individually or taken as a consolidated
whole with respect to the Greenwich Companies.

                  Section 1.39 "Greenwich Subsidiary" or "Greenwich
Subsidiaries" shall mean the singular or plural reference, as the case may be,
to any one or more direct or indirect Subsidiaries of Greenwich, all of which
are listed (including their states of incorporation and percentage of
outstanding capital stock directly or indirectly beneficially owned by
Greenwich) on Schedule 1.39.

                  Section 1.40. "Greenwich SEC Reports" shall mean (a)
Greenwich's Annual Reports on Form 10-K for the fiscal years ended September 30,
1996, September 30, 1995, and September 30, 1994; and (b) all other documents,
reports and registration statements filed by Greenwich under the Exchange Act or
the Securities Act.

                  Section 1.41 "Indebtedness" shall mean, with respect to UNC,
any UNC Subsidiary and the UNC Companies, as a consolidated whole, as applicable
(a) all indebtedness, whether or not contingent, for borrowed money, (b) all
obligations for the deferred purchase price of property or services except trade
accounts payable and accrued liabilities that arise in the ordinary course of
business, (c) all obligations evidenced by notes, bonds, debentures or other
similar instruments, (d) all indebtedness created or arising under any
conditional sale or other title retention agreement with respect to property
acquired (even though the rights and remedies of the seller or lender under such
agreement in the event of default are limited to repossession or sale of such
property), (e) all obligations as lessee under


                                        7


<PAGE>



leases that have been or should be, in accordance with GAAP, recorded as capital
leases, (f) all obligations, contingent or otherwise, under acceptance, letter
of credit or similar facilities, (g) all obligations to purchase, redeem,
retire, defease or otherwise acquire for value any capital stock or any
warrants, rights or options to acquire such capital stock, valued, in the case
of redeemable preferred stock, at the greater of its voluntary or involuntary
liquidation preference plus accrued and unpaid dividends but only to the extent
such obligation is payable (i) at a fixed or determinable date, whether by
operation of a sinking fund or otherwise, (ii) at the option of any other Person
or (iii) upon the occurrence of a condition not solely within their control,
such as a redemption required to be made out of future earnings, (h) all
Indebtedness of others referred to in clauses (a) through (f) above guaranteed
directly or indirectly in any manner or in effect guaranteed directly or
indirectly through an agreement (A) to pay or purchase such Indebtedness or to
advance or supply funds for the payment or purchase of such Indebtedness, (B) to
purchase, sell or lease (as lessee or lessor) property, or to purchase or sell
services, primarily for the purpose of enabling the debtor to make payment of
such Indebtedness or to assure the holder of such Indebtedness against loss, (C)
to supply funds to or in any other manner invest in the debtor (including any
agreement to pay for property or services irrespective of whether such property
is received or such services are rendered) or (D) otherwise to assure a creditor
against loss, and (i) all Indebtedness referred to in clauses (a) through (f)
above secured by (or for which the holder of such Indebtedness has an existing
right, contingent or otherwise, to be secured by) any encumbrance on property
(including, without limitation, accounts and contract rights) owned, even though
payment of such Indebtedness has not been assumed or become a liability.

                  Section 1.42. "HSR Act" shall mean the Hart-Scott-Rodino
Antitrust Improvements Act of 1976, as amended.

                  Section 1.43. "IRS" shall mean the Internal Revenue Service.

                  Section 1.44. "Joint Proxy Statement/Prospectus" shall mean
the Joint Proxy Statement/Prospectus of Greenwich and UNC included in the
Registration Statement and distributed to the stockholders of each company in
connection with the Stockholders Meetings.

                  Section 1.45 "Knowledge of Greenwich" shall mean the actual
knowledge, after due inquiry, of those officers of Greenwich identified on
Schedule 1.45.

                  Section 1.46. "Knowledge of UNC" shall mean the actual
knowledge, after due inquiry, of those officers of UNC identified on Schedule
1.46.

                  Section 1.47. "Law" shall mean any federal, state, provincial,
local or other law or governmental requirement of any kind, and the rules,
regulations and orders promulgated thereunder.

                  Section 1.48. "Merger" shall have the meaning given in Section
2.1 hereof. 

                  Section 1.49. "Merger Subsidiary" shall mean Condor
Acquisition Corporation, a Delaware corporation and wholly-owned subsidiary of
Greenwich.



                                        8


<PAGE>




                  Section 1.50 "Multiemployer Plan" shall mean an Employee Plan
that is a "multiemployer plan" within the meaning of Section 3(37) of ERISA, to
which any of the Sellers or Businesses contributes or has contributed or has or
has had an obligation to contribute.

                  Section 1.51. "Nasdaq" shall mean The Nasdaq National Market.

                  Section 1.52. "NYSE" shall mean The New York Stock Exchange,
Inc.

                  Section 1.53. "Partnership" shall mean any limited or general
partnership, joint venture or other business association, other than a
Subsidiary, in which any party has a direct or indirect interest (collectively,
"Partnerships"), all of such Partnerships of Greenwich being listed on Schedule
1.53A attached hereto and all of such Partnerships of UNC being listed on
Schedule 1.53B attached hereto.

                  Section 1.54 "Pension Plan" shall mean an Employee Plan, other
than a Multiemployer Plan, that is either (a) covered by Title IV of ERISA or
subject to the minimum funding standards of Section 412 of the Code, or (b) an
Employee Plan in the nature of a defined contribution or defined benefit pension
plan under the laws of the United Kingdom and/or Scotland.

                  Section 1.55 "Person" shall mean any individual, partnership,
firm, corporation, limited liability company, association, trust, unincorporated
organization or other entity, as well as any syndicate or group that would be
deemed to be a "person" under Section 13(d)(3) of the Exchange Act.

                  Section 1.56. "Permits" shall mean permits, licenses and
governmental authorizations, registrations and approvals.

                  Section 1.57. "Certificate of Merger" shall mean the
certificate of merger between UNC and the Merger Subsidiary, in form and content
reasonably satisfactory to counsel to UNC and Greenwich.

                  Section 1.58. "Preferred Stock Conversion Shares" shall mean
the 3,571,429 shares of UNC Common Stock issuable upon conversion into UNC
Common Stock of all of the 250,000 issued and outstanding shares of UNC Series B
Preferred Stock (subject to adjustment of such number of Preferred Stock
Conversion Shares as provided in the Series B Preferred Stock Purchase
Agreement).

                  Section 1.59. "Registration Statement" shall mean, as
applicable (a) the Registration Statement on Form S-4, including the Joint Proxy
Statement/Prospectus contained therein, to be filed with the SEC with respect to
the Merger and the Greenwich Class B Stock to be offered to the holders of UNC
Common Stock Equivalents in the Merger; and (b) the Registration Statement on
Form S-1 or Form S-3, to be filed by Greenwich with the SEC with respect to the
Greenwich Class B Stock to be offered to the public for cash, as contemplated by
Section 6.21 hereof.



                                        9


<PAGE>

                  Section 1.60 "Real Estate" shall mean, with respect to any of
the UNC Companies, as applicable, all of the fee or leasehold ownership right,
title and interest of such UNC Company, in and to all real estate and
improvements owned or leased by any of the UNC Companies and which is used by
any of the UNC Companies in connection with the operation of the UNC Businesses,
including without limitation, all of the real estate and improvements described
on Schedule 1.60.

                  Section 1.61 [intentionally omitted].

                  Section 1.62 "Schedules" shall mean the schedules prepared by
UNC and Greenwich, respectively, annexed to this Agreement and made a part
hereof, as the same may be modified or updated by agreement of the parties
through and including the Closing Date. A disclosure contained in any one
Schedule shall be deemed to be a disclosure for any and all purposes hereunder.

                  Section 1.63. "SEC" shall mean the Securities and Exchange
Commission.

                  Section 1.64 "Securities Act" shall mean the Securities Act of
1933, as amended.

                  Section 1.65. "Series B Preferred Stock Purchase Agreement"
shall mean the securities purchase agreement, dated as of October 4, 1995,
between UNC and Network III Holdings, LDC, Gildea Investment Company, Iron City
Partners, Inc., Ariel Fund Ltd. and Pequod Investments, L.P., pursuant to which
UNC sold for $25 million an aggregate of 250,000 shares of UNC Series B
Preferred Stock.

                  Section 1.66 "Stock Options" shall mean the collective
reference to (a) the various types of UNC stock options which are authorized for
issuance under the Stock Option Plans, and (b) the outstanding warrants to
purchase shares of UNC Common Stock, all of which are reflected on Schedule 5.2.

                  Section 1.67 "Stock Option Plans" shall mean the individual
and collective reference to all qualified and nonqualified stock option plans,
incentive stock option plans, non-employee directors' stock option plans and
other rights to purchase shares of UNC Common Stock granted to employees, and
which are summarized and disclosed on Schedule 5.2.

                  Section 1.68. "Stockholders Meetings" shall mean,
collectively, the special or annual meeting of stockholders of Greenwich and the
special or annual meeting of stockholders of UNC called pursuant to Section 3.1
hereof to consider and approve the transactions contemplated herein, and any
adjournments thereof.

                  Section 1.69. "Subsidiary" shall mean (i) each corporate
entity with respect to which a party has the right to vote (directly or
indirectly through one or more other entities or otherwise) shares representing
50% or more of the votes eligible to be cast in the election of directors of
such entity, and (ii) each other corporate entity which constitutes a
"significant 

                                       10


<PAGE>



subsidiary," as defined in Rule 1-02 of Regulation S-X adopted under the
Exchange Act (collectively, "Subsidiaries"), all of the Subsidiaries of
Greenwich being listed on Schedule 1.39 and all of the Subsidiaries of UNC being
listed on Schedule 1.84.

                  Section 1.70. "UNC" shall mean UNC Incorporated, a Delaware
corporation.

                  Section 1.71 "UNC Lear Siegler Business" shall mean the
provision of contract services to United States and foreign military and other
government agencies, consisting primarily of aircraft maintenance and pilot
training.

                  Section 1.72 "UNC Businesses" shall mean, as of the specific
date referenced, the collective reference to the UNC Garrett Business, the UNC
Manufacturing Business and the UNC Lear Siegler Business, as presently conducted
by the UNC Companies and their respective business operations.

                  Section 1.73. "UNC Common Stock" shall mean the Common Stock,
$0.20 par value per share, of UNC.

                  Section 1.74. "UNC Common Stock Equivalents" shall mean the
securities representing the total of the following (i) the shares of UNC Common
Stock issued and outstanding on the Agreement Date (exclusive of Treasury
Shares), (ii) the Preferred Stock Conversion Shares, and (iii) the Exercised
Stock Option Shares.

                  Section 1.75. "UNC Companies" shall mean UNC, its Subsidiaries
and the Partnerships in which it has an interest.

                  Section 1.76. "UNC Financial Statements" shall mean (a) the
audited consolidated balance sheet of UNC as of December 31, 1995, and the
audited consolidated statements of earnings, stockholders' equity and cash flows
for the fiscal year then ended, together with the notes thereto, and (b) all
other subsequent interim unaudited quarterly financial statements of UNC,
through and including the four quarters ended December 31, 1996, and (c) the UNC
SEC Reports, true and correct copies of which have been provided by Greenwich to
UNC.

                  Section 1.77. "UNC Garrett Business" shall mean the overhaul,
maintenance and repair of gas turbine aircraft and aircraft engines and
accessories, airframe retrofits and completion and spare parts distribution,
primarily for business aircraft.

                  Section 1.78. "UNC Manufacturing Business" shall mean the
provision of specialized aviation product manufacturing and repair services on
an outsourced basis for the major engine and airframe OEMs and the provision of
manufactured products and repairs directly to the United States military.

                  Section 1.79. "UNC Material Adverse Effect" shall mean any
circumstances, change in, or effect on, the UNC Companies, when taken as a
consolidated whole, or affecting the 

                                       11


<PAGE>



Garrett Aviation Services Business, UNC Lear Siegler Business or UNC
Manufacturing Business, whether individually or collectively as to any one or
more of such UNC Businesses, which is, or could reasonably be expected to in the
future be, materially adverse to the operations, assets or liabilities, employee
relationships, customer or supplier relationships, earnings or results of
operations, financial budgets and forecasts or the business prospects and
condition (financial or otherwise) of the UNC Companies or any one or more of
UNC Businesses, whether individually or taken as a consolidated whole with
respect to the UNC Companies.

                  Section 1.80. "UNC Material Contracts" shall mean the types of
Contracts referred to in Section 5.10 of this Agreement to which UNC or any of
UNC Subsidiaries is a party signatory, including, without limitation, the
AlliedSignal Agreements.

                  Section 1.81. "UNC Notes" shall mean the collective reference
to (a) UNC's 9-1/8% $100 million principal amount Senior Notes Due 2003, (b)
UNC's 11% $125 million principal amount Senior Subordinated Notes Due 2006, and
(c) UNC's 7-1/2% $64.8 million Junior Convertible Subordinated Debentures Due
2006.

                  Section 1.82. "UNC Preferred Stock" shall mean the collective
reference to 12,000,000 authorized shares of UNC preferred stock, $1.00 par
value per share, of which (a) 250,000 shares of Series A Junior Participating
Preferred Stock are authorized for issuance, (b) 250,000 shares of UNC Series B
Preferred Stock are authorized, and (c) 250,000 of Series C Senior Cumulative
Preferred Stock are authorized .

                  Section 1.83. "UNC Series B Preferred Stock" shall mean the
250,000 authorized, issued and outstanding shares of Series B senior cumulative
convertible UNC Preferred Stock, par value $1.00 per share.

                  Section 1.84 "UNC Subsidiary" or "UNC Subsidiaries" shall mean
the singular or plural reference, as the case may be, to any one or more direct
or indirect Subsidiaries of UNC, all of which are listed (including their states
of incorporation and percentage of outstanding capital stock directly or
indirectly beneficially owned by UNC) on Schedule 1.84.

                  Section 1.85. "UNC SEC Reports" shall mean (a) UNC's Annual
Reports on Form 10-K for the fiscal years ended December 31, 1995, December 31,
1994, and December 31, 1993, and (b) all other documents, reports and
registration statements filed by UNC with the SEC pursuant to the Exchange Act
and the Securities Act.

                  Section 1.86. "Taxes" shall mean any and all taxes, levies,
imposts, duties, assessments, charges and withholdings imposed or required to be
collected by or paid over to any federal, state, local or foreign Governmental
Authority or any political subdivision thereof, including without limitation
income, gross receipts, ad valorem, value added, minimum tax, franchise, sales,
use, excise, license, real or personal property, unemployment, disability, stock
transfer, mortgage recording, estimated, withholding or other tax, governmental
fee or other like assessment or charge of any kind whatsoever, and including any
interest, penalties, fines,

                                       12


<PAGE>



assessments or additions to tax imposed in respect of the foregoing, or in
respect of any failure to comply with any requirement regarding Tax Returns.

                  Section 1.87. "Tax Return" shall mean any report, return,
information statement, payee statement or other information required to be
provided to any federal, state, local or foreign Governmental Authority, or
otherwise retained, with respect to Taxes or the UNC Benefit Plans.

                  Section 1.88. "Salomon" shall mean Salomon Brothers, Inc.,
financial advisors to Greenwich.


                                   ARTICLE II
                                   THE MERGER

                  Section 2.1. The Merger.

                           (a) Greenwich has formed Merger Subsidiary as a
wholly-owned subsidiary under the laws of the State of Delaware. Subject to the
terms and conditions of this Agreement, Greenwich will cause Merger Subsidiary
to execute and deliver the Certificate of Merger, and Greenwich, as the sole
stockholder of Merger Subsidiary, will approve the execution, delivery and
performance of the Certificate of Merger by Merger Subsidiary.

                           (b) Subject to the terms and conditions of this
Agreement and the Certificate of Merger, at the Effective Time, UNC shall be
merged into Merger Subsidiary and the separate existence of UNC shall thereupon
cease, with Merger Subsidiary being the surviving corporation in the Merger (the
"Surviving Corporation"). Upon the effectiveness of the Merger, Merger
Subsidiary shall possess all of the rights, privileges, powers and franchises of
each of the Constituent Corporations, and all property, real, personal and
mixed, and all debts due to any of the Constituent Corporations on whatever
account, as well for stock subscriptions as all other things in action or
belonging to each of the Constituent Corporations shall be vested in the
Surviving Corporation; and all property, rights, privileges, powers and
franchises, and all and every other interest shall be thereafter as effectually
the property of the Surviving Corporation as they were of the Constituent
Corporations, and the title to any Real Estate vested by deed or otherwise in
any of the Constituent Corporations shall not revert or be in any way impaired
by reason of the Merger; but all rights of creditors and all liens upon any
property of any of the Constituent Corporations shall be preserved unimpaired,
and all debts, liabilities and duties of the Constituent Corporations shall
thenceforth attach to the Surviving Corporation, and may be enforced against it
to the same extent as if said debts, liabilities and duties had been incurred or
contracted by it.

                           (c) The Certificate of Merger shall be in form and
substance satisfactory to the parties hereto and their respective legal counsel.

                           (d) The Certificate of Incorporation of Merger
Subsidiary, as in effect immediately prior to the Effective Time, shall be the
Certificate of Incorporation of the Surviving Corporation, except that Article
First thereof shall be amended to read as follows:


                                       13


<PAGE>



                  "FIRST: The name of the Corporation is UNC Incorporated"

and thereafter may be amended in accordance with its terms and as provided by
law.

                           (e) The Bylaws of the Merger Subsidiary as in effect
at the Effective Time shall be the Bylaws of the Surviving Corporation.

                           (f) The entire board of directors of the Surviving
Corporation shall consist of (i) the existing directors of Merger Subsidiary at
the Effective Time (the "Merger Subsidiary Board"), and (ii) those additional
persons who are listed in Schedule 2.1(f) or who are otherwise acceptable to a
majority of the members of the Merger Subsidiary Board (collectively, with the
Merger Subsidiary Board, the "Surviving Corporation Board"). The members of the
Surviving Corporation Board shall serve until their respective successors are
duly elected and qualified in the manner provided in the Certificate of
Incorporation and Bylaws of the Surviving Corporation, or as otherwise provided
by law. All of the members of the Board of Directors of UNC shall tender their
written resignations effective as of the Effective Time.

                           (g) The officers of the Surviving Corporation shall
initially consist of the persons listed in Schedule 2.1(g) or such other persons
acceptable to the Surviving Corporation Board; which officers shall serve until
their successors are duly elected and qualified in the manner provided in the
Certificate of Incorporation and Bylaws of the Surviving Corporation, or as
otherwise provided by law.

                  Section 2.2 Merger Consideration.

                           (a) Base UNC Equity Value. It is the intention of the
parties hereto that, as of the Effective Time, by virtue of the Merger and
without any action on the part of any holder: (i) all holders of the UNC Common
Stock Equivalents as at the Effective Time shall be entitled to receive, in the
manner and subject to the adjustments set forth in Section 2.3, aggregate
consideration (the "Merger Consideration") which shall be calculated based on
the Base UNC Equity Value; and (ii) each such holder of UNC Common Stock
Equivalents shall be entitled to receive, in the manner and subject to the
adjustments set forth in Section 2.3, aggregate Merger Consideration equal to
not less than the number of UNC Common Stock Equivalents owned of record by such
holder on the Closing Date, multiplied by the Base UNC Equity Value Per Share.
As used herein, the term "Base UNC Equity Value Per Share" shall mean (x) the
Base UNC Equity Value divided by (y) the aggregate number of UNC Common Stock
Equivalents outstanding on the Closing Date.

                           Based upon the 18,276,681 shares of UNC Common Stock
issued and outstanding (other than Treasury Shares, as hereinafter defined) and
the 3,571,429 Preferred Stock Conversion Shares issuable as at December 31,
1996, such Base UNC Equity Value would have been $305,873,540 on such date,
before giving effect to adjustments in such Base UNC Equity Value resulting from
(i) adjustments to the aggregate number of issuable Preferred Stock Conversion
Shares as provided in the Series B Preferred Stock Purchase Agreement, and (ii)
Exercised Stock Option Shares.

                           In addition to such Base UNC Equity Value, all
holders of UNC Common Stock Equivalents shall be entitled, to the limited extent
set forth in Section 2.3(b) below, to

                                       14


<PAGE>



participate in certain appreciation, if any, in the market value of shares of
Greenwich Class B Stock between the Agreement Date and the Closing Date.

                           (b) Payment of Merger Consideration. Greenwich shall
pay the Merger Consideration to the holders of UNC Common Stock Equivalents
solely in shares of Greenwich Class B Stock; provided, that, subject to the
limitations and conditions hereinafter set forth, the holders of UNC Common
Stock Equivalents may, pursuant to the procedures set forth in Section 2.7
hereof, elect prior to the Closing Date to receive all or any portion of their
Merger Consideration in cash. Notwithstanding anything to the contrary, express
or implied, contained in this Agreement, in no event shall Greenwich be
obligated to pay an aggregate amount in cash for all of such UNC Common Stock
Equivalents (the "Cash Merger Consideration") which shall be greater than fifty
(50%) percent of the Base UNC Equity Value (the "Maximum Required Cash Merger
Consideration"); provided, that Greenwich may, in its sole and absolute
discretion, pay Cash Merger Consideration in an aggregate amount up to sixty
(60%) percent of the Base UNC Equity Value; provided, further, that, as a
condition to Greenwich's making aggregate payments of the Cash Merger
Consideration in amounts exceeding the Maximum Required Cash Merger
Consideration, (i) holders of a sufficient number of shares of UNC Common Stock
Equivalents shall have elected to receive Cash Merger Consideration, and (ii)
UNC shall have received a legal opinion from counsel acceptable to it to the
effect that payment of Cash Merger Consideration in an aggregate amount equal to
more than fifty (50%) percent of the Base UNC Equity Value will not adversely
affect the Merger qualifying as a reorganization within the meaning of Section
368(a)(2)(D) of the Code.

                  Section 2.3 Exchange Ratio.

                           (a) Each holder of UNC Common Stock Equivalents shall
be entitled to receive on the Effective Date, without any further action on such
holder's part, that number of shares of Greenwich Class B Stock as shall be
determined by multiplying (i) the number of UNC Common Stock Equivalents held by
such holder by (ii) the Exchange Ratio (as hereinafter defined).

                           (b) For purposes hereof, "Exchange Ratio" shall mean
the fraction (expressed as a decimal to the nearest ten thousandth) determined
as follows:

                                    (i) If the Closing Date Market Value is less
than or equal to $24.86, the Exchange Ratio shall be (A) the Base UNC Equity
Value Per Share divided by (B) the Closing Date Market Value; or

                                    (ii) If the Closing Date Market Value
exceeds $24.86 but is less than or equal to $28.59, the Exchange Ratio shall be
0.5632; or

                                    (iii) If the Closing Date Market Value
exceeds $28.59, then the Exchange Ratio shall be (A) 115% of the Base UNC Equity
Value per Share divided by (B) the Closing Date Market Value.

                  Section 2.4 Conversion of Securities. The Merger Consideration
shall be issuable on the Effective Time and allocated in the manner hereinafter
set forth.


                                       15


<PAGE>



                           (a) Merger Subsidiary Shares. All issued and
outstanding shares of capital stock of Merger Subsidiary shall be converted into
1,000 issued and outstanding shares of common stock, $.01 par value per share,
of the Surviving Corporation.

                           (b) Treasury Shares. All issued and outstanding
shares of UNC Common Stock which are held by UNC, any Subsidiary of UNC,
Greenwich, Merger Subsidiary or any other Subsidiary of Greenwich (collectively,
the "Treasury Shares") shall be canceled.

                           (c) Outstanding UNC Common Stock Equivalents. All
remaining issued and outstanding shares of UNC Common Stock Equivalents (other
than Dissenting Shares, as hereinafter defined) shall be canceled and converted
into the right to receive, in full consideration of such shares of UNC Common
Stock Equivalents (i) shares of Greenwich Class B Stock as determined in Section
2.3 or (ii) to the extent elected by a holder of such shares (and available for
payment on a pro-rata basis as hereinafter provided), cash at the rate of the
Base UNC Equity Value Per Share (regardless of the Exchange Ratio then in
effect).

                           (d) Allocation of Cash Merger Consideration. The Cash
Merger Consideration shall be allocated by the Exchange Agent among each holder
of UNC Common Stock Equivalents, on an equitable pro-rata basis, based upon the
aggregate amount by which the Maximum Required Cash Merger Consideration shall
be less than the aggregate amount in Cash Merger Consideration which all holders
of UNC Common Stock Equivalents shall request to receive hereunder as Merger
Consideration. To the extent that the requested amount of Cash Merger
Consideration shall be greater than the Maximum Required Cash Merger
Consideration (subject to increase of such amount to up to sixty (60%) percent
of the Base UNC Equity Value, as hereinabove provided), the actual Cash Merger
Consideration to be received following the Effective Date by each holder of UNC
Common Stock Equivalents shall be proportionately reduced by allocating the
Maximum Required Cash Merger Consideration among all holders of UNC Common Stock
Equivalents, based upon a percentage equal to (i) the amount by which the Cash
Merger Consideration requested by each holder of UNC Stock Equivalents bears to
(ii) the amount of Cash Merger Consideration requested by all holders of UNC
Stock Equivalents.

                           (e) Dissenting Shares. Notwithstanding the foregoing
provisions or any other provision of this Agreement to the contrary, in the
event, and only in the event, that the Merger is approved by less than 90% of
the outstanding UNC Common Stock Equivalents entitled to vote at the UNC
Stockholders' Meeting, UNC Common Stock Equivalents held by any holder who shall
have taken the necessary steps under the DGCL to dissent and demand payment and
is otherwise entitled to such payment under the DGCL, if the DGCL provides for
such payment in connection with the Merger ("Dissenting Shares") shall not be
converted into the right to receive Merger Consideration at or after the
Effective Time unless and until the holder of such Dissenting Shares withdraws
his or her demand for such appraisal with the consent of UNC, if required by the
DGCL, or becomes ineligible for such appraisal. If a holder of Dissenting Shares
shall withdraw his or her demand for such appraisal with the consent of UNC, if
required by the DGCL, or shall become ineligible for such appraisal (through
failure to perfect or otherwise), then, as of the Effective Time or the
occurrence of such event, whichever last occurs, such holder's Dissenting Shares
shall automatically be converted into and represent the right to receive Merger
Consideration as provided above. UNC shall give Greenwich (i) prompt notice of
any

                                       16


<PAGE>



written demands for appraisal, withdrawals of demands for appraisal and any
other instruments served pursuant to Section 262 of the DGCL received by UNC,
and (ii) the opportunity to direct all negotiations and proceedings with respect
to demands for appraisal under Section 262 of the DGCL. UNC will not voluntarily
make any payment with respect to any demands for appraisal and will not, except
with the prior written consent of Greenwich, settle or offer to settle any such
demands. Each holder of Dissenting Shares shall have only such rights and
remedies as are granted to such a holder under Section 262 of the DGCL.

                           (f) Stock Options. All unexercised UNC Stock Options
which shall be outstanding as at the Closing Date shall be canceled and
converted into the right to receive, in full consideration of such securities,
either (i) a cash payment equal to the product of multiplying: (A) the aggregate
number of shares of UNC Common Stock issuable upon exercise of such unexercised
UNC Stock Options (the "Unexercised Option Shares"), by (B) the difference
between $14.00 and the applicable exercise price per share attributable to such
Unexercised Option Shares (the "Spread"), or (ii) at Greenwich's election, that
number of shares of Greenwich Class B Stock which shall be equal to the number
of Unexercised Option Shares, multiplied by the Exchange Ratio multiplied by a
fraction, the numerator of which is the Spread and the denominator of which is
14 (the "Cashless Exercise").

                  Section 2.5 Adjustment for Stock Splits, Stock Combination,
Dividends and Distributions. In the event and to the extent that:

                  (i) Greenwich at any time between the Agreement Date and the
         Effective Time of the Merger shall effect a subdivision of its
         outstanding shares of Greenwich Common Stock by any manner, the
         Exchange Ratio then in effect immediately before the subdivision shall
         be proportionately increased and the share totals resulting therefrom
         (the "Greenwich Stock Amounts") then in effect immediately before the
         subdivision shall be proportionately increased, and conversely, if
         Greenwich at any time between the date of this Agreement and the
         Effective Time shall combine outstanding shares of Greenwich Common
         Stock into a smaller number of shares, all of the Greenwich Exchange
         Ratios then in effect immediately before the combination shall be
         proportionately decreased and the Greenwich Stock Amounts then in
         effect immediately before such combination shall be proportionately
         decreased. Any adjustment under this subsection shall become effective
         at the close of business on the date the subdivision or combination
         becomes effective, as the case may be.

                  (ii) Greenwich at any time between the Agreement Date and the
         Effective Time of the Merger make or issue, or fix a record date for
         the determination of holders of Greenwich Common Stock entitled to
         receive, a dividend or other distribution payable in additional shares
         of Greenwich Common Stock, then and in each such event:

                           (A) the Greenwich Exchange Ratios in effect
                           immediately prior to the issuance of such share
                           dividend or distribution or, in the event a record
                           dated is fixed, as of the close of business on such
                           record date, as the case may be, shall be decreased,
                           by multiplying the Greenwich Exchange Ratios then in
                           effect immediately before the issuance or fixing of
                           the record date, 

                                       17


<PAGE>


                           as the case may be, by a fraction (x) the numerator
                           of which is the total number of shares of Greenwich
                           Common Stock issued and outstanding immediately prior
                           to the time of such issuance or the fixing of such
                           record date, and (y) the denominator of which shall
                           be the total number of shares of Greenwich Class B
                           Stock issued and outstanding immediately prior to the
                           time of such issuance or the fixing of such record
                           date plus the number of shares of Greenwich Common
                           Stock issuable in payment of such dividend or
                           distribution; and

                           (B) The Greenwich Stock Amounts then in effect shall
                           be increased as of the time of such issuance or, in
                           the event such record date is fixed, as of the close
                           of business on such record date, by multiplying the
                           Greenwich Stock Amounts then in effect by a fraction
                           (x) the numerator of which is the total number of
                           shares of Greenwich Common Stock issued and
                           outstanding immediately prior to the time of such
                           issuance or the close of business on such record date
                           plus the number of shares of Greenwich Common Stock
                           issuable in payment of such dividend or distribution,
                           and (y) the denominator of which shall be the total
                           number of shares of Greenwich Common Stock issued and
                           outstanding immediately prior to the time of such
                           issuance or the close of business on such record
                           date;

provided, however, that if such record date if fixed, the adjustments pursuant
to this Section 2.5 are made and such dividend is not fully paid or such
distribution is not fully made on the date fixed therefor, the Exchange Ratio
and the Greenwich Stock Amounts shall be recomputed accordingly as of the close
of business on date fixed for the dividend or distribution, as the case may be,
and thereafter the Exchange Ratio and Greenwich Stock Amounts shall be adjusted
pursuant to this subjection as of the time of actual payment of such dividends
or distributions.

                  Section 2.6 Fractional Shares. No fraction of a share of
Greenwich Class B Stock shall be issued in connection with the conversion of UNC
Common Stock in the Merger and the distribution of Greenwich Class B Stock in
respect thereof, but in lieu of such fraction, the Exchange Agent shall make a
cash payment (without interest) equal to the same fraction of the Closing Date
Market Value of a full share of Greenwich Class B Stock.

                  Section 2.7. Exchange of Certificates.

                           (a) Before the Effective Time, Greenwich shall
appoint the Exchange Agent to act as the exchange agent in connection with the
Merger. Not less than thirty (30) days prior to the Effective Time, UNC and
Greenwich shall jointly prepare written instructions (which shall be included as
an exhibit to the Joint Proxy Statement/Prospectus) to each holder of UNC Common
Stock Equivalents setting forth the terms of this Agreement and the method by
which each such holder may elect to receive Merger Consideration in the form of
shares of Greenwich Class B Stock and Cash Merger Consideration. From and after
the Effective Time, each holder of a certificate which immediately before the
Effective Time represented outstanding shares of UNC Common Stock (a "UNC
Certificate") shall be entitled to receive in exchange therefor, upon surrender
thereof to the Exchange Agent (i) payment of the applicable amount of Cash
Merger




                                       18


<PAGE>



Consideration attributable to such shares of Common Stock Equivalents,
and (ii) a certificate or certificates representing the number of whole shares
of Greenwich Class B Stock into which such holder's Common Stock Equivalents
were converted in the Merger (together with cash in lieu of fractional shares).
Immediately before the Effective Time, Greenwich will deliver to the Exchange
Agent, in trust for the benefit of the holders of UNC Common Stock Equivalents,
shares of Greenwich Class B Stock (together with cash in immediately available
funds in an amount sufficient to pay the aggregate Cash Merger Consideration and
cash in lieu of fractional shares, as provided in Section 2.6) necessary to make
the exchanges contemplated hereby on a timely basis.

                           (b) Promptly after the Effective Time, the Exchange
Agent shall mail to each record holder of UNC Common Stock Equivalents as of the
Effective Time, a letter of transmittal (which shall specify that delivery shall
be effected, and risk of loss and title to each UNC Certificate shall pass, only
upon proper delivery of such UNC Certificate to the Exchange Agent) and
instructions for use in effecting the surrender of UNC Certificates in exchange
for payment of the shares of Greenwich Class B Stock (together with cash in lieu
of fractional shares) and the applicable amount of Cash Merger Consideration.
Upon surrender to the Exchange Agent of a UNC Certificate, together with such
letter of transmittal duly executed, and any other required documents, the
holder of such UNC Certificate shall be entitled to receive in exchange therefor
the applicable number of shares of Greenwich Class B Stock (together with cash
in lieu of fractional shares) and such holder's applicable Cash Merger
Consideration, and such UNC Certificate shall forthwith be canceled. No holder
of a UNC Certificate shall be entitled to receive any dividend or other
distribution from Greenwich with respect to the shares of Greenwich Class B
Stock receivable upon surrender of such UNC Certificate until such holder's UNC
Certificate has been surrendered for a certificate or certificates representing
shares of Greenwich Class B Stock. Upon such surrender, there shall be paid to
the holder the amount of any dividends or other distributions (without interest)
which theretofore became payable, but which were not paid by reason of the
foregoing, with respect to the number of whole shares of Greenwich Class B Stock
represented by the certificates issued upon surrender. If payment of the cash
portion of the Merger Consideration per share of UNC Common Stock and/or per
share of UNC Series B Preferred Stock or delivery of Greenwich Class B Stock is
to be made to a person other than the person in whose name the UNC Certificate
surrendered is registered or if any certificate for shares of Greenwich Class B
Stock is to be issued in a name other than that in which the UNC Certificate
surrendered therefor is registered, it shall be a condition of such delivery or
issuance that the UNC Certificate so surrendered shall be properly endorsed or
otherwise in proper form for transfer and that the person requesting such
delivery or issuance shall pay any transfer or other taxes required by reason of
such delivery or issuance to a person other than the registered holder of the
UNC Certificate surrendered or establish to the satisfaction of Greenwich that
such tax has been paid or is not applicable. Until surrendered in accordance
with the provisions of this Section 2.7, each UNC Certificate shall represent
for all purposes only the right to receive payment of the shares of Greenwich
Class B Stock (and cash in lieu of fractional shares) and cash portion of the
Merger Consideration as provided in Section 2.2, without any interest thereon.

                           (c) After the Effective Time, there shall be no
transfers on the stock transfer books of UNC of the shares of UNC Common Stock
or shares of UNC Series B Preferred Stock that were outstanding immediately
before the Effective Time. If, after the


                                       19
<PAGE>

Effective Time, UNC Certificates are presented to Greenwich or UNC
for transfer, they shall be cancelled and exchanged for payment of the shares of
Greenwich Class B Stock (and cash in lieu of fractional shares) and applicable
amount of per share cash Merger Consideration as provided in Section 2.3, in
accordance with the procedures set forth in this Section 2.7.

                           (d) Any shares of Greenwich Class B Stock (and any
accrued dividends and distributions thereon), and any cash delivered to the
Exchange Agent for payment of the applicable per share cash Merger Consideration
or payment in lieu of fractional shares, that remain unclaimed by the former
stockholders of UNC on the first anniversary of the Effective Time shall be
delivered by the Exchange Agent to Greenwich. Any former stockholders of UNC who
have not theretofore complied with this Section 2.7 shall thereafter look only
to Greenwich for satisfaction of their claim for the consideration set forth in
the Certificate of Merger, without any interest thereon.

                           (e) Notwithstanding the foregoing, neither Greenwich
nor UNC shall be liable to any holder of shares of UNC Common Stock or UNC
Series B Preferred Stock for any payment of the per share cash portion of the
Merger Consideration or for any shares of Greenwich Class B Stock (or dividends
or distributions with respect thereto) delivered to a public official pursuant
to any applicable abandoned property, escheat or similar law.

                  Section 2.8 Transfer Taxes. If any cash to be paid in the
Merger is to be paid to a person other than the holder in whose name the
certificate representing shares of UNC Common Stock or Series B Preferred Stock
surrendered in exchange therefor is registered, it shall be a condition of such
exchange that the certificate so surrendered shall be properly endorsed or that
the certificate so surrendered shall be properly endorsed or otherwise in proper
form for transfer and that the person requesting such exchange shall pay to the
Exchange Agent any transfer or other taxes required by reason of the payment of
such cash to a person other than the registered holder of the certificate
surrendered, or shall establish to the satisfaction of the Exchange Agent that
such tax has been paid or is not applicable.

                                   ARTICLE III
                              STOCKHOLDER APPROVAL

                  Section 3.1. Stockholder Approval.

                           (a) This Agreement shall be submitted for
consideration and approval to the holders of shares of Greenwich Class A Stock
at a special or annual meeting of stockholders duly held for such purpose by
Greenwich.

                           (b) This Agreement and the Certificate of Merger
shall be submitted for consideration and approval to the holders of shares of
UNC Common Stock and, to the extent required by applicable Law, the holders of
shares of UNC Series B Preferred Stock, at a special or annual meeting of
stockholders duly held for such purpose by UNC. Each of the stockholders of UNC
identified in Schedule 3.1A has duly executed and delivered to Greenwich a
letter agreement in the form of Schedule 3.1B with respect to, among other
things, such stockholder's agreement to vote all shares of UNC Common Stock over
which such stockholder exercises 




                                       20
<PAGE>

voting control for approval of this Agreement and the Certificate of Merger at
the UNC Stockholders Meeting.

                           (c) UNC and Greenwich shall each promptly call a
meeting of its stockholders for the purpose of voting upon this Agreement and
the Merger and UNC and Greenwich each agrees that this Agreement and the Merger
shall be submitted at a meeting of the stockholders of UNC and UNC shall take
all steps necessary to duly call, give notice of, convene, and hold such
meetings (the "Stockholders' Meeting"). The Stockholders' Meeting shall be held
as soon as practicable following the date upon which the Registration Statement
of which the Joint Proxy Statement/Prospectus shall constitute a part shall be
declared effective by the SEC.

                  Section 3.2 Effective Time of the Merger. Greenwich and UNC
shall coordinate and cooperate with respect to the timing of the Stockholders
Meetings and shall endeavor to hold such meetings on the same day and as soon as
practicable after the date hereof. The respective Boards of Directors of
Greenwich and UNC shall recommend that their respective stockholders approve
this Agreement and the Certificate of Merger and the transactions contemplated
hereby and thereby, and such recommendation shall be contained in the Joint
Proxy Statement/Prospectus. On the first business day on or by which (i) this
Agreement and the Certificate of Merger have been duly approved by the requisite
vote of the holders of shares of Greenwich Class A Stock and UNC Common Stock,
and (ii) the Closing of the transactions contemplated by this Agreement and the
Certificate of Merger shall have occurred, or such later date as shall be agreed
upon by Greenwich and UNC, a Certificate of Merger shall be filed in accordance
with the DGCL, and the Merger shall become effective in accordance with the
terms of the Certificate of Merger at the time and date contemplated therein
(such time and date being referred to herein as the "Effective Time").

                                   ARTICLE IV
                   REPRESENTATIONS AND WARRANTIES OF GREENWICH

                  Greenwich represents and warrants to UNC as follows:

                  Section 4.1. Organization and Authority of the Greenwich
Companies. Each of the Greenwich Companies is duly organized, validly existing
and in good standing under the laws of its respective jurisdiction of
organization. Each of the Greenwich Companies has full corporate or partnership
power to carry on its respective business as it is now being conducted and to
own, operate and hold under lease its assets and properties as, and in the
places where, such properties and assets now are owned, operated or held. Each
of the Greenwich Companies is duly qualified as a foreign entity to do business,
and is in good standing, in each jurisdiction where the failure to be so
qualified would have a Greenwich Material Adverse Effect. Schedule 1.39
constitutes a true and complete list of all of the Subsidiaries of Greenwich,
and Schedule 1.53A constitutes a true and complete list of all of the
Partnerships in which Greenwich has an interest. The copies of the Amended and
Restated Certificate of Incorporation and the Bylaws of Greenwich which have
been delivered to UNC are complete and correct and in full force and effect on
the date hereof.

                  Section 4.2. Capitalization.



                                       21
<PAGE>

                           (a) As of the date hereof, the authorized capital
stock of Greenwich consists of (i) 25,000,000 shares of Class A Stock, of which,
as of December 13, 1996, 6,971,213 shares of Greenwich Class A Stock were issued
and outstanding and 2,900 shares were held in treasury, (ii) 25,000,000 shares
of Class B Stock of which, as of December 13, 1996, 9,778,176 shares of Class B
Stock were issued and outstanding and 36,262 shares were held in treasury, (iii)
2,500,000 shares of preferred stock, par value $.01 per share, issuable in such
series and with such rights and designations as the Board of Directors of
Greenwich may, from time to time determine (the "Greenwich Preferred Stock"), of
which, as of September 30, 1996, no shares of Greenwich Preferred Stock were
issued and outstanding. All shares of Greenwich Class A Stock and Class B Stock
outstanding as of the date hereof are duly authorized, validly issued, fully
paid and nonassessable and were not issued in violation of, or subject to, any
preemptive rights. All publicly traded shares of Greenwich Class A Stock and
Greenwich Class B Stock have been approved for trading on Nasdaq.

                           (b) Except as set forth in Schedule 4.2, as of
September 30, 1996, there are no existing options, warrants, calls,
subscriptions or other rights or other agreements, commitments, understandings
or restrictions of any character relating to the issued or unissued capital
stock of Greenwich or any of the Greenwich Subsidiaries or obligating Greenwich
or any of its Subsidiaries to issue, transfer or sell or cause to be issued,
transferred or sold any shares of capital stock of, or other equity interests
in, Greenwich or of any of its Subsidiaries or securities convertible into or
exchangeable for such shares, or equity interests or obligating Greenwich or any
of its Greenwich Subsidiaries to grant, extend or enter into any such option,
warrant, call, subscription or other right, agreement, commitment, understanding
or restriction. As of the date of this Agreement, except as set forth in
Schedule 4.2, there are no contractual obligations of Greenwich or any of its
Subsidiaries to repurchase, redeem or otherwise acquire any shares of capital
stock of Greenwich or any of its Subsidiaries. Since September 30, 1996 and
prior to the date hereof, no shares of Greenwich Common Stock have been issued
except issuances of shares reserved for issuance as described above or otherwise
issued in the ordinary course of business.

                           (c) The authorized capital stock of the Merger
Subsidiary consists of 1,000 shares of common stock, no par value per share, of
which, as of the date hereof, 100 shares were issued and outstanding and owned
directly by Greenwich. Merger Subsidiary has been formed solely for the purpose
of engaging in the transactions contemplated by this Agreement and has engaged
in no business and incurred no liabilities other than in connection with this
Agreement and the transactions contemplated hereby.

                           (d) Except as contemplated by this Agreement or in
the Greenwich SEC Reports, there are, as of the date hereof, no shares of
capital stock of Greenwich or Merger Subsidiary authorized or outstanding, and
there are no outstanding subscriptions, options, conversion or exchange rights,
warrants or other agreements, claims or commitments obligating Greenwich or
Merger Subsidiary or any of their respective Subsidiaries to issue, transfer,
deliver or sell or issue additional shares of the capital stock of Greenwich or
Merger Subsidiary or obligating Greenwich or Merger Subsidiary or any of their
respective Subsidiaries to grant, extend or enter into any such agreement or
commitment.



                                       22
<PAGE>

                           Section 4.3. Authority Relative to this Agreement.
The execution, delivery and performance of this Agreement and of all of the
other documents and instruments required hereby by Greenwich are within the
corporate power of Greenwich. The execution and delivery of this Agreement and
the consummation of the transactions contemplated hereby have been duly
authorized by the Board of Directors of Greenwich and no other corporate
proceedings on the part of Greenwich are necessary to authorize this Agreement
or to consummate the transactions contemplated herein (other than the approval
of the transactions contemplated in this Agreement by a majority of the total
votes cast by holders of Greenwich Class A Stock at the Greenwich Stockholders
Meeting contemplated by the Joint Proxy Statement/Prospectus). This Agreement
and all of the other documents and instruments required hereby have been or will
be duly and validly executed and delivered by Greenwich and (assuming the due
authorization, execution and delivery hereof and thereof by UNC) constitute or
will constitute valid and binding agreements of Greenwich, enforceable against
Greenwich in accordance with their respective terms, except to the extent that
enforceability may be governed by equitable principles, applicable bankruptcy
laws, and other rights affecting creditors generally.

                  Section 4.4. Consents and Approvals; No Violations. Except as
set forth on Schedule 4.4 and except for (i) any applicable requirements of the
Securities Act, the Exchange Act, the HSR Act, Nasdaq and any applicable filings
under state securities, "Blue Sky" or takeover laws, (ii) the filing and
recordation of a certificate of merger as required by the DGCL and (iii) those
required filings, registrations, consents and approvals listed in Schedule 4.4,
no filing or registration with, and no permit, authorization, consent or
approval of, any public body or authority is necessary or required in connection
with the execution and delivery of this Agreement by Greenwich or for the
consummation by Greenwich of the transactions contemplated by this Agreement,
where the failure to obtain such permit, authorization, consent or approval
would have a Greenwich Material Adverse Effect. Assuming that all filings,
registrations, permits, authorizations, consents and approvals contemplated by
the immediately preceding sentence have been duly made or obtained, neither the
execution, delivery and performance of this Agreement nor the consummation of
the transactions contemplated hereby by Greenwich will (i) conflict with or
result in any breach of any provision of the Certificates of Incorporation,
bylaws, partnership or joint venture agreements or other organizational
documents of any of the Greenwich Companies, (ii) result in a violation or
breach of, or constitute (with or without due notice or lapse of time or both) a
default (or give rise to any right of termination, cancellation or acceleration)
under, or otherwise result in any diminution of any of the rights of the
Greenwich Companies with respect to, any of the terms, conditions or provisions
of any note, bond, mortgage, indenture, license, Contract or other instrument or
obligation to which any of the Greenwich Companies is a party or by which it or
any of them or any of their properties or assets may be bound, or (iii) violate
any order, writ, injunction, decree, statute, rule or regulation applicable to
any of the Greenwich Companies or any of their properties or assets, except, in
the case of subsections (ii) or (iii) above, for violations, breaches or
defaults that would not have a Greenwich Material Adverse Effect and that will
not prevent or delay the consummation of the transactions contemplated hereby.

                  Section 4.5. Reports. The Greenwich SEC Reports complied, as
of their respective dates of filing, in all material respects with all
applicable requirements of the Securities 




                                       23
<PAGE>

Act, the Exchange Act and the rules and regulations of the SEC. As of their
respective dates, none of such forms, reports or documents, including without
limitation any financial statements or schedules included therein, contained any
untrue statement of a material fact or omitted to state a material fact required
to be stated therein or necessary in order to make the statements therein not
misleading in light of the circumstances under which they were made. Each of the
balance sheets (including the related notes and schedules) included in the
Greenwich SEC Reports and in the Greenwich Fiscal 1996 Financial Statements
fairly presented the consolidated financial position of the Greenwich Companies
as of the respective dates thereof, and the other related financial statements
(including the related notes and schedules) included therein fairly presented
the results of operations and cash flows of the Greenwich Companies for the
respective fiscal periods or as of the respective dates set forth therein. Each
of the financial statements (including the related notes and schedules) included
in the Greenwich SEC Reports complied as to form with the applicable accounting
requirements and rules and regulations of the SEC. Each of the financial
statements (including the related notes and schedules) included in the Greenwich
SEC Reports and in the Greenwich Financial Statements was prepared in accordance
with GAAP consistently applied during the periods presented, except as otherwise
noted therein and subject to normal year-end and audit adjustments in the case
of any unaudited interim financial statements. Except for Greenwich, none of the
Greenwich Companies is required to file any forms, reports or other documents
with the SEC, Nasdaq, the NYSE or any other domestic securities exchange or
Governmental Authority with jurisdiction over United States securities laws.
Greenwich has timely filed all reports, registration statements and other
filings required to be filed by it with the SEC.

                  Section 4.6. Absence of Certain Events. Except as set forth in
the Greenwich SEC Reports filed before the date of this Agreement or in the 1996
fiscal year Greenwich Financial Statements, since September 30, 1996, none of
the Greenwich Companies has suffered any change in its business, financial
condition or results of operations that has had or could reasonably be expect to
have a Greenwich Material Adverse Effect. Except as disclosed in the Greenwich
SEC Reports or in the Greenwich Financial Statements, or as otherwise
specifically contemplated by this Agreement, there has not been since September
30, 1996: (i) any labor dispute that has had or is expected to have a Greenwich
Material Adverse Effect; (ii) any change in the accounting policies or practices
of Greenwich; or (iii) any damage, destruction or loss, whether covered by
insurance or not, which could reasonably be expect to have a Greenwich Material
Adverse Effect.

                  Section 4.7. Joint Proxy Statement/Prospectus. None of the
information with respect to the Greenwich Companies to be included in the Joint
Proxy Statement/Prospectus or the Registration Statement will, in the case of
the Joint Proxy Statement/Prospectus or any amendments thereof or supplements
thereto, at the time of the mailing of the Joint Proxy Statement/Prospectus or
any amendments thereof or supplements thereto, and at the time of the Greenwich
Stockholders Meeting, or, in the case of the Registration Statement, at the time
it becomes effective and at the Effective Time, contain any untrue statement of
a material fact or omit to state any material fact required to be stated therein
or necessary in order to make the statements therein, in light of the
circumstances under which they are made, not misleading. The Joint Proxy
Statement/Prospectus will comply as to form in all material respects with the




                                       24
<PAGE>

provisions of the Securities Act and the Exchange Act and the rules and
regulations promulgated thereunder, except that no representation is made by
Greenwich with respect to information supplied by UNC or any Affiliate of UNC
for inclusion in the Joint Proxy Statement/Prospectus.

                  Section 4.8. Litigation. Except as set forth in the Greenwich
SEC Reports, there is no action, suit, proceeding or, to the Knowledge of
Greenwich, investigation pending or, to the Knowledge of Greenwich, threatened
against or relating to any of the Greenwich Companies at law or in equity, or
before any federal, state, provincial, municipal or other governmental
department, commission, board, bureau, agency or instrumentality, whether in the
United States or otherwise, that is expected, in the reasonable judgment of
Greenwich, to have a Greenwich Material Adverse Effect or that seeks restraint,
prohibition, damages or other relief in connection with this Agreement or the
consummation of the transactions contemplated hereby.

                  Section 4.9. Compliance with Law. Except as set forth in the
Greenwich SEC Reports, the conduct of the Greenwich Businesses by the Greenwich
Companies and their use of their assets does not violate or conflict, and has
not violated or conflicted, with any Law, which violation or conflict could
reasonably be expected to have a Greenwich Material Adverse Effect.

                  Section 4.10. Fees and Expenses of Brokers and Others. None of
the Greenwich Companies (a) has had any dealings, negotiations or communications
with any broker or other intermediary in connection with the transactions
contemplated by this Agreement, (b) is committed to any liability for any
brokers' or finders' fees or any similar fees in connection with the
transactions contemplated by this Agreement, or (c) has retained any broker or
other intermediary to act on its behalf in connection with the transactions
contemplated by this Agreement, except that Greenwich has engaged Salomon to
represent it in connection with such transactions and shall pay all of Salomon's
fees and expenses in connection with such engagement.

                  Section 4.11. Accuracy of Information. Neither this Agreement
nor any other document provided by the Greenwich Companies or their employees or
agents to UNC in connection with the transactions contemplated herein contains
an untrue statement of a material fact or omits to state a material fact
necessary to make the statements contained therein not misleading.

                  Section 4.12. Absence of Undisclosed Liabilities. None of the
Greenwich Companies has, as of the date hereof, or will have, as of the
Effective Time, any liabilities or obligations of any kind, whether absolute,
accrued, asserted or unasserted, contingent or otherwise, that would be required
to be disclosed on a consolidated balance sheet of Greenwich prepared as of such
date in accordance with GAAP, except liabilities, obligations or contingencies
that were (a) reflected on or accrued or reserved against in the consolidated
balance sheet of Greenwich as of September 30, 1996, that is included in the
1996 Greenwich Financial Statements, or reflected in the notes thereto, or (b)
incurred after the date of such balance sheet in the ordinary course of business
and consistent with past practices and which, individually or in the aggregate,
will not have a Greenwich Material Adverse Effect. None of the Greenwich
Companies is a party to any Contract, or subject to any charter or other
corporate or partnership restriction, or subject to any judgment, order, writ,
injunction, decree, rule or regulation, which will have a Greenwich Material
Adverse Effect.


                                       25
<PAGE>




                                    ARTICLE V
                      REPRESENTATIONS AND WARRANTIES OF UNC

                  UNC represents and warrants to Greenwich as follows:

                  Section 5.1. Organization and Authority of the UNC Companies.
Each of the UNC Companies is duly organized, validly existing and in good
standing under the laws of its respective jurisdiction of organization. Each of
the UNC Companies has full corporate or partnership power to carry on its
respective business as it is now being conducted and to own, operate and hold
under lease its assets and properties as, and in the places where, such
properties and assets now are owned, operated or held. Each of the UNC Companies
is duly qualified as a foreign entity to do business, and is in good standing,
in each jurisdiction where the failure to be so qualified would have a UNC
Material Adverse Effect. Schedule 1.84 constitutes a true and complete list of
all of the Subsidiaries of UNC, and Schedule 1.53B constitutes a true and
complete list of all of the Partnerships in which UNC has an interest. The
copies of the Amended and Restated Certificate of Incorporation and the Bylaws
of UNC which have been delivered to Greenwich are complete and correct and in
full force and effect on the date hereof.

                  Section 5.2. Capitalization. The authorized capital stock of
UNC consists of: (a) 12,000,000 authorized shares of UNC Preferred Stock, $1.00
par value per share, of which, on the Agreement Date (i) 250,000 shares of
Series A Junior Participating Preferred Stock are authorized, none of which are
issued, (ii) 250,000 shares of Series B Preferred Stock are authorized, issued
and outstanding, and (iii) 250,000 shares of Series C Senior Cumulative
Preferred Stock are authorized, none of which are issued; and (b) 50,000,000
authorized shares of UNC Common Stock, of which, as at December 31, 1996 (i)
18,276,681 shares of UNC Common Stock are issued and outstanding, and (ii) an
aggregate of 3,571,429 shares of UNC Common Stock are reserved for issuance
pursuant to outstanding Stock Options granted under UNC Stock Option Plans
described on Schedule 5.2 . All shares of capital stock of UNC which are
outstanding as of the date hereof and which are reserved for issuance pursuant
to UNC Preferred Stock and UNC Stock Options, are duly authorized, and are, or
when issued will be, validly issued, fully paid and nonassessable, and are, or
when issued will not be, not subject to, nor were they issued in violation of,
any preemptive rights. Except as set forth in Schedule 5.2 and in this Section
5.2, there are no shares of capital stock of UNC authorized or outstanding, and
there are no subscriptions, options, conversion or exchange rights, warrants or
other agreements, claims or commitments of any nature whatsoever obligating UNC
or any UNC Subsidiary to issue, transfer, deliver or sell, or cause to be
issued, transferred, delivered or sold, additional shares of the capital stock
of UNC or any UNC Subsidiary or obligating UNC or any UNC Subsidiary to grant,
extend or enter into any such agreement or commitment. UNC has not, since
December 31, 1995, declared or paid any dividend on, or declared or made any
distribution with respect to, or authorized or effected any split-up or any
other recapitalization of, any of the UNC Common Stock, or directly or
indirectly redeemed, purchased or otherwise acquired any of its outstanding
capital stock or agreed to take any such action and will not take any such
action during the period between the date of this Agreement and the Effective
Time. Except as set forth on




                                       26
<PAGE>

Schedule 5.2, there are no outstanding options, warrants, subscriptions,
conversion or exchange rights, agreements, claims, commitments, or other rights
to purchase or acquire any capital stock of UNC or any of the other UNC
Companies, and there are no Contracts pursuant to which UNC or any of the other
UNC Companies is bound to sell or issue any shares of its capital stock, nor are
there any Contracts obligating UNC or any of the other UNC Companies to enter
into or grant any such securities or rights. All outstanding shares of UNC
Common Stock are duly listed for trading on the NYSE.

                           (b) Set forth in Schedule 1.84 is the name,
percentage ownership and jurisdiction of incorporation of each UNC or any UNC
Subsidiary. All the outstanding shares of capital stock of each UNC Subsidiary
have been validly issued and are fully paid, nonassessable and are not subject
to, nor were they issued in violation of, any preemptive rights. All outstanding
shares of capital stock of UNC Subsidiaries are owned, directly or indirectly,
by UNC, and, except as disclosed in Schedule 1.84 or in the UNC Financial
Statements, are owned free and clear of all liens, charges, encumbrances,
security interests, equities, options, restrictions on voting rights or rights
of disposition, and claims or third party rights of whatever nature. Except for
UNC Subsidiaries, UNC does not own, directly or indirectly, any capital stock or
other equity securities of any corporation, partnership, joint venture or other
entity or have any direct or indirect equity or ownership interest in any
corporation, partnership, joint venture or other entity, other than as disclosed
on Schedule 5.2 or Schedule 1.53B.

                  Section 5.3. Authority Relative to this Agreement. The
execution, delivery and performance of this Agreement and of all of the other
documents and instruments required hereby by UNC are within the corporate power
of UNC. The execution and delivery of this Agreement and the consummation of the
transactions contemplated hereby have been duly authorized by the Board of
Directors of UNC and no other corporate proceedings on the part of UNC are
necessary to authorize this Agreement or to consummate the transactions
contemplated herein (other than, with respect to the Merger, the approval of the
Certificate of Merger by a majority of the outstanding shares of UNC Common
Stock and UNC Series B Preferred Stock at the UNC Stockholders Meeting). This
Agreement and all of the other documents and instruments required hereby have
been or will be duly and validly executed and delivered by UNC and (assuming the
due authorization, execution and delivery hereof and thereof by Greenwich)
constitute or will constitute valid and binding agreements of UNC, enforceable
against UNC in accordance with their respective terms, except to the extent that
enforceability may be governed by equitable principles, applicable bankruptcy
laws, and other rights affecting creditors generally..

                           Section 5.4. Consents and Approvals; No Violations.
Except for (i) any applicable requirements of the Securities Act, the Exchange
Act, the HSR Act, and any applicable filings under state securities, "Blue Sky"
or takeover laws, (ii) the filing and recordation of a certificate of merger as
required by the DGCL and (iii) those required filings, registrations, consents
and approvals listed in Schedule 5.4, no filing or registration with, and no
permit, authorization, consent or approval of, any public body or authority is
necessary or required in connection with the execution and delivery of this
Agreement by UNC or for the consummation by UNC of the transactions contemplated
by this Agreement. Assuming that all filings, 




                                       27
<PAGE>

registrations, permits, authorizations, consents and approvals contemplated by
the immediately preceding sentence and the other provisions of this Agreement
have been duly made or obtained, neither the execution, delivery and performance
of this Agreement nor the consummation of the transactions contemplated hereby
by UNC will (i) conflict with or result in any breach of any provision of the
Certificates of Incorporation, bylaws, partnership or joint venture agreements
or other organizational documents of any of the UNC Companies, (ii) result in a
violation or breach of, or constitute (with or without due notice or lapse of
time or both) a default (or give rise to any right of termination, cancellation
or acceleration) under, or otherwise result in any diminution of any of the
rights of the UNC Companies with respect to, any of the terms, conditions or
provisions of any note, bond, mortgage, indenture, license, Contract or other
instrument or obligation to which any of the UNC Companies is a party or by
which it or any of them or any of their properties or assets may be bound, or
(iii) violate any order, writ, injunction, decree, statute, rule or regulation
applicable to any of the UNC Companies or any of their properties or assets
except, in the case of subsections (ii) or (iii) above, for violations, breaches
or defaults that would not have a UNC Material Adverse Effect and that will not
prevent or delay the consummation of the transactions contemplated hereby.

                  Section 5.5. Reports. The UNC SEC Reports complied, as of
their respective dates of filing, in all material respects with all applicable
requirements of the Securities Act, the Exchange Act and the rules and
regulations of the SEC. As of their respective dates, none of such forms,
reports or documents, including without limitation any financial statements or
schedules included therein, contained any untrue statement of a material fact or
omitted to state a material fact required to be stated therein or necessary in
order to make the statements therein not misleading in light of the
circumstances under which they were made. Each of the balance sheets (including
the related notes and schedules) included in the UNC SEC Reports fairly
presented the consolidated financial position of the UNC Companies as of the
respective dates thereof, and the other related financial statements (including
the related notes and schedules) included therein fairly presented the results
of operations and cash flows of the UNC Companies for the respective fiscal
periods or as of the respective dates set forth therein. Each of the financial
statements (including the related notes and schedules) included in the UNC SEC
Reports (i) complied as to form with the applicable accounting requirements and
rules and regulations of the SEC, and (ii) was prepared in accordance with GAAP
consistently applied during the periods presented, except as otherwise noted
therein and subject to normal year-end and audit adjustments in the case of any
unaudited interim financial statements. Except for UNC, none of the UNC
Companies is required to file any forms, reports or other documents with the
SEC, Nasdaq, the NYSE or any other foreign or domestic securities exchange or
Governmental Authority with jurisdiction over securities laws. UNC has timely
filed all reports, registration statements and other filings required to be
filed by it with the SEC.

                  Section 5.6. Absence of Certain Events. Except as set forth in
the UNC SEC Reports filed before the date of this Agreement or as otherwise
specifically disclosed in Schedule 5.6, none of the UNC Companies has suffered
any change in its business, financial condition, results of operations or
prospects that has had or will have a UNC Material Adverse Effect upon the UNC
Companies. Except as disclosed in the UNC SEC Reports or in Schedule 5.6, or as


                                       28
<PAGE>

otherwise specifically contemplated by this Agreement, there has not been: (i)
any entry into any agreement or understanding or any amendment of any agreement
or understanding between any of the UNC Companies on the one hand, and any of
their respective directors, officers or employees on the other hand, providing
for employment of any such director, officer or employee or any general or
material increase in the compensation, severance or termination benefits payable
or to become payable by any of the UNC Companies to any of their respective
directors, officers or employees (except, in each case, in the ordinary course
of business that are consistent with past practices and that, in the aggregate,
do not result in a material increase in benefits or compensation expense), or
any adoption of or increase in any bonus, insurance, pension or other employee
benefit plan, payment or arrangement (including, without limitation, the
granting of stock options or stock appreciation rights or the award of
restricted stock) made to, for or with any such director, officer or employee;
(ii) any labor dispute that has had or is expected to have a UNC Material
Adverse Effect; (iii) any entry by any of the UNC Companies into any material
commitment, agreement, license or transaction (including, without limitation,
any borrowing, capital expenditure, sale of assets or any mortgage, pledge, lien
or encumbrances made on any of the properties or assets of any of the UNC
Companies) other than in the ordinary and usual course of business; (iv) any
change in the accounting policies or practices of UNC; (v) any damage,
destruction or loss, whether covered by insurance or not, which has had or will
have a UNC Material Adverse Effect; or (vi) any agreement to do any of the
foregoing.

                  Section 5.7. Joint Proxy Statement/Prospectus. None of the
information with respect to the UNC Companies to be included in the Joint Proxy
Statement/Prospectus or the Registration Statement will, in the case of the
Joint Proxy Statement/Prospectus or any amendments thereof or supplements
thereto, at the time of the mailing of the Joint Proxy Statement/Prospectus or
any amendments thereof or supplements thereto, and at the time of the UNC
Stockholders Meeting, or, in the case of the Registration Statement, at the time
it becomes effective and at the Effective Time, contain any untrue statement of
a material fact or omit to state any material fact required to be stated therein
or necessary in order to make the statements therein, in light of the
circumstances under which they are made, not misleading. The Joint Proxy
Statement/Prospectus will comply as to form in all material respects with the
provisions of the Securities Act, the Exchange Act and the rules and regulations
promulgated thereunder, except that no representation is made by UNC with
respect to information supplied by Greenwich or any affiliate of Greenwich for
inclusion in the Joint Proxy Statement/Prospectus.

                  Section 5.8. Litigation. There is no action, suit, proceeding
or, to the Knowledge of UNC, investigation pending or, to the Knowledge of UNC,
threatened against or relating to any of the UNC Companies at law or in equity,
or before any federal, state, provincial, municipal or other governmental
department, commission, board, bureau, agency or instrumentality, whether in the
United States or otherwise, that is expected, in the reasonable judgment of UNC,
to have a UNC Material Adverse Effect upon the UNC Companies or that seeks
restraint, prohibition, damages or other relief in connection with this
Agreement or the consummation of the transactions contemplated hereby. To its
Knowledge, UNC has furnished to Greenwich, copies of all attorneys' audit
letters, and has furnished or will upon request furnish to 




                                       29
<PAGE>

Greenwich such other documents available to UNC as may be requested by Greenwich
in respect of pending litigation affecting the UNC Companies.

                  Section 5.9. Title to and Sufficiency of Assets.

                           (a) As of the date hereof the UNC Companies own, and
as of the Effective Time the UNC Companies will own, good and marketable title
to all of their assets constituting personal property which is material to any
of the UNC Subsidiaries or any UNC Business (excluding, for purposes of this
sentence, assets held under leases), free and clear of any and all mortgages,
liens, encumbrances, charges, claims, restrictions, pledges, security interests
or impositions, except as disclosed in UNC Financial Statements or in Schedule
5.9. Such assets, together with all assets held by the UNC Companies under
leases, include all tangible and intangible personal property, Contracts and
rights necessary or required for the operation of the UNC Businesses by the UNC
Companies in accordance with past practice.

                           (b) As of the date hereof the UNC Companies own, and
as of the Effective Time the UNC Companies will own, good and marketable title
to all of their Real Estate which is material to any of the UNC Subsidiaries or
any UNC Business (excluding, for purposes of this sentence, Real Estate leases),
free and clear of any and all mortgages, liens, encumbrances, charges, claims,
restrictions, pledges, security interests or impositions, except as disclosed in
UNC Financial Statements or in Schedule 5.9. Such Real Estate assets, together
with all Real Estate assets held by the UNC Companies under leases, are adequate
for the operation of the UNC Businesses by the UNC Companies as presently
conducted. The leases to all Real Estate occupied by UNC which is material to
the operation of the UNC Businesses are in full force and effect and no event
has occurred which with the passage of time, the giving of notice, or both,
would constitute a default or event of default by any of the UNC Companies or,
to the Knowledge of UNC, any other Person who is a party signatory thereto.




                                       30
<PAGE>

                  Section 5.10. Contracts.

                           (a) Before the Agreement Date UNC has provided
Greenwich with access to, and upon Greenwich's request UNC shall at all times
subsequent to the Agreement Date furnish Greenwich with true and correct copies
of, all of the Contracts to which any UNC Company is a party that constitute:
(i) a lease of any interest in any real property; (ii) a lease of any personal
property with aggregate annual rental payments in excess of $100,000; (iii) an
option to acquire or lease any interest in real property or a right of first
refusal with respect thereto; (iv) an agreement to purchase or sell a capital
asset or an interest in any business entity for a price in excess of $100,000 or
a right of first refusal with respect thereto; (v) an agreement relating to the
borrowing or lending of money or the purchase or sale of securities; (vi) a
guaranty, contribution agreement or other agreement that includes any
indemnification, contribution or support obligation; (vii) an agreement limiting
in any material respect the ability of any UNC Company to compete in any line of
business or with any person; (viii) a customer supply or services agreement to
which any of the UNC Companies is a party or by which any of the UNC Companies
is bound pursuant to which the total amount payable (or reasonably expected to
be payable) to the UNC Companies in any calendar year exceeds $250,000 (a
"Material Customer Agreement"); (ix) an employment or consulting agreement to
which any of the UNC Companies is a party or by which any of the UNC Companies
is bound; and (ix) any other agreement involving an amount over its term in
excess of $250,000 (collectively, a "UNC Material Contract"). In addition to the
UNC Material Contracts, UNC shall furnish Greenwich with true and complete
copies of all other Contracts which Greenwich shall reasonably request.

                           (b) With respect to UNC Material Contracts, except
where a breach of the warranties contained in this Section 5.10 would not have a
UNC Material Adverse Effect: (i) the UNC Companies have performed and, to the
Knowledge of UNC, every other party has performed, each material term, covenant
and condition of each of the Material Contracts to which any UNC Company is a
party that is to be performed by any of them at or before the date hereof, (ii)
all of such UNC Material Contracts are in full force and effect and no event has
occurred which, with the passage of time or the giving of notice or both, would
constitute a default, event of default or other breach by UNC or applicable UNC
Subsidiary party thereto which would entitle the other Person who is a signatory
to such UNC Material Contract to terminate the same or declare a default or
event of default thereunder; (iii) neither UNC or any UNC Subsidiary has UNC
Knowledge of that the other Person to any such Material Contract intends to
terminate or amend such UNC Material Contract in any respect, (iv) UNC or the
applicable UNC Subsidiary party to such UNC Material Contract maintain good
business relationships with the other Person to such UNC Material Contract, and
(v) UNC or the applicable UNC Subsidiary party to such UNC Material Contract has
no reason to believe that the other Person to any such UNC Material Contract
does not intend to continue to conduct business with UNC or such UNC Subsidiary
upon the expiration of the stated term of such UNC Material Contract.

                  Section 5.11. Labor Matters.


                                       31
<PAGE>

                           (a) Except as set forth in Schedule 5.11, with
respect to employees of the UNC Companies: (i) to the Knowledge of UNC, no
senior executive, key employee or group of employees has any plans to terminate
employment with any of the UNC Companies; (ii) there is no unfair labor practice
charge or complaint against any UNC Company pending or, to the Knowledge of UNC,
threatened before the National Labor Relations Board or any other comparable
authority; (iii) there is no demand for recognition made by any labor
organization or petition for election filed with the National Labor Relations
Board or any other comparable authority, (iv) no grievance or any arbitration
proceeding arising out of or under collective bargaining agreements is pending
and, to the Knowledge of UNC, no claims therefor have been threatened; (v) the
consummation of the Merger and related transactions contemplated by this
Agreement will not give rise to termination of any existing collective
bargaining agreement or permit any labor organization to reopen negotiations in
respect of wages, hours or working conditions under any of such existing
collective bargaining agreements; and (vi) there is no litigation, arbitration
proceeding, governmental investigation, administrative charge, citation or
action of any kind pending or, to the Knowledge of UNC, proposed or threatened
against any UNC Company relating to employment, employment practices, terms and
conditions of employment or wages and hours.

                           (b) Except as identified in Schedule 5.11, no UNC
Company has any collective bargaining relationship or duty to bargain with any
Labor Organization (as such term is defined in Section 2(5) of the National
Labor Relations Act, as amended), and no UNC Company has recognized any labor
organization as the collective bargaining representative of any of its
employees.

                  Section 5.12. Employee Benefit Plans.

                           (a) Schedule 5.12 sets forth a true and complete list
of each Employee Plan within the meaning of Section 4001 of ERISA, for the
benefit of any employee or former employee of any of the UNC Companies or any
ERISA Affiliate. Schedule 5.12 sets forth each of the Employee Plans that is an
"employee benefit plan," as that term is defined in Section 3(3) of ERISA (the
"ERISA Plans").

                           (b) With respect to each Employee Plan, UNC has
heretofore delivered or will deliver to Greenwich upon request true and complete
copies of each of the following documents:

                                    (i) a copy thereof;

                                    (ii) a copy of the most recent annual report
and actuarial report, if required under ERISA and the most recent report
prepared with respect thereto in accordance with Statement of Financial
Accounting Standards No. 87, Employer's Accounting for Pensions;

                                    (iii) a copy of the most recent Summary
Employee Plan Description required under ERISA with respect thereto;



                                       32
<PAGE>

                                    (iv) if the Employee Plan is funded through
a trust or any third party funding vehicle, a copy of the trust or other funding
agreement and the latest financial statements thereof; and

                                    (v) the most recent determination letter
received from the Internal Revenue Service with respect to each Employee Plan
intended to qualify under Section 401 of the Code.

                           (c) Except as set forth in Schedule 5.12, no Employee
Plan (or other employee benefit plan, program, agreement or arrangement to which
UNC, any UNC Subsidiary or any ERISA Affiliate made, or was required to make,
contributions during the five (5) year period ending on the Closing Date) is
subject to Title IV of ERISA.

                           (d) Except as set forth in Schedule 5.12, neither
UNC, any UNC Subsidiary nor any ERISA Affiliate, nor any ERISA Plan, nor any
trust created thereunder, nor, to UNC's Knowledge, any trustee or administrator
thereof has engaged in a transaction in connection with which UNC, any UNC
Subsidiary nor any ERISA Affiliate, any ERISA Plan, any such trust, or any
trustee or administrator thereof, or any party dealing with any ERISA Plan or
any such trust could be subject to either a civil penalty assessed pursuant to
Section 409 or 502(i) of ERISA or a tax imposed pursuant to Section 4975 or 4976
of the Code, which, in either case, if sustained would have a UNC Material
Adverse Effect.

                           (e) Except as set forth in Schedule 5.12, no ERISA
Employee Plan or any trust established thereunder has incurred any "accumulated
funding deficiency" (as defined in Section 302 of ERISA and Section 412 of the
Code), whether or not waived, as of the last day of the most recent fiscal year
of each ERISA Plan ended prior to the Closing Date; and all contributions
required to be made with respect thereto (whether pursuant to the terms of any
ERISA Plan or otherwise) on or prior to the Closing Date have been timely made.

                           (f) Except as set forth in Schedule 5.12, no ERISA
Plan is a "multiemployer pension plan," as defined in Section 3(37) of ERISA,
nor is any ERISA Plan a plan described in Section 4063(a) of ERISA.

                           (g) Except as set forth in Schedule 5.12, each
Employee Plan has been operated and administered in all material respects in
accordance with its terms and applicable law, including but not limited to ERISA
and the Code.

                           (h) Except as set forth in Schedule 5.12, each ERISA
Plan intended to be "qualified" within the meaning of Section 401(a) of the Code
is so qualified and the trusts maintained thereunder are exempt from taxation
under Section 501(a) of the Code.

                           (i) Except as set forth in Schedule 5.12, no Employee
Plan provides benefits, including without limitation death or medical benefits
(whether or not insured), with respect to current or former employees of UNC or
an ERISA Affiliate beyond their retirement or other termination of service
(other than (i) coverage mandated by applicable law or (ii) death benefits or
retirement benefits under any "employee pension plan," as that term is defined
in Section 3(2) of ERISA).


                                       33
<PAGE>



                           (j) Except as set forth in Schedule 5.12, the
consummation of the transactions contemplated by this Agreement will not (i)
entitle any current or former employee or officer of UNC, any UNC Subsidiary or
any ERISA Affiliate to severance pay, unemployment compensation or any other
payment, except as expressly provided in this Agreement or (ii) accelerate the
time of payment or vesting, or increase the amount of compensation due any such
employee or officer, whether pursuant to any Employee Plan or any employment
agreement with such existing or former officer or employee of UNC, any UNC
Subsidiary or any ERISA Affiliate.

                           (k) Except as set forth in Schedule 5.12, there are
no pending, or to UNC's Knowledge, threatened or anticipated claims by or on
behalf of any Employee Plan, by any employee or beneficiary covered under any
such Employee Plan, or otherwise involving any such Employee Plan (other than
routine claims for benefits).

                  Section 5.13. Tax Matters.

                           (a) Definitions. As used in this Agreement:

                                    (i) "Tax Ruling" means a written ruling of a
taxing authority relating to Taxes.

                                    (ii) "Closing Agreement" means a written and
legally binding agreement with a taxing authority relating to Taxes.

                           (b) Representations. Except for representations and
warranties made with respect to federal and state income Taxes, all
representations and warranties made in this Section 5.13(b) with respect to
Taxes are made to the best Knowledge of UNC. Subject to the foregoing, and
except as set forth in Schedule 5.13:

                                    (i) Filing of Tax Returns. UNC and each of
UNC Subsidiaries have filed all Tax Returns required to be filed by each of them
and such Tax Returns are in all material respects true, complete and correct and
filed on a timely basis.

                                    (ii) Payment of Taxes. UNC and each of UNC
Subsidiaries have, within the time and in the manner prescribed by law, paid all
Taxes that are currently due and payable, except for those contested in good
faith and for which adequate reserves have been taken.

                                    (iii) Tax Liens. There are no tax liens upon
the assets of UNC or of any of UNC Subsidiaries except for statutory liens for
current Taxes not yet due.

                                    (iv) Withholding Taxes. UNC and each of UNC
Subsidiaries have complied in all material respects with the provisions of the
Code relating to the withholding of Taxes, as well as similar provisions under
any other laws, and have, within the time and in the manner prescribed by law,
withheld and paid over to the proper governmental authorities all amounts
required.




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<PAGE>

                                    (v) Extensions of Time for Filing. Neither
UNC nor any of UNC Subsidiaries has requested any extension of time within which
to file any Tax Return, which Tax Return has not since been filed.

                                    (vi) Waivers of Statute of Limitations.
Neither UNC nor any of UNC Subsidiaries has executed any outstanding waivers or
comparable consents regarding the application of the statute of limitations with
respect to any Taxes or Tax Returns.

                                    (vii) No Deficiencies. The statute of
limitations for the assessment of any federal income Taxes has expired for all
income Tax Returns of UNC and of each of UNC Subsidiaries or such income Tax
Returns have been examined by the Internal Revenue Service for all periods. No
deficiency for any income Taxes has been proposed, asserted or assessed against
UNC or any of UNC Subsidiaries which has not been resolved and paid in full.
There are no deficiencies for state income Taxes which individually, or in the
aggregate, would have a UNC Material Adverse Effect.

                                    (viii) Audit, Administrative and Court
Proceedings. No audits or other administrative proceedings or court proceedings
are presently pending with regard to any Taxes or Tax Returns of UNC or any of
UNC Subsidiaries.

                                    (ix) Powers of Attorney. No power of
attorney currently in force has been granted by UNC or any of UNC Subsidiaries
concerning any Taxes or Tax Returns.

                                    (x) Tax Rulings. Neither UNC nor any of UNC
Subsidiaries has received a Tax Ruling or entered into a Closing Agreement with
any taxing authority that would have a UNC Material Adverse Effect.

                                    (xi) Tax Sharing Agreements. Neither UNC nor
any UNC Subsidiary is a party to any agreement relating to allocating or sharing
of Taxes which has not been disclosed on its Tax Returns.

                  Section 5.14 Insurance and Reinsurance. Schedule 5.14 sets
forth all insurance and reinsurance policies relating to UNC and any UNC
Subsidiary. UNC and each UNC Subsidiary has given any and all notices and made
any and all payments required to maintain such policies in full force and
effect. Except as set forth in Schedule 5.14: neither UNC nor any UNC Subsidiary
has received notice of default under any such policy, and has not received
written notice or, to the knowledge of UNC or any UNC Subsidiary, oral notice of
any pending or threatened termination or cancellation, coverage limitation or
reduction or material premium increase with respect to such policy.

                  Section 5.15 Officers' and Directors' Liability Insurance. UNC
has heretofore delivered to Greenwich a copy of its officers' and directors'
liability insurance policy.





                                       35
<PAGE>

                  Section 5.16. Compliance with Law. The conduct of the UNC
Businesses of the UNC Companies and their use of their assets does not violate
or conflict, and has not violated or conflicted, with any Law, which violation
or conflict could have a UNC Material Adverse Effect.

                  Section 5.17 Environmental Matters. The conduct of the UNC
Businesses of the UNC Companies, and their ownership, use or occupancy of any
properties for which the UNC Companies have liability under Environmental Laws,
does not violate or conflict, and has not violated or conflicted, with any
Environmental Law, which violation or conflict could have a UNC Material Adverse
Effect.

                  Section 5.18. Transactions With Affiliates. For purposes of
this Section, the term "Affiliate" means (a) any holder of 2% or more of the
voting securities of UNC, (b) any director, officer or senior executive of the
UNC Companies, (c) any person, firm or corporation that directly or indirectly
controls, is controlled by or is under common control with any of the UNC
Companies or (d) any member of the immediate family of any of such persons.
Except as set forth in Schedule 5.18 or in the UNC SEC Reports, since December
31, 1995, the UNC Companies have not, in the ordinary course of business or
otherwise, (a) purchased, leased or otherwise acquired any material property or
assets or obtained any material services from, (b) sold, leased or otherwise
disposed of any material property or assets or provided any material services to
(except with respect to remuneration for services rendered in the ordinary
course of business as a director, officer or employee of one or more of the UNC
Companies), (c) entered into or modified in any manner any Contract with, or (d)
borrowed any money from, or made or forgiven any loan or other advance (other
than expense or similar advances made in the ordinary course of business) to,
any Affiliate. Except as set forth in Schedule 5.18 or in the UNC SEC Reports,
(a) the Contracts of the UNC Companies do not include any material obligation or
commitment between any of the UNC Companies and any Affiliate, (b) the assets of
the UNC Companies do not include any receivable or other obligation or
commitment from an Affiliate to any of the UNC Companies and (c) the liabilities
of the UNC Companies do not include any payable or other obligation or
commitment from any of the UNC Companies to any Affiliate. To the Knowledge of
UNC and except as set forth in Schedule 5.18 or in the UNC SEC Reports, no
Affiliate of any of the UNC Companies is a party to any Contract with any
customer or supplier of UNC that affects in any material manner the business,
financial condition or results of operation of any of the UNC Companies.

                  Section 5.19. Fees and Expenses of Brokers and Others. None of
the UNC Companies (a) has had any dealings, negotiations or communications with
any broker or other intermediary in connection with the transactions
contemplated by this Agreement, (b) is committed to any liability for any
brokers' or finders' fees or any similar fees in connection with the
transactions contemplated by this Agreement or (c) has retained any broker or
other intermediary to act on its behalf in connection with the transactions
contemplated by this Agreement, except that UNC has engaged J.P. Morgan and
Fieldstone Partners ("Fieldstone") to represent it in connection with such
transactions, and shall pay all of J.P. Morgan's and Fieldstone's fees and
expenses in connection with such engagement, up to a maximum amount of fees not
to exceed 


                                       36
<PAGE>

$4.0 million in the aggregate. Greenwich shall have no responsibility for any of
such fees or expenses.

                  Section 5.20. Accuracy of Information. Neither this Agreement
nor any other document provided by the UNC Companies or their employees or
agents to Greenwich in connection with the transactions contemplated herein
contains an untrue statement of a material fact or omits to state a material
fact necessary to make the statements contained therein not misleading.

                  Section 5.21. Absence of Undisclosed Liabilities. None of the
UNC Companies have, as of the date hereof, or will have, as of the Effective
Time, any liabilities or obligations of any kind, whether absolute, accrued,
asserted or unasserted, contingent or otherwise, that would be required to be
disclosed on a consolidated balance sheet of UNC prepared as of such date, in
accordance with GAAP, except liabilities, obligations or contingencies that were
(a) reflected on or accrued or reserved against in the consolidated balance
sheet of UNC as of September 30, 1996, included in the UNC SEC Reports or
reflected in the notes thereto, or (b) incurred after the date of such balance
sheet in the ordinary course of business and consistent with past practices and
which, individually or in the aggregate, would not have a UNC Material Adverse
Effect. None of the UNC Companies is a party to any Contract, or subject to any
charter or other corporate or partnership restriction, or subject to any
judgment, order, writ, injunction, decree, rule or regulation, which will have a
UNC Material Adverse Effect.

                                   ARTICLE VI
                            COVENANTS AND AGREEMENTS

                  Section 6.1. Conduct of the Businesses of UNC and Greenwich.

                           (a) UNC Companies. Except as otherwise expressly
provided in this Agreement, during the period from the date of this Agreement to
the Effective Time, the UNC Companies will conduct their respective operations
according to their ordinary and usual course of business and consistent with
past practice, and will use their best efforts to preserve intact their business
organizations, to keep available the services of their officers and employees
and to maintain satisfactory relationships with licensors, licensees, suppliers,
contractors, distributors, customers and others having material business
relationships with them. Without limiting the generality of the foregoing, and
except as otherwise expressly provided in this Agreement, before the Effective
Time, none of the UNC Companies will, without the prior written consent of
Greenwich:

                                    (i) amend its Articles or Certificate of
Incorporation, bylaws, partnership or joint venture agreements or other
organizational documents;

                                    (ii) authorize for issuance or issue, sell
or deliver (whether through the issuance or granting of options, warrants,
commitments, subscriptions, rights to purchase or otherwise) any stock of any
class or any other securities or interests, including, 




                                       37
<PAGE>

without limitation, any additional shares of UNC Common Stock or shares of UNC
Preferred Stock, except as may be required by the existing terms of the Series B
Preferred Stock Agreement, any UNC Employee Plan, or any issued and outstanding
UNC Stock Options disclosed pursuant to this Agreement;

                                    (iii) split, combine or reclassify any
shares of its capital stock or declare, set aside or pay any dividend or other
distribution (whether in cash, stock or property or any combination thereof) in
respect of its capital stock, or redeem or otherwise acquire any of its
securities or any securities of their respective Subsidiaries and Partnerships;

                                    (iv) (A) except in the ordinary course of
business, incur or assume any Indebtedness not currently outstanding (provided,
that except for additional advances used for general working capital purposes
which are currently permitted under existing senior secured lines of credit, UNC
shall not incur any additional Indebtedness for money borrowed), (B) except in
the ordinary course of business, assume, guarantee, endorse or otherwise become
liable or responsible for the obligations of any person, other than a Subsidiary
or Partnership, (C) make any loans, advances or capital contributions to, or
investments in, any other person (other than customary loans or advances to
employees and non-affiliated customers in accordance with past practice), (D)
except in the ordinary course of business, enter into any Material Contract, or
alter, amend, modify or exercise any option under any existing Material
Contract, (E) enter into any other Contract, or alter, amend, modify or exercise
any option under any existing Contract (other than a Material Contract), except
than in the ordinary course of business or in connection with the transactions
contemplated by this Agreement, or (F) make or commit to any single capital
expenditure which is in excess of $100,000 or capital expenditures which are, in
the aggregate, in excess of $1.0 million, except for capital expenditures (x)
required to be made under Contracts entered into before the Agreement Date, and
(y) which are reflected in the 1997 UNC capital budget previously furnished to
Greenwich and (z) which are legally required to be made under such Contracts;

                                    (v) enter into, adopt or amend (except as
may be required by Law or as provided in this Agreement) any bonus, profit
sharing, compensation, severance, termination, stock option, stock appreciation
right, restricted stock, pension, retirement, deferred compensation, employment,
consulting, severance or other employee benefit agreements, trusts, plans, funds
or other arrangements for the benefit or welfare of any director, officer or
employee, or increase in any manner the compensation or fringe benefits of any
director, officer or employee or pay any benefit not required by any existing
plan or arrangement (including, without limitation, the granting of stock
options, stock appreciation rights, shares of restricted stock or performance
units) or enter into any Contract to do any of the foregoing (except, in each of
the above instances, for normal increases or other payments in the ordinary
course of business that are consistent with past practices and that, in the
aggregate, do not result in a material increase in benefits or compensation
expense; provided, that UNC shall give Greenwich 72 hours notice before
effecting any change in compensation for any employee whose current annual base
compensation equals or exceeds $100,000, even if Greenwich's approval shall not
be required hereunder);



                                       38
<PAGE>

                                    (vi) except as otherwise permitted in this
Section 6.1, acquire, sell, lease or dispose of any Real Estate or other
material assets, other than inventory in the ordinary course of business;

                                    (vii) accelerate the collection of accounts
receivable, delay the payment of accounts payable or take any action with
respect to credit, collection and fiscal policies and practices, other than in
the ordinary course of business and in a manner consistent with past practice
with respect to accounting policies or practices;

                                    (viii) make any material Tax election or
settle or compromise any material federal, state, local or foreign income Tax
liability;

                                    (ix) except for the payment of professional
fees, pay, discharge or satisfy any material claims, liabilities or obligations
(absolute, accrued or unasserted, contingent or otherwise), other than the
payment, discharge or satisfaction in the ordinary course of business of
liabilities reflected or reserved against in UNC's most recent quarterly or
annual financial statements or incurred in the ordinary course of business since
the date thereof; or

                                    (x) hold any meeting of its stockholders
except to the extent required by the request of the stockholders entitled to
call a meeting under UNC's bylaws or the DGCL;

                                    (xi) take any action that would or is
reasonably likely to result in any of the covenants and agreements set forth in
this Article VI or any of the conditions set forth in Article VII not being
satisfied as of the Closing Date; or

                                    (xii) agree in writing or otherwise to take
any of the foregoing actions.


                           (b) Greenwich Companies. Except as otherwise
expressly provided in this Agreement, during the period from the date of this
Agreement to the Effective Time, the Greenwich Companies will conduct their
respective operations according to their ordinary and usual course of business
and consistent with past practice, and will use their best efforts to preserve
intact their business organizations, to keep available the services of their
officers and employees and to maintain satisfactory relationships with
licensors, licensees, suppliers, contractors, distributors, customers and others
having material business relationships with them. Without limiting the
generality of the foregoing, and except as otherwise expressly provided in this
Agreement, before the Effective Time, none of the Greenwich Companies will,
without the prior written consent of UNC:

                                    (i) amend its Amended and Restated Articles
of Incorporation or Bylaws;

                                    (ii) authorize for issuance or issue, sell
or deliver (whether through the issuance or granting of options, warrants,
commitments, subscriptions, rights to purchase or otherwise) any stock of any
class or any other securities or interests, except (A) as 




                                       39
<PAGE>

required by the terms of any Greenwich Employee Plan or stock option or stock
purchase plan existing on the date hereof, (B) any options, warrants, rights or
other securities outstanding as of the date hereof and disclosed pursuant to
this Agreement, or (C) issuances of any shares of Greenwich Class A Common Stock
or Class B Stock for cash or in connection with the acquisition of any
securities, assets or businesses of any Person other than UNC;

                                    (iii) split, combine or reclassify any
shares of its capital stock or declare, set aside or pay any dividend or other
distribution (whether in cash, stock or property or any combination thereof) in
respect of its capital stock;

                                    (iv) take any action other than in the
ordinary course of business and in a manner consistent with past practice with
respect to accounting policies or practices;

                                    (v) hold any meeting of its stockholders
except to the extent required by the request of the stockholders entitled to
call a meeting under Greenwich's Bylaws or the DGCL;

                                    (vi) take any action that would or is
reasonably likely to result in any of the covenants and agreements set forth in
this Article VI or any of the conditions set forth in Article VII not being
satisfied as of the Closing Date; or

                                    (vii) agree in writing or otherwise to take
any of the foregoing actions.

                           (c) By UNC and Greenwich. Greenwich and UNC agree
that, during the period from the Agreement Date to the Effective Time: (i) they
will cause representatives of their respective companies to meet, upon request,
to discuss the operations and business prospects of their companies; (ii)
mutually cooperate to enable representatives of their companies to have full and
prompt access to all financial statements, accounting work papers, documents,
agreements, and other instruments which may be reasonably requested, and (iii)
UNC will promptly advise Greenwich of the occurrence of any UNC Material Adverse
Effect with respect to the UNC Companies, and Greenwich will promptly advise UNC
of the occurrence of any Greenwich Material Adverse Effect with respect to the
Greenwich Companies.

                  Section 6.2. No Solicitation. UNC agrees that it shall not,
after the date hereof and before the Effective Time, directly or indirectly,
through any officer, director, employee, agent or otherwise, solicit, initiate
or encourage submission of proposals or offers from any person relating to any
acquisition or purchase of all or (other than in the ordinary course of
business) a substantial portion of the assets of, or any equity interest in, any
UNC Company or any business combination involving any UNC Company or, except to
the extent required by fiduciary obligations under applicable Law as advised by
counsel, participate in any negotiations regarding, or furnish to any other
person any information with respect to, or otherwise cooperate in any way with,
or assist or participate in, facilitate or encourage, any effort or attempt by
any other person to do or seek any of the foregoing. UNC shall promptly advise
Greenwich if any such proposal or offer, or any inquiry or contact with any
person with respect thereto, is made, shall promptly inform Greenwich of all the
terms and conditions thereof, and shall furnish to 




                                       40
<PAGE>

Greenwich copies of any such written proposal or offer and the contents of any
communications in response thereto. UNC shall not waive any provisions of any
"standstill" agreements between UNC and any party, except to the extent that
such waiver is, as advised by counsel, required by fiduciary obligations under
applicable Law.

                  Section 6.3. The Registration Statement; Listing.

                           (a) UNC and Greenwich shall, as soon as practicable
following the execution of this Agreement, file with the SEC a draft of the
Joint Proxy Statement/Prospectus (in a form mutually agreeable to UNC and
Greenwich) as preliminary proxy materials under the Exchange Act, and shall seek
confidential treatment with respect thereto. UNC and Greenwich shall cooperate
to respond promptly to any comments made by the SEC with respect thereto.

                           (b) Upon resolution of any SEC comments with respect
to the draft Joint Proxy Statement/Prospectus, or at such other time as may be
mutually determined by the parties hereto, Greenwich shall file the Registration
Statement (including the then-current draft of the Joint Proxy
Statement/Prospectus) with the SEC, and shall:

                                    (i) after consultation with UNC, respond
promptly to any comments made by the SEC with respect thereto; provided,
however, that Greenwich will not file any amendment or supplement to the
Registration Statement without first furnishing to UNC a copy thereof for its
review and will not file any such proposed amendment or supplement to which UNC
reasonably and promptly objects;

                                    (ii) use its best efforts to cause the
Registration Statement to become effective under the Securities Act as soon as
practicable, and Greenwich and UNC shall cause the Joint Proxy
Statement/Prospectus to be mailed to their respective stockholders at the
earliest practicable time after effectiveness of the Registration Statement;

                                    (iii) cause the registration or
qualification of the Greenwich Class B Stock to be issued upon conversion of
shares of UNC Common Stock in accordance with the Certificate of Merger under
the state securities or "Blue Sky" laws of each state of residence of a record
holder of UNC Common Stock as reflected in its stock transfer ledger;

                                    (iv) promptly advise UNC (A) when the
Registration Statement becomes effective, (B) when, before the Effective Time,
any amendment to the Registration Statement shall be filed or become effective,
(C) of the issuance by the SEC of any stop order suspending the effectiveness of
the Registration Statement or the institution or threatening of any proceeding
for that purpose and (D) of the receipt by Greenwich of any notification with
respect to the suspension of the registration or qualification of Greenwich
Class B Stock for sale in any jurisdiction or the institution or threatening of
any proceeding for that purpose;

                                    (v) use its best efforts to prevent the
issuance of any such stop order and, if issued, to obtain as soon as possible
the withdrawal thereof; and

                                       41
<PAGE>

                                    (vi) use its best efforts to cause the
shares of Greenwich Class B Stock to be issued upon conversion of shares of UNC
Common Stock in accordance with the Certificate of Merger to be approved for
inclusion upon notice of issuance in Nasdaq.

If, at any time when the Joint Proxy Statement/Prospectus is required to be
delivered under the Securities Act or the Exchange Act, any event occurs as a
result of which the Joint Proxy Statement/Prospectus as then amended or
supplemented would include any untrue statement of a material fact or omit to
state any material fact necessary to make the statements contained therein, in
light of the circumstances under which they were made, not misleading, or if it
shall be necessary to amend the Registration Statement or supplement the Joint
Proxy Statement/Prospectus to comply with the Securities Act or the Exchange Act
or the respective rules thereunder, UNC and Greenwich shall cooperate to permit
Greenwich promptly to prepare and file with the SEC, subject to clause (a) of
this Section 6.3, an amendment or supplement that will correct such statement or
omission or effect such compliance.

                  Section 6.4. Access to Information; Confidentiality Agreement.

                           (a) Between the date of this Agreement and the
Effective Time, the parties hereto will give one another and their authorized
representatives reasonable access during normal business hours to all plants,
offices, warehouses and other facilities and to all books and records of one
another, will permit one another to make such inspections as each may reasonably
request and will cause their officers and those of their Subsidiaries and
Partnerships to furnish such financial and operating data and other information
with respect to their businesses and properties as may from time to time
reasonably be requested. Subject to Section 6.7, all such information shall be
kept confidential in accordance with the Confidentiality Agreement.

                           (b) Notwithstanding the execution of this Agreement,
the Confidentiality Agreement shall remain in full force and effect through the
Effective Time, at which time the Confidentiality Agreement shall terminate and
be of no further force and effect. Each party hereto hereby waives the
provisions of the Confidentiality Agreement as and to the extent necessary to
permit the solicitation of votes of the stockholders of Greenwich and UNC
pursuant to the Joint Proxy Statement/Prospectus and to permit consummation of
the transactions contemplated hereby. Each party further acknowledges that the
Confidentiality Agreement shall survive any termination of this Agreement
pursuant to Section 11.1.

                  Section 6.5. Best Efforts. Subject to the terms and conditions
herein provided and subject to fiduciary obligations under applicable Law as
advised by counsel, each of the parties hereto agrees to use its best efforts to
take, or cause to be taken, all action, and to do, or cause to be done, all
things necessary, proper and advisable under applicable Law, to consummate and
make effective the transactions contemplated by this Agreement. In case at any
time after the Effective Time any further action is necessary or desirable to
carry out the purposes of this Agreement, the proper officers and directors of
each party to this Agreement shall take all such necessary action. Greenwich and
UNC shall execute any additional instruments necessary to consummate the
transactions contemplated hereby.


                                       42
<PAGE>

                  Section 6.6. Consents. UNC and Greenwich shall each use its
best efforts to obtain consents of all third parties and governmental
authorities necessary to the consummation of the transactions contemplated by
this Agreement.

                  Section 6.7. Public Announcements. The parties hereto have
agreed upon the text of a joint press release announcing, among other things,
the execution of this Agreement, which joint press release shall be disseminated
promptly following the execution hereof. UNC and Greenwich will consult with
each other before issuing any additional press release or otherwise making any
additional public statement with respect to this Agreement, the Certificate of
Merger, the Merger or the transactions contemplated herein and shall not issue
any such press release or make any such public statement before such
consultation or as to which the other party promptly and reasonably objects,
except as may be required by Law in the written opinion of such party's counsel
or by obligations pursuant to any listing agreement with any national securities
exchange or inter-dealer quotation system, in which case the party proposing to
issue such press release or make such public announcement shall use its best
efforts to consult in good faith with the other party before issuing any such
press release or making any such public announcements.

                  Section 6.8. Affiliates. UNC shall use its best efforts to
cause each principal executive officer, each director and each other person who
may be deemed to be an "affiliate," for purposes of Rule 145 under the
Securities Act, of UNC to deliver to Greenwich at or before the Effective Time a
written agreement (substantially in the form of Schedule 6.8) to the effect that
such person will not offer to sell, sell or otherwise dispose of any shares of
Greenwich Class B Stock issued in the Merger, except, in each case, pursuant to
an effective registration statement or in compliance with Rule 145, as amended
from time to time, or in a transaction which, in the opinion of legal counsel
satisfactory to Greenwich, is exempt from the registration requirements of the
Securities Act.

                  Section 6.9. Cashless Exercise of Stock Options. UNC shall use
its best efforts between the Agreement Date and the Closing Date to obtain the
agreement of holders of UNC Stock Options to waive their right to receive
Unexercised Option Shares and, in lieu thereof, agree to accept at the Effective
Time Greenwich Class B Stock in the form of a Cashless Exercise as contemplated
by Section 2.4(C).

                  Section 6.10. Letter of UNC's Auditors. UNC shall use its best
efforts to obtain a letter of Coopers & Lybrand L.L.P. (the "UNC Auditors"),
dated a date within two business days before the date on which the Registration
Statements in connection with both the Proxy/Statement Prospectus and the
Greenwich Securities Offering shall become effective and addressed to UNC, in
form and substance reasonably satisfactory to Greenwich and UNC and customary in
scope and substance for agreed-upon procedures letters delivered by independent
public accountants in connection with registration statements similar to such
Registration Statements.

                  Section 6.11. Letter of Greenwich's Auditors. Greenwich shall
use its best efforts to obtain a letter of Deloitte & Touche LLP (the "Greenwich
Auditors"), dated a date within 




                                       43
<PAGE>

two business days before the date on which the Registration Statement shall
become effective and addressed to Greenwich, in form and substance reasonably
satisfactory to UNC and Greenwich and customary in scope and substance for
agreed-upon procedures letters delivered by independent public accountants in
connection with registration statements similar to the Registration Statement.

                  Section 6.12. Opinions of Financial Advisors. Each of UNC and
Greenwich shall use its best efforts to cause J.P. Morgan and Salomon,
respectively, to provide its opinion, as of a date no earlier than three
business days before the date that the Joint Proxy Statement/Prospectus is
mailed to stockholders of UNC and Greenwich, to the effect that the Exchange
Ratio and the forms of Merger Consideration contemplated by this Agreement and
in the Certificate of Merger is fair to the stockholders of UNC and Greenwich,
respectively, from a financial point of view, and shall include such updated
opinions in the Joint Proxy Statement/Prospectus.

                  Section 6.13. Registration Rights. Greenwich hereby agrees to
the following registration rights, in the event and to the extent that the
Selling Stockholders (as herein defined) shall during the periods described
below shall be unable to avail themselves of the right to effect distributions
of Greenwich Class B Stock pursuant to Rule 144 under the Securities Act or
another applicable exemption from the registration requirements of the
Securities Act:

                           (a) Upon the receipt of a written notice within a
period of two (2) years after the Closing Date from any of those Persons
identified on Schedule 6.13 or any trustee holding shares for the benefit of
such Person (the "UNC Group") requesting Greenwich in writing to register under
the Securities Act shares of Greenwich Class B Stock held by such persons that
represent at least 25% of the shares of Greenwich Class B Stock received by
members of the UNC Group in the Merger, Greenwich shall promptly notify all
other members of the UNC Group in writing of the receipt of such request and any
member of the UNC Group may elect (by written notice sent to Greenwich within
ten business days from the date of such member's receipt of the aforementioned
notice from Greenwich) to have any or all of his shares of Greenwich Class B
Stock included in such registration pursuant to this Section 6.13 (such members
of the UNC Group, together with any other stockholders exercising registration
rights pursuant to Section 6.13(c) hereof, being hereinafter referred to as
"Selling Stockholders"); provided, however, that the aggregate number of shares
included in such registration shall not exceed the aggregate number of shares
received by the members of the UNC Group in the Merger, less the aggregate
number of shares as to which members of the UNC Group have previously exercised
registration rights pursuant to this Section.

                           (b) As expeditiously as possible, Greenwich will use
its reasonable best efforts to cause the offering of all shares designated in
such request(s) (the "Shares") to be registered under the Securities Act so as
to permit the proposed sale; provided that (i) the Shares with respect to which
such public offering has been requested are reasonably anticipated to have an
aggregate price to the public in excess of $5 million, (ii) Greenwich and the
Selling Stockholders are entitled to register the Shares on Form S-3 (or a
successor form) or would be eligible to use such form but for the failure by
Greenwich to timely file all reports required to be 



                                       44
<PAGE>

filed by it under the Exchange Act, and (iii) Greenwich has not commenced or
completed within the previous six months an underwritten public offering.

                           (c) For a period of two (2) years after the Closing
Date, if Greenwich shall at any time propose to file on its own behalf and/or
the behalf of any other stockholders a registration statement under the
Securities Act for an offering of Greenwich Class B Stock solely for cash on a
form that would also permit registration of shares of Greenwich Class B Stock
held by members of the UNC Group, Greenwich shall give notice of such proposed
registration to each member of the UNC Group as promptly as possible, but in any
event at least thirty (30) days before the initial filing with the SEC of such
registration statement, which notice shall set forth the intended method of
disposition of the shares proposed to be registered by Greenwich. The notice
shall offer to include in such filing the aggregate number of shares of
Greenwich Class B Stock as the Selling Stockholders may request (not to exceed
the aggregate number of shares received by members of the UNC Group in the
Merger, less the number of shares as to which members of the UNC Group have
previously exercised registration rights pursuant to this Section), subject to
this Section 6.13(c). Each member of the UNC Group desiring to have Greenwich
Class B Stock registered under this Section 6.13(c) shall advise Greenwich in
writing within ten (10) business days after the date of notice of such offer
from Greenwich, setting forth the amount of such Greenwich Class B Stock for
which registration is requested. Greenwich shall (except to the extent otherwise
provided in this Section 6.13(c)) thereupon include in such filing the number of
shares of Greenwich Class B Stock for which registration is so requested and
shall use its best efforts to effect registration under the Securities Act of
such shares. Notwithstanding the foregoing: (i) Greenwich shall not be required
to give notice or to include shares in any such registration if the proposed
registration is primarily (A) a registration of a dividend reinvestment, stock
option, employee benefit or compensation plan or of securities issued or
issuable pursuant to any such plan, or (B) a registration of securities proposed
to be issued in exchange for securities or assets of, or in connection with a
merger or consolidation with, another entity; (ii) if Greenwich is advised in
writing by its underwriters that the inclusion of all or any portion of such
shares would in their reasonable opinion jeopardize the success of the proposed
offering, Greenwich may exclude all or such portion of such shares from
registration; (iii) the offering of such shares by the Selling Stockholders
shall be on the same terms as the offering by Greenwich; (iv) in the event other
parties have similar registration rights at the time of the offering, the number
of shares to be registered may be limited by Greenwich pursuant to clause (ii)
of this Section 6.13(c) on a pro rata basis according to the total amount of
shares owned by such parties or on such other basis as may be agreed upon by
such parties (provided that no limitation shall apply to shares offered by
Greenwich for its own account); (v) Greenwich may, without the consent of the
Selling Stockholders, withdraw such registration statement and abandon the
proposed offering in which such persons had requested to participate; and (vi)
Greenwich shall be under no obligation to any Selling Stockholder pursuant to
this Section 6.13(c) unless such persons accept the terms of underwriting agreed
upon by Greenwich and its underwriters.

                           (d) If Greenwich is required by the provisions of
this Section 6.13 to use its best efforts to effect the registration of any of
its securities under the Securities Act, Greenwich shall, as expeditiously as
possible:



                                       45
<PAGE>

                                    (i) prepare and file with the SEC a
registration statement with respect to the Shares and use its best efforts to
cause such registration statement to become and remain effective for a period of
time (not to exceed 180 days) required for the disposition of the Shares by the
Selling Stockholders;

                                    (ii) prepare and file with the SEC such
amendments and supplements to such registration statement and the prospectus
used in connection therewith as may be necessary to keep such registration
statement effective and to comply with the provisions of the Securities Act with
respect to the sale or other disposition of all Shares covered by such
registration statement until the earlier of such time as all of such Shares have
been disposed of in a public offering or the expiration of 180 days;

                                    (iii) furnish to the Selling Stockholders
such number of copies of a summary prospectus or other prospectus, including a
preliminary prospectus, in conformity with the requirements of the Securities
Act, and such other documents, as such Selling Stockholders may reasonably
request;

                                    (iv) use its best efforts to register or
qualify the securities covered by such registration statement under such other
securities or blue sky laws of such jurisdictions within the United States and
Puerto Rico as each Selling Stockholder shall request (provided, however, that
Greenwich shall not be obligated to qualify as a foreign corporation to do
business under the laws of any jurisdiction in which it is not then qualified or
to file any general consent to service of process), and do such other reasonable
acts and things as may be required of it to enable such Selling Stockholder to
consummate the disposition in such jurisdiction of the Shares covered by such
registration statement;

                                    (v) furnish, at the request of any Selling
Stockholder: (1) an opinion, dated the date of the closing, of counsel
representing Greenwich for the purposes of such registration, addressed to the
underwriters and the Selling Stockholders, or if the Shares are not being sold
through underwriters, then to the Selling Stockholders making such request, in
each case customary for the type of offering and concluding, without limitation,
that the registration statement, the related prospectus, and each amendment or
supplement thereto, comply as to form in all material respects with the
requirements of the Securities Act and the applicable rules and regulations of
the SEC thereunder; and (2) a letter, dated the date of the closing, from the
independent certified public accountants of Greenwich, addressed to the
underwriters, or if such Shares are not being sold through underwriters, then to
Greenwich and, if feasible, to the Selling Stockholders making such request,
substantially to the effect that they are independent certified public
accountants within the meaning of the Securities Act and that, in the opinion of
such accountants, the financial statements and other financial data of Greenwich
included in the registration statement or the prospectus, or any amendment or
supplement thereto, comply as to form in all material respects with the
applicable accounting requirements of the Securities Act. Such opinion of
counsel shall additionally cover such other legal matters with respect to the
registration as the underwriters and the Selling Stockholders may reasonably
request. Such letter from the independent certified public accountants shall
additionally cover such other financial 




                                       46
<PAGE>

matters (including information as to the period ending not more than five (5)
business days before the date of such letter) with respect to the registration
in respect of which such letter is being given as the underwriters and the
Selling Stockholders may reasonably request; and

                                    (vi) otherwise use its best efforts to
comply with all applicable rules and regulations of the SEC, and make available
to its stockholders, as soon as reasonably practicable, but not later than 18
months after the effective date of the registration statement, an earning
statement covering the period of at least 12 months beginning with the first
full month after the effective date of such registration statement, which
earning statement shall satisfy the provisions of Section 11(a) of the
Securities Act.

                           (e) The obligations of Greenwich under this Section
6.13 are subject to the following terms and limitations:

                                    (i) Greenwich shall be entitled to postpone
for up to three months in any 12-month period the filing of any registration
statement otherwise required to be prepared and filed by it pursuant to Section
6.13(a) if, at the time it receives a request for such registration, its Board
of Directors determines, in its reasonable good faith judgment, that such
registration and sale would materially interfere with any financing,
acquisition, corporate reorganization or other material transaction involving
Greenwich then under consideration or would otherwise be detrimental to
Greenwich and its stockholders; provided, however, that the two-year period
contemplated by Section 6.13(a) shall be tolled at any time when Greenwich has
postponed a registration pursuant to this paragraph or is excused from
registering Shares pursuant to Section 6.13(b)(iii) hereof (unless, in the case
of such Section 6.13(b)(iii), Greenwich has notified the members of the UNC
Group in writing that Greenwich will waive the application of such Section with
respect to the subject underwritten public offering);

                                    (ii) in the event of a request for
registration under Section 6.13(a), Greenwich shall use its best efforts
(without being legally bound thereby) to cause sales of shares on behalf of
Selling Stockholders to be made through a nationally recognized investment
banking firm selected by Greenwich which shall act as managing underwriter;

                                    (iii) The Selling Stockholders shall
reimburse Greenwich for all reasonable fees and expenses associated with any
registration and offering of shares for the benefit of members of the UNC Group
pursuant to Section 6.13(a), including, without limitation, all SEC and state
"Blue Sky" filing fees, all fees and expenses of Greenwich's counsel and
accountants, all printing and mailing fees, and the fees and expenses of counsel
for the underwriters, if applicable; and shall pay all underwriting fees or
brokerage commissions, and fees and expenses of any counsel or accountants
retained by any member of the UNC Group in connection with such registration and
offering shall be the sole and exclusive liability and obligation of the UNC
Group (all of the foregoing, whether paid by Greenwich or the UNC Group, are
collectively referred to as, "Registration Expenses"). In the event of a
registration under Section 6.13(a), Greenwich shall not be obligated to pay the
costs related to the preparation of any audited financial statements included in
any registration statement required to be prepared and filed by it




                                       47
<PAGE>

pursuant to Section 6.13(a) as of any date other than the end of its fiscal year
or for any audited financial statements for any period of less than 12 months.
For all other registrations and offerings of shares pursuant to this Section
6.13, the selling UNC Group stockholders shall pay, on a pro rata basis, all
Registration Expenses and other costs and expenses associated with such
registrations and offerings;

                                    (iv) Greenwich shall not be obligated to
provide more than a total of two registrations pursuant to Section 6.13(a) and
Section 6.13(c); provided that in the event any shares are excluded from
registration pursuant to Section 6.13(c) or in the event such registration is
withdrawn or abandoned by Greenwich, the UNC Group stockholders shall have
additional registration rights pursuant to such subsection until such time as
the shares originally proposed to be registered thereunder have been registered
pursuant to this Section;

                                    (v) Greenwich, the Selling Stockholders and
any underwriter of an offering pursuant to any registration statement provided
for in this Section shall have entered into an underwriting agreement or other
agreement containing provisions with respect to the indemnification of the
aforementioned parties in connection with the preparation and use of such
registration statement in form and substance reasonably satisfactory to
Greenwich and any such underwriter (except that no Selling Stockholder shall be
required to undertake any indemnification obligation with respect to information
contained in any registration statement not furnished by such Selling
Stockholder); and

                                    (vi) it shall be a condition precedent to
the obligations of Greenwich under this Section 6.13 that the Selling
Stockholders shall furnish to Greenwich such information regarding the Selling
Stockholders, the shares proposed to be sold and the intended method of
disposition of such securities as Greenwich shall reasonably request.

                           (f) The registration rights provided herein may not
be assigned, by operation of law or otherwise, to any other person; provided,
however, that such registration rights may be assigned to the transferee of any
shares of Greenwich Class B Stock received by a member of the UNC Group in the
Merger (i) if such transfer occurs by will or pursuant to the laws of descent
and distribution, or (ii) if the transferee is a member of the immediate family
of any member of the UNC Group or is a trust for the benefit of any such
persons.

                  Section 6.14. Indemnification; Insurance.

                           (a) Except as may be limited by applicable Law, from
the Effective Time and for a period of three (3) years thereafter, Greenwich
shall cause UNC to maintain all rights of indemnification existing in favor of
the directors and officers of UNC on terms no less favorable than those provided
in the certificate of incorporation and bylaws of UNC on the date of this
Agreement with respect to matters occurring before the Effective Time.

                           (b) Greenwich shall cause to be maintained in effect
for three (3) years from the Effective Time the current policies for directors'
and officers' liability insurance maintained by UNC (provided that Greenwich may
substitute therefor policies of at least the same 




                                       48
<PAGE>

coverage containing terms and conditions that are not materially less
advantageous) with respect to matters occurring before the Effective Time, to
the extent such insurance is available to Greenwich in the market.

                  Section 6.15 Board of Directors Approval Each of UNC and
Greenwich agrees that the UNC Board of Directors and the Greenwich Board of
Directors, respectively, will recommend that its stockholders adopt this
Agreement and approve the Merger unless advised in writing by the respective
counsel that such recommendation will constitute a violation of its fiduciary
duties to stockholders.

                  Section 6.16 UNC Stock Options UNC agrees not to grant any
further Stock Options following the Agreement Date through and including the
Effective Time of the Merger.

                  Section 6.17 Best Efforts, etc. Subject to the terms and
conditions herein provided, each of the parties hereto agrees to use its best
efforts to take, or cause to be taken, all action, and to do, or cause to be
done, all things necessary, proper or advisable under applicable laws and
regulations to consummate and make effective the transactions contemplated by
this Agreement, including obtaining any consents, authorizations, exemptions and
approvals from, and making all filings with, any insurance department,
governmental, regulatory or public body or authority which are necessary or, in
the judgment of the parties, desirable in connection with the transactions
contemplated by this Agreement.

                  Section 6.18 HSR Act. UNC and Greenwich shall, as soon as
practicable, file Notification and Report Forms under the HSR Act with the
Federal Trade Commission (the "FTC") and the Antitrust Division of the
Department of Justice (the "Antitrust Division") and shall use best efforts to
respond as promptly as practicable to all inquiries received from the FTC or the
Antitrust Division for additional information or documentation.

                  Section 6.19 Interim Financials. Prior to the Effective Time,
UNC will deliver to Greenwich, and Greenwich will deliver to UNC, as soon as
available but in no event later than 30 days after the end of any fiscal
quarter, a consolidated statement of financial position of such party and its
Subsidiaries as at the last day of such fiscal quarter and the consolidated
statements of income and changes in financial position of such party and its
Subsidiaries for the fiscal period then ended (which statements may be
unaudited) prepared in conformity with the requirements of Form 10-Q under the
Exchange Act.

                  Section 6.20 Material Events. At all times prior to the
Effective Time, each party shall promptly notify the others in writing of the
occurrence of any event which will or may result in the failure to satisfy any
of the conditions specified in Articles VIII or IX hereof.

                  Section 6.21 Greenwich Financings.

                           (a) Proposed Financings. In order to assist Greenwich
in funding the estimated Cash Merger Consideration and transaction expenses
contemplated by this Agreement, Salomon or its Affiliates has advised Greenwich
that it may provide Greenwich with (i) a 



                                       49
<PAGE>

commitment from Salomon (the "Senior Debt Financing Commitment") to provide the
Greenwich Companies and the UNC Companies with a $110 million senior secured
credit facility (the "Senior Secured Credit Facility"); (ii) a proposal (the
"Debt Proposal") from Salomon to underwrite or act as placement agent or
managing underwriter in connection with an offering of approximately $200
million of senior notes; and (iii) a proposal (the "Equity Proposal") from
Salomon to underwrite or act as placement agent or managing underwriter in
connection with an offering of approximately $175 million of shares of Greenwich
Class B Stock. The simultaneous offerings of Greenwich Class B Stock and/or
Greenwich notes referred to in clauses (ii) are (iii) are collectively referred
to herein as the "Greenwich Securities Offering," and the Senior Credit Facility
and the Securities Offering are collectively referred to herein as the
"Greenwich Financings."

                           (b) Delivery of Commitment and Proposals. Greenwich
shall provide UNC with true copies of the Salomon Senior Debt Financing
Commitment, the Equity Proposal and the Debt Proposal promptly upon receipt of
same.

                           (c) Greenwich Securities Offering. Greenwich may, in
consultation with Salomon, proceed with the Greenwich Securities Offering either
as a public offering pursuant to a Registration Statement or as a private
offering, exempt from the registration requirements of the Securities Act;
provided, that such Greenwich Securities Offering shall not, by its terms and
after giving effect thereto, cause a default or event of default to occur under
the terms of any indenture or loan agreement currently binding upon the
Greenwich Companies and/or the UNC Companies.

                           In order to facilitate consummation of such Greenwich
Securities Offering, the parties hereto do hereby agree as follows:

                                    (i) Greenwich shall, subject to its receipt
                           from UNC of the Audited 1996 UNC Financial Statements
                           and pro forma financial statements giving effect to
                           the transactions contemplated hereby (to be prepared
                           by Greenwich and reviewed by the Greenwich Auditors)
                           file with the SEC, simultaneously with the initial
                           filing of the Joint Proxy Statement/Prospectus, or as
                           soon thereafter as is practicable, a Registration
                           Statement in respect of the Greenwich Securities
                           Offering, and shall, in good faith, use its best
                           efforts to cause such Registration Statement to be
                           declared effective by the SEC as soon as practicable.
                           Alternatively, if the Greenwich Class B Stock or
                           other securities are to be offered in a transaction
                           exempt from the registration requirements of the
                           Securities Act, Greenwich shall, subject to its
                           receipt of the foregoing UNC financial statements,
                           promptly prepare the necessary information memorandum
                           or offering circular traditionally used in such
                           private placement exempt transactions.

                                       50
<PAGE>

                                    (ii) UNC shall cause its officers and
                           directors (and shall use its best efforts to cause
                           its legal and financial representatives) to assist
                           Greenwich and its officers, directors and
                           representatives, to file and cause such Registration
                           Statement to be declared effective by the SEC as soon
                           as practicable, or alternatively, to complete such
                           information memorandum or offering circular.

                                    (iii) In furtherance of its covenants set
                           forth in clause (ii) above, UNC shall actively
                           participate in the drafting of all relevant sections
                           of the Registration Statement or information
                           memorandum, and all amendments thereto, relating to
                           the UNC Businesses, financial condition, management
                           and all related disclosures concerning the UNC
                           Companies, as shall be required pursuant to all rules
                           and regulations, including, without limitation,
                           Regulation C and Regulation S-X, as promulgated under
                           the Securities Act, or (to the extent applicable) as
                           may be requested by the SEC in any letters of comment
                           received by Greenwich (true copies of which shall
                           promptly be furnished by Greenwich to UNC).

                                    (iv) Each of Greenwich and Merger
                           Subsidiary, on one hand, and UNC, on the other hand,
                           shall (A) execute and deliver to each other
                           and to the representatives of the several
                           underwriters or placement agent, such cross
                           indemnification agreements as may be reasonably
                           required and as are traditional in securities
                           offerings in connection with disclosures contained in
                           such Registration Statement or information
                           memorandum, as amended, relating to the respective
                           parties hereto; (B) use their best efforts to cause
                           UNC Auditors and Greenwich Auditors to deliver such
                           "agreed-upon procedures" and related letters as the
                           representatives of the several underwriters may
                           require in the Underwriting Agreement or securities
                           purchase agreement, concerning financial and other
                           numerical disclosures contained in the Registration
                           Statement and all exhibits and schedules thereto; and
                           (C) furnish all documents and other agreements which
                           counsel for Greenwich and counsel for UNC may
                           reasonably require or request.

                                    (v) Greenwich shall use its best efforts to
                           consummate the Greenwich Securities Offering relating
                           to the Greenwich Class B Stock or other securities,
                           subject at all times to prevailing market conditions.

                  Section 6.22 Rights Agreement. UNC Board will take all
necessary action (including, but not limited to redemption) so that, as of the
Effective Time, the Rights Agreement dated as of September 25, 1987, between UNC
and Manufacturers Hanover Trust Company, as amended on May 16, 1996, in respect
of the potential issuance of Series A Preferred Stock (the "Rights Agreement")
will be terminated and neither Greenwich nor Merger Subsidiary, nor any of their
respective affiliates will be deemed to be an "Acquiring Person" or an "Adverse
Person" (as such terms are defined in the Rights Agreement) for purposes
thereof, and (iii) a "Distribution 




                                       51
<PAGE>

Date" (as such term is defined in the Rights Agreement) shall not occur by
virtue of the Merger. UNC will take any and all action reasonably requested by
Greenwich to ensure and confirm that UNC, Greenwich, Merger Subsidiary and their
respective affiliates will not have any obligations in connection with the
Rights or the Rights Agreement in connection with the Merger.



                                   ARTICLE VII
                  CONDITIONS TO THE OBLIGATIONS OF ALL PARTIES

                  The respective obligation of each party to consummate the
Merger is subject to the satisfaction at or before the Effective Time of the
following conditions precedent:

                  Section 7.1 Greenwich Stockholder Approvals. The transactions
contemplated in this Agreement shall have been approved by the affirmative vote
of the stockholders of Greenwich by the requisite vote in accordance with
Greenwich's Nasdaq listing agreement;

                  Section 7.2 UNC Stockholder Approvals. The transactions
contemplated in this Agreement shall have been approved, and the Certificate of
Merger shall have been adopted, by the affirmative vote of the holders of UNC
Common Stock and UNC Series B Preferred Stock by the requisite vote in
accordance with the DGCL;

                  Section 7.3 Absence of Order. No order, decree or injunction
shall have been enacted, entered, promulgated or enforced by any United States
court of competent jurisdiction or any United States governmental authority
which prohibits the consummation of the Merger; provided, however, that the
parties hereto shall use their best efforts to have any such order, decree or
injunction vacated or reversed;

                  Section 7.4 Registration Statement. The Registration Statement
in respect of both the Joint Proxy Statement/Prospectus and the Greenwich
Securities Offering shall have become effective in accordance with the
provisions of the Securities Act, and no stop order suspending such
effectiveness shall have been issued and remain in effect;

                  Section 7.5 Certain Approvals. Any waiting period applicable
to the Merger under the HSR Act shall have terminated or expired, all applicable
requirements of the Exchange Act shall have been satisfied and any applicable
filings under state securities, "Blue Sky" or takeover laws shall have been
made;

                  Section 7.6 Tax Opinions. The parties hereto shall have
received the opinion of Greenberg Traurig Hoffman Lipoff Rosen & Quentel and the
opinion of Neuberger, Quinn, Gielen, Rubin & Gibber, P.A., based on customary
assumptions and on representations set forth in certificates of officers of
Greenwich and UNC (each dated the date of the Effective Time), to the effect
that, for United States federal income tax purposes, (i) the Merger will
constitute a "reorganization" under Section 368(a) of the Code; (ii) no gain or
loss will be recognized by Greenwich, Merger Subsidiary or UNC upon consummation
of the Merger; (iii) gain or loss will be recognized by stockholders of UNC upon
the exchange of shares of UNC Common Stock for shares of Greenwich Class B Stock
(including any fractional share interest) in the Merger only to the extent of
the Cash Consideration per Share; (iv) the aggregate basis of 




                                       52
<PAGE>

shares of Greenwich Class B Stock (including any fractional share interest)
received by a UNC stockholder in the Merger will be the same as the aggregate
basis of the shares of UNC Common Stock exchanged therefor, increased by the
amount of gain recognized by such UNC stockholder; (v) the holding period for
shares of Greenwich Class B Stock (including any fractional share interest)
received by a UNC stockholder in the Merger will include the holding period for
the shares of UNC Common Stock exchanged thereof, if such shares of UNC Common
Stock are held as a capital asset at the Effective Time; and (vi) cash received
in lieu of a fractional share of Greenwich Class B Stock will be treated as
having been received as full payment in exchange for such fractional share;

                  Section 7.7 Nasdaq Inclusion. The shares of Greenwich Class B
Stock required to be issued in connection with the Merger and the Greenwich
Securities Offering shall have been approved for inclusion in Nasdaq subject to
official notice of issuance; and

                  Section 7.8 Other Consents and Approvals. All other necessary
and material governmental, regulatory, stockholder and third party lender,
customer or other clearances, consents, licenses or approvals shall have been
received.

                                  ARTICLE VIII
                   CONDITIONS TO THE OBLIGATIONS OF GREENWICH
                              AND MERGER SUBSIDIARY


         Each and every obligation of Greenwich and Merger Subsidiary under this
Agreement shall be subject to the satisfaction, on or prior to the Closing Date,
of each of the following conditions, each of which may be waived by Greenwich
and Merger Subsidiary as provided herein except as otherwise provided by law.

                  Section 8.1 Representations and Warranties True The
representations and warranties of UNC contained in this Agreement shall be true
and correct in all material respects as of the Agreement Date and shall be
deemed to have been made again at and as of the Closing Date and shall then be
true and correct in all material respects, and at the Closing, UNC shall have
delivered to Greenwich a certificate to that effect signed by the Chief
Executive Officer and the principal financial officer of UNC.

                  Section 8.2 UNC's Performance Each of the obligations of UNC
to be performed by it on or before the Closing Date pursuant to the terms of
this Agreement shall have been duly performed in all material respects by the
Closing Date, including all covenents and agreements of UNC set forth in Article
VI and Article VII hereof, and at the Closing, UNC shall have delivered to
Greenwich a certificate to that effect signed by the Chief Executive Officer and
the principal financial officer of UNC.

                  Section 8.3 Opinion of UNC's Counsel Greenwich shall have been
furnished with opinions of Neuberger, Quinn, Gielen, Rubin & Gibber, P.A.,
counsel to UNC, dated the Closing Date, in substantially the form attached
hereto as Exhibit B. In rendering such opinions 




                                       53
<PAGE>

such counsel may rely, to the extent such counsel deems such reliance necessary
or appropriate, upon opinions of other counsel, in form and substance
satisfactory to Greenwich (or may deliver such opinions of other counsel each
dated the Closing Date and addressed to Greenwich), and, as to matters of fact,
upon certificates of government officials and of any officials of UNC or any UNC
Subsidiary, provided that the extent of such reliance is set forth in such
opinion and such opinion states that it is reasonable for Greenwich to rely
thereon.

                  Section 8.4. Resignation. As at the Effective Time, Dan A.
Colussy shall tender his resignation as Chairman and Chief Executive Officer of
UNC. Such resignation, however, shall not in any way limit or affect Dan A.
Colussy's right to receive his allocable payments contemplated by Section 9.7
and Section 2.4(f).

                  Section 8.5 Certificates UNC shall have furnished Greenwich
with such certificates of its officers and others to evidence compliance with
the conditions set forth in this Article VIII as may be reasonably requested by
Greenwich.

                  Section 8.6 Fairness Opinion. Greenwich shall have received
from Salomon Brothers, an opinion that the Merger Consideration to be paid by
Greenwich pursuant to this Agreement for the shares of UNC Common Stock and UNC
Series B Preferred Stock is fair to the stockholders of Greenwich from a
financial point of view and such opinion shall not have been withdrawn or
modified.

                  Section 8.7 Dissenting Shares. In the event Dissenting Shares
shall be entitled to exercise rights contemplated by Section 2.4(e) hereof, the
holders of not more than two (2%) percent of the issued and outstanding shares
of UNC Common Stock shall have exercised their rights contemplated by Section
2.4(e) and shall have become Dissenting Shares.

                  Section 8.8 Completion of Greenwich Financings. The Greenwich
Financings contemplated by Section 6.21 of this Agreement shall have been
consummated on or prior to the Effective Time.

                  Section 8.9 SERP Termination. Subject to the satisfaction of
Section 9.7 below, on or before the Closing Date UNC shall have terminated,
effective as of the Agreement Date, any further obligations it has or may have
had in connection with any supplemental executive retirement plans, other than
obligations that have vested as of the Agreement Date.

                  Section 8.10 Standby Funding Commitment. On or before the
filing of the Registration Statement, Greenwich shall have received: (a) from
Salomon or another recognized investment banking firm or financial institution,
a standby funding commitment in form and content customary in transactions of
such type, to provide the Greenwich Companies and the UNC Companies with a
sufficient amount of debt financing which shall enable the Greenwich Companies
and UNC Companies on or after the Effective Time to fund any mandatory
redemption payments required to be made under the UNC Notes, resulting from the
"Change in Control" provisions of the Indentures under which such UNC Notes were
issued; and/or (b) written waivers of such "Change of Control" provisions from
any or all holders of such UNC Notes.


                                       54
<PAGE>

                                   ARTICLE IX
                      CONDITIONS TO THE OBLIGATIONS OF UNC


         Each and every obligation of UNC under this Agreement shall be subject
to the satisfaction, as at or before the Effective Time, of each of the
following conditions, each of which may be waived by UNC as provided herein
except as otherwise provided by law:

                  Section 9.1 Representations and Warranties True The
representations and warranties of Greenwich and Merger Subsidiary contained in
this Agreement shall be true and correct in all material respects as of the
Agreement Date and shall be deemed to have been made again at and as of the
Closing Date and shall then be true and correct in all material respects, and at
the Closing, Greenwich and Merger Subsidiary shall have each delivered to UNC a
certificate to that effect signed by the Chief Executive Officer and the
principal financial officer of Greenwich and of Merger Subsidiary.

                  Section 9.2 Greenwich's and the Merger Subsidiary's
Performance Each of the obligations of Greenwich and Merger Subsidiary to be
performed by them on or before the Closing Date pursuant to the terms hereof
shall have been duly performed and complied with in all material respects by the
Closing Date and at the Closing, Greenwich and Merger Subsidiary shall have each
delivered to UNC a certificate to that effect signed by the Chief Executive
Officer and principal financial officer of Greenwich and Merger Subsidiary.

                  Section 9.3 Opinion of Greenwich's and the Merger Subsidiary's
Counsel UNC shall have been furnished with an opinion of Greenberg, Traurig,
Hoffman, Rosen, Lipoff & Quentel, PA, counsel to Greenwich, dated the Closing
Date, in substantially the form attached hereto as Exhibit C. In rendering such
opinions such counsel may rely, to the extent such counsel deems such reliance
necessary or appropriate, upon opinions of other counsel, in form and substance
satisfactory to UNC (or may deliver such opinions of other counsel each dated
the Closing Date and addressed to UNC), and, as to matters of fact, upon
certificates of government officials and of any official or officials of
Greenwich, Merger Subsidiary or any Greenwich subsidiary, provided that the
extent of such reliance is set forth in such opinions and such opinions state
that it is reasonable for UNC to rely thereon.

                  Section 9.4 Certificates Greenwich and Merger Subsidiary shall
have furnished UNC with such certificates of their respective officers and
others to evidence compliance with the conditions set forth in this Article X as
may be reasonably requested by UNC.

                  Section 9.5 Fairness Opinion. UNC shall have received from
J.P. Morgan an opinion that the Merger Consideration to be paid by Greenwich
pursuant to this Agreement for the shares of UNC Common Stock and UNC Series B
Preferred Stock is fair to the stockholders of UNC from a financial point of
view and such opinion shall not have been withdrawn or modified.

                  Section 9.6 Payment of Merger Consideration. On or before the
Effective Time, Greenwich shall have paid, or shall have provided the Exchange
Agent with the required 




                                       55
<PAGE>

number of shares of Greenwich Class B Stock and amount of Cash Merger
Consideration necessary to pay the full Merger Consideration contemplated by
this Agreement.

                  Section 9.7 Funding of SERP/CIC Payments. On or before the
Effective Time, Greenwich shall have paid the amounts necessary to fund
supplemental executive retirement plan and change in control payment obligations
of the UNC Companies as at the Closing Date.

                  Section 9.8 Standby Funding Commitment. On or before the
filing of the Registration Statement, Greenwich shall have provided UNC with:
(a) a standby funding commitment from Salomon or another recognized investment
banking firm or financial institution, in form and content customary in
transactions of such type, to provide the Greenwich Companies and the UNC
Companies with a sufficient amount of debt financing which shall enable the
Greenwich Companies and UNC Companies on or after the Effective Time to fund any
mandatory redemption payments required to be made under the UNC Notes, resulting
from the "Change in Control" provisions of the Indentures under which such UNC
Notes were issued; and/or (b) written waivers of such "Change in Control"
provisions from any or all holders of such UNC Notes.


                                    ARTICLE X
                                     CLOSING

                  Section 10.1 Time and Place Subject to the provisions of
Articles VI, VII, VIII and IX hereof, the closing of the transactions
contemplated hereby shall take place as soon as practicable after the
satisfaction or waiver of the conditions to Closing contained in Articles VIII
and IX and simultaneous with the effectiveness of the Registration Statement
relating to the Greenwich Equity Offering at the offices of Greenberg, Traurig,
Hoffman, Rosen, Lipoff & Quentel, PA, 153 East 53rd Street, New York, New York,
at 1:00 P.M., local time, or at such other place, at such other time, or on such
other date as the Greenwich, Merger Subsidiary and UNC may mutually agree upon
for the Closing to take place.

                  Section 10.2 Deliveries at the Closing At the Closing:

                           (a) There shall be delivered to Greenwich, Merger
Subsidiary and UNC the opinions, certificates and other documents and
instruments provided to be delivered under Articles VII and IX hereof.

                           (b) Merger Subsidiary and UNC shall cause the
Certificate of Merger to be filed in accordance with the provisions of the DGCL
and shall take any and all other lawful actions and do any and all other lawful
things necessary to effect the Merger and to enable the Merger to become
effective.


                                       56
<PAGE>

                                   ARTICLE XI
                         TERMINATION; AMENDMENT; WAIVER

                  Section 11.1. Termination. Notwithstanding adoption of this
Agreement by stockholders of UNC and Greenwich, this Agreement may be
terminated, and the Merger abandoned, at any time prior to the Effective Time of
the Merger:

                           (a) by the mutual consent of the Boards of Directors
of Greenwich, Merger Subsidiary and UNC; or

                           (b) by either Greenwich or UNC if the Merger shall
not have been consummated on or before the earlier of (i) three Business Days
after the date Greenwich's Registration Statement in respect of the proposed
Greenwich Securities Offering shall have been declared effective by the SEC, or
(ii) June 30, 1997 (the "Outside Effective Time"); provided, that the right to
terminate this Agreement under this Section 11.1(b) shall not be available to
any party whose act or omission (which act or omission was solely within such
party's control), shall have resulted in the Outside Effective Time's having
passed without the Merger having been consummated; or

                           (c) by either Greenwich or UNC, if any court of
competent jurisdiction in the United States or other United States governmental
body shall have issued an order, judgment or decree (other than a temporary
restraining order) restraining, enjoining or otherwise prohibiting the Merger
and such order, judgment or decree shall have become final and nonappealable; or

                           (d) by Greenwich, if any of the following events have
occurred:

                                    (i) the Merger contemplated by this
Agreement is voted upon by holders of UNC Common Stock at the UNC Stockholders'
Meeting, and the votes are not sufficient to satisfy the condition set forth in
Section 7.2; or

                                    (ii) the UNC Board does not recommend in the
Joint Proxy Statement/Prospectus that UNC's stockholders adopt and approve the
Merger, this Agreement and the transactions contemplated hereby and thereby for
any reason other than the occurrence and continuation of a Greenwich Material
Adverse Effect; or

                                    (iii) after recommending in the Joint Proxy
Statement/Prospectus that UNC's stockholders adopt and approve the Merger, this
Agreement and the transactions contemplated hereby, the UNC Board shall have
withdrawn, modified or amended such recommendation in any respect materially
adverse to Greenwich for any reason other than the occurrence and continuation
of a Greenwich Material Adverse Effect; or

                                    (iv) if there shall occur a breach by UNC of
any representation or warranty set forth in this Agreement, which breach has a
UNC Material Adverse Effect and is within the actual knowledge of any Person
listed in Schedule 1.46, or UNC shall breach any 




                                       57
<PAGE>

covenant or agreement contained in this Agreement which makes consummation of
the transaction contemplated hereby either impossible or impracticable for
Greenwich.

                           (e) by UNC if, before the Effective Time, a Person or
group makes a bona fide proposal with respect to the acquisition of all or
substantially all of UNC's outstanding capital stock or assets, that the Board
of Directors of UNC believes in good faith after consultation with its financial
advisors, is more favorable, from a financial point of view, to the stockholders
of UNC than the proposal set forth in this Agreement (a "Superior Proposal");
provided that Greenwich does not (in its sole option) elect to make, within ten
Business Days after receiving notice of such Superior Proposal, an offer that
the Board of Directors of UNC believes, in good faith after consultation with
its financial advisors, is at least as favorable, from a financial point of
view, to the UNC stockholders as such Superior Proposal; or

                           (f) by Greenwich, in the event that any of the
Greenwich Financings contemplated by Section 6.21 of this Agreement, including
the proposed Greenwich Securities Offering, shall not be consummated by reason
of the occurrence of any of the following:

                                    (i) adverse conditions affecting the
         securities markets generally,

                                    (ii) a Greenwich Material Adverse Effect,

                                    (iii) a UNC Material Adverse Effect,

                                    (iv) the closing price of a share of
         Greenwich Class B Stock as reported on Nasdaq on the trading day
         immediately preceding a proposed effective date of the Registration
         Statement for the contemplated Greenwich Securities Offering or on the
         trading day immediately preceding any contemplated Closing Date shall
         be $18.46 or less, or

                                    (v) Greenwich shall receive advice from
         Greenwich's managing underwriters or bankers that any of the Greenwich
         Financings contemplated by Section 6.21 may not (for any of the reasons
         specified above, or otherwise) be accomplished on substantially the
         terms and conditions described in the Senior Debt Financing Commitment,
         Debt Proposal and Equity Proposal which shall have been received by
         Greenwich pursuant Section 6.21, or such other terms as shall be
         acceptable to Greenwich and that would not have a Material Adverse
         Effect on the consolidated Greenwich Businesses and UNC Businesses,
         after giving pro forma effect to the Merger contemplated hereby; or

                           (g) by UNC, if there shall have occurred and shall be
continuing a Greenwich Material Adverse Effect, or by Greenwich, if there shall
have occurred and shall be continuing a UNC Material Adverse Effect,
respectively; or


                                       58
<PAGE>

                           (h) by UNC, if:

                                    (i) it shall either be acknowledged in
         writing by Eugene P. Conese, Sr., Eugene P. Conese, Jr. or Robert J.
         Vanaria, or be proven in a court of competent jurisdiction from which
         no appeal can or has been taken, that (x) as at the Agreement Date, any
         of such persons had actual knowledge of a Greenwich Material Adverse
         Effect existing as at the Agreement Date, which causes a material
         breach to exist on the Agreement Date of a material Greenwich
         representation or warranty set forth in Article IV hereof, and (y)
         Eugene P. Conese, Sr., Eugene P. Conese, Jr. or Robert J. Vanaria
         willfully and deliberately failed or refused to disclose such Greenwich
         Material Adverse Effect to UNC, and (z) as a result of such
         nondisclosed Greenwich Material Adverse Effect, Greenwich is unable to
         consummate the Greenwich Financings contemplated by Section 6.21
         hereof; or

                                    (ii) after all conditions precedent to
         Greenwich's obligation to consummate the Merger set forth in this
         Agreement, including Article VII and VIII, including all Greenwich
         Financings, have been fully performed or are capable of being fully
         performed, Eugene P. Conese, Sr. or Eugene P. Conese, Jr. shall have
         elected not to vote their shares of Greenwich Class A Stock in favor of
         the Merger and the transactions contemplated hereby.

                  Section 11.2 Effect of Termination In the event of the
termination of this Agreement and the Merger by either Greenwich or UNC, this
Agreement shall become void and there shall be no liability hereunder on the
part of Greenwich, Merger Subsidiary, or UNC or their respective officers or
directors except, in each case, as otherwise provided in Sections 11.3 and 12.1
hereof, which Sections shall survive any such termination and continue in effect
thereafter.

                  Section 11.3 Termination Payments and Expenses

                           (a) If this Agreement is terminated:

                                    (i) by Greenwich, pursuant to clauses (ii),
                                        (iii) or (iv) of Section 11.1(d); or

                                    (ii) by UNC, if any of the events set forth
                                        in Section 11.1(e) shall have occurred;

then UNC shall promptly pay to Greenwich the sum of $20 million.

                  (b) Each party hereto acknowledges that the agreements
contained in this Section 11.3 are an integral part of the transactions
contemplated by this Agreement and that, without these agreements, none of the
parties hereto would enter into this Agreement. Accordingly, if any party hereto
fails to pay any amounts pursuant to this Section 11.3, and, in order to obtain
such payment, legal action is commenced which results in a judgment therefor,
the liable party will pay the plaintiff's reasonable costs (including reasonable
attorneys' fees) in 




                                       59
<PAGE>

connection with such suit, together with interest computed on any amounts
determined pursuant to this Section 11.3 (computed from the date when such
amounts were due and payable pursuant to this Section 11.3) and such costs
(computed from the date or dates incurred) at the prime rate of interest
announced from time to time by Citibank, N.A. The parties' obligations pursuant
to this Section 11.3 will survive any termination of this Agreement.

                  (c) Except as provided for in Section 11.3(d), in the event
that Greenwich shall terminate this Agreement by reason of any of the events
specified in Section 11.1, none of the Greenwich Companies nor their Affiliates
shall have any liability or obligation to any of the UNC Companies or their
Affiliates under this Agreement, or otherwise.

                  (d) In the event that UNC shall be entitled to terminate this
Agreement by reason of the occurrence of the events contemplated by Section
11.1(h) hereof, then Greenwich shall promptly pay to UNC the sum of $20 million.

                  (e) The remedies of the respective parties set forth in this
Section 11.3 constitute full and complete liquidated damages and represent the
sole and exclusive remedies at law of a party electing to terminate this
Agreement pursuant to Section 11.3; provided, that nothing herein contained
shall prevent a party entitled to seek specific performance of this Agreement
from applying to and obtaining from a court of competent jurisdiction such
equitable relief as such court may deem proper in the circumstances.

                  (f) Except as provided in this Section 11.3, all costs and
expenses incurred in connection with this Agreement shall be paid in accordance
with Section 12.1.


                                       60
<PAGE>


                                   ARTICLE XI
                                  MISCELLANEOUS

                  Section 12.1 Expenses Except as provided in Section 11.3, all
costs and expenses incurred in connection with this Agreement, and the
transactions contemplated hereby and thereby shall be paid by the party
incurring such expenses.

                  Section 12.2 No Survival of Representations and Warranties The
respective representations and warranties, obligations, covenants and agreements
of UNC, Greenwich and Merger Subsidiary contained herein or in any Exhibit or
Schedule, certificate or letter delivered pursuant hereto shall expire with, and
be terminated and extinguished by, the effectiveness of the Merger.

                  Section 12.3 Headings The descriptive headings of the several
Articles and Sections of this Agreement are inserted for convenience only and do
not constitute a part of this Agreement.

                  Section 12.4 Notices All notices or other communications
required hereunder shall be in writing and shall be deemed given on the date
delivered if delivered personally (including by reputable overnight courier), on
the date transmitted if sent by telecopy (which is confirmed) or 72 hours after
mailing if mailed by registered or certified mail (return receipt requested) to
the parties at the following addresses (or at such other address for a party as
shall be specified by like notice):

          (a)      if to Greenwich or Merger Subsidiary, to:

                   Greenwich Air Services, Inc.
                   4590 NW 36th Street
                   Miami International Airport, Building 23
                   Miami, Florida 33122
                   Attention: Eugene P. Conese, Sr.,
                              Chairman and Chief Executive Officer
                   Telecopy: (305) 526-7005

with a copy to:    Greenberg Traurig Hoffman Rosen Lipoff & Quentel
                   153 East 53rd Street
                   New York, New York 10022
                   Attention: Stephen A. Weiss, Esq.
                   Telecopy:  (212) 223-7161


                                       61
<PAGE>



          (b)    if to UNC, to:

                 UNC Incorporated
                 175 Admiral Cochrane Drive
                 Annapolis, Maryland 21401
                 Attention: Dan A. Colussy, Chairman and Chief Executive Officer
                 Telecopy:  (410) 224-0439

with a copy to:  Neuberger, Quinn, Gielen, Rubin & Gibber, P.A.,
                 One South Street
                 Baltimore, Maryland 21202
                 Attention: Michael L. Quinn, Esq.
                 Telecopy:  (410) 332-8594

                  Section 12.5 Assignment This Agreement and all of the
provisions hereof shall be binding upon and inure to the benefit of the parties
hereto and their respective successors and permitted assigns, but neither this
Agreement nor any of the rights, interests, or obligations hereunder, shall be
assigned by any of the parties hereto without the prior written consent of the
other parties, except that Merger Subsidiary may assign all of its rights,
interests and obligations hereunder to Greenwich or to another wholly owned
subsidiary of Greenwich, provided that such Subsidiary agrees in writing to be
bound by all of the terms, conditions and provisions contained herein. Such
assignment may be effected by merging UNC with and into Greenwich simultaneously
with or subsequent to the Effective Time.

                  Section 12.6 Complete Agreement This Agreement, including the
schedules, exhibits and other writings referred to herein or delivered pursuant
hereto, and the Confidentiality Agreement together contain the entire
understanding of the parties with respect to the Merger and the related
transactions and supersede all prior arrangements or understandings with respect
thereto.

                  Section 12.7 Modifications, Amendments and Waivers At any time
prior to the Effective Time of the Merger (notwithstanding any stockholder
approval), if authorized by their respective Boards of Directors and to the
extent permitted by law, (i) the parties hereto may, by written agreement,
modify, amend or supplement any term or provision of this Agreement and (ii) any
term or provision of this Agreement may be waived by the party which is, or
whose stockholders are, entitled to the benefits thereof; provided, however,
that after this Agreement is adopted by UNC's stockholders, no such amendment or
modification shall be made which changes the shares of Greenwich Class B Stock
and cash into which UNC Common Stock and UNC Series B Preferred Stock is to be
converted as provided in this Agreement or which in any way materially adversely
affects the rights of such stockholders, without the further approval of such
stockholders. Any written instrument or agreement referred to in this paragraph
shall be validly and sufficiently authorized for the purposes of this Agreement
if signed on behalf of Greenwich, UNC and Merger Subsidiary by a person
authorized to sign this Agreement.


                                       62
<PAGE>



                  Section 12.8 Counterparts This Agreement may be executed in
two or more counterparts all of which shall be considered one and the same
agreement and each of which shall be deemed an original.

                  Section 12.9 Governing Law This Agreement shall be governed by
the laws of the State of Delaware (regardless of the laws that might be
applicable under principles of conflicts of law) as to all matters, including
but not limited to matters of validity, construction, effect and performance.

                  Section 12.10 Accounting Terms All accounting terms used
herein which are not expressly defined in this Agreement shall have the
respective meanings given to them in accordance with GAAP.

                  Section 12.11 Severability If any term, provision, covenant or
restriction of this Agreement is held by a court of competent jurisdiction or
other authority to be invalid, void, unenforceable or against its regulatory
policy, the remainder of the terms, provisions, covenants and restrictions of
this Agreement shall remain in full force and effect and shall in no way be
affected, impaired or invalidated.



                   [Balance of this page intentionally blank]


                                       63
<PAGE>


         IN WITNESS WHEREOF, Greenwich, Merger Subsidiary and UNC have caused
this Agreement to be signed by their respective officers hereunto duly
authorized, all as of the date first written above.

                          GREENWICH AIR SERVICES, INC.




                          By: /s/ Eugene P. Conese, Sr.
                             -------------------------------------
                          Name:  Eugene P. Conese, Sr.
                          Title:   Chairman and Chief Executive Officer
ATTEST:

                          CONDOR ACQUISITION
CORPORATION




                          By: /s/ Eugene P. Conese, Sr.
                             -------------------------------------
                          Title:   Chairman and Chief Executive Officer
ATTEST:

                          UNC INCORPORATED




                          By: /s/ Dan A. Colussy
                             ------------------------------------
                          Name: Dan A. Colussy
                          Title:  Chairman and Chief Executive Officer
ATTEST:


                                       64
<PAGE>



                                                                       Exhibit B

      [Form of Opinion of Neuberger, Quinn, Gielen, Rubin & Gibber, P.A.,
                           a Professional Corporation]





                                 [Closing Date]





Greenwich Air Services, Inc.

4590 NW 36th Street, Building 23

Miami, Florida 33122



Dear Sirs:



                                 [Introduction]



         1. UNC (i) is a corporation duly organized, validly existing and in
good standing under the laws of the jurisdiction of its incorporation, (ii) has
all requisite power and authority, corporate and otherwise, to own, operate and
lease the properties and assets it now owns, operates and leases and to carry on
its business as now being conducted and (iii) is qualified or licensed to do
business and in good standing in every jurisdiction in which ownership,
operation or lease of property by it or the conduct of its business requires
such qualification or licensing, except for such failures, if any, to be so
qualified and in good standing, which, when taken together with all such
failures, would not in the aggregate have a UNC Material Adverse Effect.

         2. UNC has full corporate power and authority to execute and deliver
the Agreement and to consummate the transactions contemplated thereby. The
Agreement has been duly executed and 



<PAGE>

delivered by UNC and constitutes (assuming due authorization, execution and
delivery of the Agreement by the other parties thereto) a valid, enforceable and
binding agreement of UNC, except to the extent that enforcement may be limited
by bankruptcy, insolvency, reorganization, moratorium, fraudulent conveyance or
other similar laws now or hereinafter in effect relating to equity (regardless
of whether enforceability is considered in a proceeding at law or in equity).



                                       Very truly yours,






<PAGE>




                                                                       Exhibit C





        [Form of Opinion of Greenberg Traurig Hoffman Rosen & Quentel PA]





                                 [Closing Date]





UNC Incorporated.

175 Admiral Cochrane Drive

Annapolis, Maryland 21401



Dear Sirs:



                                 [Introduction]



         1. Each of the Greenwich and Merger Subsidiary (i) is a corporation
duly organized, validly existing and in good standing under the laws of the
jurisdiction of its incorporation, (ii) has all requisite power and authority,
corporate and otherwise, to own, operate and lease the properties and assets it
now owns, operates and leases and to carry on its business as now being
conducted and (iii) is qualified or licensed to do business as a foreign
corporation and in good standing in every jurisdiction in which the ownership,
operation or lease of property by it or the conduct of its business requires
such qualification or licensing, except for such failures to be so qualified and
in good standing, if any, which when taken together with all such other failures
would not in the aggregate have a Greenwich Material Adverse Effect.

<PAGE>


         2. Each of Greenwich and Merger Subsidiary has full corporate power and
authority to execute and deliver the Agreement and to consummate the
transactions contemplated thereby. The Agreement has been duly executed and
delivered by Greenwich and Merger Subsidiary and constitutes (assuming due
authorization, execution and delivery of the Agreement by UNC) a valid,
enforceable and binding agreement of each of Greenwich and Merger Subsidiary,
except to the extent that enforcement may be limited by bankruptcy, insolvency,
reorganization, moratorium, fraudulent conveyance or other similar laws now or
hereinafter in effect relating to equity (regardless of whether enforceability
is considered in a proceeding at law or in equity).


                                              Very truly yours,






<PAGE>




                                February 13, 1997




Board of Directors
Greenwich Air Services, Inc.
4590 NW 36th Street
Miami, Florida 33122




                   Agreement to Vote Shares of UNC Corporation
                   -------------------------------------------

Gentlemen:

                  I, the undersigned stockholder of UNC Incorporated ("UNC"), to
induce Greenwich Air Services, Inc. ("Greenwich") to enter into the Agreement
and Plan of Reorganization, dated as of February 13, 1997, by and among
Greenwich and UNC (the "Agreement"), hereby agree as follows:

                           (a) to vote all shares of UNC Common Stock over which
I exercise voting control (the "Shares") for approval of the Certificate of
Merger at the UNC Stockholders Meeting, unless and until the Board of Directors
of UNC recommends to its stockholders a Superior Proposal or otherwise, in the
exercise of its fiduciary duties upon the advice of counsel, withdraws, amends
or modifies in any manner adverse to Greenwich its favorable recommendation of
the Certificate of Merger;

                           (b) that I will not sell, transfer, pledge, give,
hypothecate, assign or otherwise alienate or transfer (including any transfer by
operation of law or by will or by the laws of descent and distribution) any of
my voting rights with respect to the Shares, except to a person who is a party
to a voting agreement with Greenwich in the form of this letter;

                           (c) irreparable damage would occur in the event any
of the provisions of this agreement were not performed in accordance with the
terms hereof and Greenwich shall be entitled to specific performance of the
terms hereof, in addition to any other remedy at law or in equity;

                           (d) this agreement constitutes the entire agreement
between the parties with respect to the subject matter hereof and supersedes all
other prior agreements and understandings, both written and oral, between the
parties with respect to the subject matter






<PAGE>




hereof, and shall be binding upon the successors, assigns, heirs, executors and
personal representatives (as applicable) of the parties hereto;

                           (e) this agreement will be governed by and construed
in accordance with the laws of the State of Maryland regardless of the laws that
might otherwise govern under applicable principles of conflicts of laws thereof;

                           (f) capitalized terms not otherwise defined herein
shall have the meanings given to them in the Agreement; and

                           (g) this agreement shall automatically terminate upon
the termination (before Closing) of the Agreement.

                  The obligations of the undersigned stockholder of UNC pursuant
to this letter agreement shall terminate upon any termination of the Agreement
in accordance with Section 8.1 thereof.

                                             Very truly yours,



Dated: February 13, 1997                     Signed:__________________________

                                             Print Name:______________________








<PAGE>





                                February __, 1997


Greenwich Air Services, Inc.

_____________________________

_____________________________


Gentlemen:

                  In accordance with Section   of the Agreement and Plan of
Reorganization (the "Agreement") by and among Greenwich Air Services, Inc.
("Greenwich") and UNC Incorporated ("UNC"), and in consideration of the
registration rights granted pursuant to Section 6.13 of the Agreement, I
represent and agree as follows:

          1. I will comply with the Securities Act of 1933, as amended (the
"Securities Act"), and the Securities and Exchange Commission's rules and
regulations thereunder, and will not offer to sell, sell or otherwise dispose of
any shares of Greenwich Class B Stock that I will receive in the Merger except
in compliance with Rule 145 under the Securities Act or following receipt of an
opinion of counsel to Greenwich that the provisions of such rule need not be
observed.

          2. I agree that the certificates for shares of Greenwich Class B Stock
I will receive in the Merger may bear the following legend:

         "Shares represented by this certificate are subject to restrictions as
         to transfer by virtue of provisions of the Securities Act of 1933 and
         the General Rules and Regulations of the Securities and Exchange
         Commission thereunder. Such shares may not be transferred except upon
         compliance with 17 CFR 230.145(d) or the favorable opinion of counsel
         for Greenwich Holdings, Inc. that such transfer will not constitute or
         result in a violation of the Securities Act of 1933."

Execution of this letter agreement by the undersigned shall not constitute an
acknowledgment that the undersigned is an "affiliate" of UNC, as such term is
used under the federal securities laws, for any purpose. Capitalized terms not
otherwise defined herein shall have the meanings given to them in the Agreement.

                                   Very truly yours,

                                   SIGN HERE:_______________________________

                                   PRINT NAME:_____________________________



<PAGE>
                                                                       EXHIBIT 2
NEWS FROM...

(GREENWICH LOGO)

                    GREENWICH AIR SERVICES TO MERGE WITH UNC
                Deal Creates Global Leader in Aviation Services

Miami, Florida - February 14, 1997 - Greenwich Air Services, Inc. (NASDAQ: GASIA
and GASIB) and UNC Incorporated (NYSE: UNC) today announced that they have 
reached a definitive agreement to merge UNC into Greenwich Air Services. The
merger effectively establishes Greenwich Air Services as the world's leader in
commercial aviation engine services and business aviation services, with nearly
$1.8 billion in annual revenues.

Under terms of the Merger Agreement - which is subject to shareholder and 
regulatory approvals as well as financing requirements - shareholders of UNC 
will receive at least $14.00 worth of Greenwich Class B Non-Voting Common Stock 
for each share of UNC stock held. The agreement also provides that if the market
price of Greenwich Class B stock rises above $24.86 per share, UNC shareholders
will receive additional value above $14 per share, up to $16.10 of value for 
each UNC share held. In addition, Greenwich has offered UNC shareholders the 
option of receiving cash in lieu of Greenwich Class B stock up to a maximum of 
50% of the total merger consideration, which UNC estimates at not less than $320
million. The trnsatction is expected to be completed in the spring of 1997.

According to Eugene P. Conese, Chairman and Chief Executive OFficer of Greenwich
Air Services, "the merger of UNC into Greenwich achieves Greenwich's primary
goal of building shareholder value by growing the business both internally,
through the addition of new engine lines and customers, and externally through
strategic acquistions. Our combined engine overhaul operations will be able to 
service more than 100 different engine models and types. We believe there are
synergies between many of the UNC operations and Greenwich's commercial aviation
engine services, government programs, and aeroderivative engine services, 
which should provide significant growth opportunities and cost-savings."

Mr. Conese further stated, "the merger also strengthens Greenwich's three 
existing core marketing and technical groups. Commercial aviation engine 
services supports a majority of the aircraft engine types used by the world's 
leading passenger airlines, overnight package carriers, and freight carriers.
Government services markets engine, aircraft, and accessories overhaul and
repair services to the U.S. military, other government agencies, and 15 foreign
Air Force, Navy, and Army customers. Aeroderivative engine services provides 
repair and overhaul for industrial and marine engines as well as worldwide
<PAGE>
management services for the design, sale, refurbishment, and installation of 
complete gas turbine power plants."

"The merger expands Greenwich's core businesses to include UNC's Garrett 
Aviation Services, a major business aviation services company with full-service
engine, airframe, and avionics capability for business jets and turboprop 
aircraft and affords the opportunities for Greenwich to further penetrate the 
rapidly growing regional airline market," Mr Conese continued. "Further, it 
greatly expands Greenwich's market position in government programs through UNC's
Aviation Services Division. The merger also brings to Greenwich the highly
regarded facilities of UNC's manufacturing businesses: Johnson Technology 
(Michigan); Tri Manufacturing and Tri Remanufacturing (Indiana); Aerostructures 
and UNC Stearns (Washington); and Artex (Texas)."

"This merger represents a unique opportunity to bring together the two largest 
aviation aftermarket companies in the world," Mr. Conese added. "Greenwich has 
a solid reputation as a highly effective industry consolidator and skilled 
integrator. We are an acknowledged leader in providing commercial aviation 
engine services, while UNC is at the forefront of business aviation services and
military/government programs. We believe this merger will also significantly
enhance our ability to capitalize on the outstanding parts repair capabilities
of each of our two companies, as well as build upon UNC's highly regarded parts
manufacturing and repair facilites. We believe the new combined company will 
enjoy significant cost-savings in each of our businesses as well as significant
opportunities for revenue growth through new business partnerships. These
savings and benefits, we believe, will allow this transacation to be accretive
to our shareholders after fiscal 1997."

"We are extremely enthusiastic about the prospects for the combined enterprise,"
commented Dan A. Colussy, Chairman, President, and Chief Executive Officer of 
UNC. "We are effectively combining the two market leaders into the global
industry leader. In addition, we believe this merger will provide positive value
to our shareholders and great long-term benefits to our employees as the 
combined entity finds new opportunities to grow."

Mr. Conese will serve as Chairman and Chief Executive Officer of the combined
company. Eugene P. Conese, Jr., who currently serves as President and Chief 
Operating Officer of Greenwich Air Services, will continue in that position with
the merged entity.

On January 29, Greenwich reported its thirteenth consecutive quarter of record 
results. Net sales for the quarter rose 220.1% to $187.5 million; income from
operations for the quarter was $16.0 million, up 188.9% from first quarter 1996;
and net income rose 161.4% to $5.5 million or $0.32 per share fully diluted.

On February 12, UNC reported record earnings for the fourth quarter and fiscal
year ended December 31, 1996. Net income in 1996 was $6.4 million, or $0.35 per 
share, up from $1.9 million, or $0.11 per share in 1995. Revenues for the year 
were $832.1 million,



                                       2
<PAGE>

up from $536.2 million the previous year. UNC's Common Stock closed at 10 7/8 on
Thursday, February 13th.

The proposed transaction follows major acquisitions by both UNC and Greenwich 
Air Services during the past year. In June 1996, Greenwich completed the $230 
million cash acquisition of the Commercial Engine Services Division of Aviall,
Inc., which has been in the business for more than 50 years. The Aviall 
transaction established Greenwich as the world's leader in turbine engine 
overhaul, with more than $750 million in annualized revenues and the capability
to service a wide range of engine types for commercial and regional airlines
at its nine locations worldwide.

In May 1996, UNC completed its $150 million acquisition of Garrett Aviation 
Services, a leading business aviation services company with full-service engine,
airframe, and avionics capability for business jets and turboprop aircraft.
Garrett, which celebrated its 50th anniversary in 1996, was combined with UNC
Airwork, the company's existing business aircraft operations, to create Garrett
Aviation Services Division. The division had full-year revenues of nearly $600
million in 1996.

Greenwich Air Services, headquartered in Miami, Florida, is the world's largest,
most diversified independent gas turbine engine repair and overhaul company. The
Company provides repair and overhaul services on 14 engine lines and 50 engine
models for 500 customers worldwide. While commercial aviation presently
represents the Company's largest market, Greenwich has seen significant growth
in its government programs unit which supports a variety of military engine 
types and provides program management services for various agencies of domestic
and foreign governments. In addition, Greenwich's industrial and marine unit 
supports a broad range of aeroderivative engines used in a variety of 
applications, including electric utilities, oil and gas pipelines, and 
cogeneration. The Company's subsidiary, GTi provides management services, sale
and worldwide installation and operation of complete gas turbine power plants
with electrical power output ranging from 1 to 120 megawatts.

Greenwich, with 3,300 employees worldwide, has operations at Miami International
Airport; Bradley International Airport in Connecticut; JFK International Airport
in New York; Westover Airport in Massachusetts; Melbourne, Florida; Dallas, Ft.
Worth, and McAllen, Texas; and in Prestwick, Scotland.

UNC, based in Annapolis, Maryland, had 7,000 employees in 78 locations 
throughout the world. UNC is the world's largest independent aviation services
company, and the global leader in business aviation. UNC occupies a unique 
position in the aviation industry by providing a complete array of aviation
services, including airframe maintenance, modification and retrofit services; 
avionics and aircraft interior installations; the overhaul and repair of 
aircraft accessories, aircraft engines and industrial gas turbine engines; the
provision of aircraft maintenance and pilot training contract services, and the
manufacturing and remanufacturing of jet engine and aircraft components.



                                       3
<PAGE>

FORWARD-LOOKING STATEMENTS
Except for the historical information contained in this release, the matters 
discussed are "forward-looking statements" within the meaning of federal 
securities laws. For a variety of reasons, actual results could differ 
materially from those described in these statements. Among the factors that 
could cause actual results to differ from predicted or expected results are the
following: the company's dependence on a relatively small number of suppliers
and vendors, which could hamper the company's ability to maintain appropriate
inventory levels and meet customer demand; the possibility that unforeseen
events could impact the company's ability to provide prompt and efficient 
service to its customers; existing competition from national and regional 
competitors, which could result in pricing and other pressures on profitability
and market share. Consequently, the reader is cautioned to consider all forward-
looking statements in the light of the risks to which they are subject.

                                      ###

For More Information, Contact:

Greenwich Air Services, Inc:
Eugene P. Conese, Jr., President                  (305)526-7095
Robert J. Vanaria, C.F.O                          (305)870-8090
Sara L. Wilkins, Director of I.R.                 (305)870-7910 or
                                                  (800)736-0800, ext. 7910

UNC:
Bob Pevenstein, C.F.O.                           (410)266-7333
Mary Conger, Director of I.R.                     (410)266-7333

** Please visit Greenwich Air's Web site at www.businesswire.com/cnn/gasia.htm

** All of Greenwich's news releases may also be accessed free of charge through
Business Wire's News-on-Demand fax service. Please call (888)329-5518 (toll-
free) for a complete listing.


                                        4



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