UNITED INDUSTRIAL CORP /DE/
10-Q, 1994-08-12
MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES
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<PAGE>

                          SECURITIES AND EXCHANGE COMMISSION
                               Washington, D.C.  20549
                                                      

                                      FORM 10-Q



     (Mark One)

     [X]  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
          EXCHANGE ACT OF 1934 

          For the quarterly period ended  June 30, 1994                   

     [ ]  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
          EXCHANGE ACT OF 1934

          For the transition period from                 to                   

                          Commission file number  #1-4252  

                            UNITED INDUSTRIAL CORPORATION
                (Exact name of registrant as specified in its charter)


                      DELAWARE                            95-2081809     
           (State or other jurisdiction of     (I.R.S. Identification No.)
            incorporation or organization)

                       18 East 48th Street, New York, NY 10017
                       (Address of principal executive offices)

     Registrant's telephone number, including area code      (212) 752-8787


                                    Not Applicable
                 Former name, former address and former fiscal year, 
                            if changed since last report.



          Indicate by check mark whether the registrant (1)has filed all
        reports required to be filed by Section 13 or 15(d) of the Securities
        Act of 1934 during the preceding 12 months (or for such shorter period
        that the registrant was required to file such reports), and (2) has
        been subject to such filing requirements for the past 90 days.
        Yes  X    No    

          Indicate the number of shares outstanding of each of the issuer's
        classes of common stock, as of the latest practicable date. 
        12,256,693 shares of common stock as of August 1, 1994.
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                            UNITED INDUSTRIAL CORPORATION





                                        INDEX







                                                                        Page #
     Part I - Financial Information                              

        Item 1.  Financial Statements
          
               Consolidated Condensed Balance Sheet - Unaudited
               June 30, 1994 and December 31, 1993                         1

               Consolidated Condensed Statement of Operations -
               Three Months and Six Months Ended June 30, 1994 and 1993    2

               Consolidated Condensed Statement of Cash Flows
               Six Months Ended June 30, 1994 and 1993                     3

               Notes to Consolidated Condensed Financial Statements      4 - 5


        Item 2.  Management's Discussion and Analysis of
                 Financial Condition and Results of Operation              6



     PART II - Other Information                                           7

            
<PAGE>
<PAGE>
                                    PART I - FINANCIAL INFORMATION
                             UNITED INDUSTRIAL CORPORATION & SUBSIDIARIES
<TABLE>

                           CONSOLIDATED CONDENSED BALANCE SHEET - UNAUDITED
                                        (Dollars in Thousands)
<CAPTION>


                                                                 June 30        December 31
                                                                  1994             1993    
      ASSETS
      <S>                                                     <C>               <C>
      Current Assets
            Cash & cash equivalents                             $  2,638          $  3,906
            Note receivable                                        8,540             8,540
            Trade receivables                                     39,007            45,233
            Inventories
              Finished goods & work-in-process                    47,178            46,087
              Materials & supplies                                 3,697             3,776
                                                                  50,875            49,863
            Recoverable federal income taxes                         (83)            3,618
            Deferred income taxes                                  8,650             8,796
            Prepaid expenses & other current assets                2,541             2,480
            Assets held for sale                                     -               5,439
                  Total Current Assets                           112,168           127,875

      Other assets                                                31,615            23,096
      Note receivable                                                -               8,540
      Deferred income taxes                                       10,365            10,365

      Property & equipment - less allowances
       for depreciation ($80,480 & $75,714)                       44,865            46,635
                                                                $199,013          $216,511
      LIABILITIES AND SHAREHOLDERS' EQUITY 

      Current liabilities
            Notes payable to banks                              $  3,000          $ 20,700
            Accounts payable                                       9,182             9,634
            Accrued employee compensation & taxes                  8,757             7,598
            Customer advances                                      8,087             5,725
            Other liabilities                                      4,545             6,370
            Provision for contract losses                          9,387            10,232
            Deferred income taxes                                  3,398             3,493
            Estimated restructuring liability                        500               750
                  Total Current Liabilities                       46,856            64,502

      Long-term liabilities (less current maturities)             28,897            27,851
      Deferred income taxes                                       16,584            18,645
      Accumulated postretirement benefit obligation               20,576            20,159

      Shareholders' Equity
            Common stock $1.00 par value
            Authorized - 15,000,000 shares; outstanding
            12,258,693 shares (net of shares in treasury)         14,374            14,374
            Additional capital                                    95,451            97,167
            Retained earnings (deficit)                           (5,949)           (8,411)    
      Treasury stock, at cost, 2,115,455 shares                  (16,875)          (16,875)
            Minimum pension liability adjustment                    (901)             (901)

                                                                  86,100            85,354

                                                                $199,013          $216,511
                                                    
      See accompanying notes
</TABLE>
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<PAGE>
                             UNITED INDUSTRIAL CORPORATION & SUBSIDIARIES

<TABLE>
                            CONSOLIDATED CONDENSED STATEMENT OF OPERATIONS
                            (Dollars in thousands except per share amounts)

<CAPTION>

                                                       Three Months Ended     Six Months Ended 
                                                            June 30                June 30 
       
                                                        1994      1993         1994      1993 

      <S>                                           <C>       <C>          <C>       <C>
      Net Sales                                      $ 42,216  $ 62,995     $ 92,292  $120,394
      Operating costs & expenses

        Cost of sales                                  30,531    47,714       68,618    97,321
        Selling & administrative                       10,721    13,092       21,002    24,422
        Other income - net                               (127)      (80)        (332)     (313)
        Interest expense                                  875       725        1,471     1,393
        Interest income                                  (537)     (709)        (926)   (1,524)
        Provision for restructuring charge             (1,554)       -        (1,554)   23,000

                                                       39,909    60,742       88,279   144,299
                  
      Income (loss) before income taxes and
       cumulative effect of accounting changes          2,307     2,253        4,013   (23,905)
      Income taxes (benefit)                              899       528        1,551    (8,179)

      Income (loss) before cumulative
       effect of accounting changes                     1,408     1,725        2,462   (15,726)  


      Cumulative effect as of December
       31, 1992 of changes in method of
       accounting for:
        Post retirement benefits other
          than pensions, net of taxes                     -         -            -     (12,890) 
        Income taxes                                      -         -            -      13,884

      Net income (loss)                              $  1,408  $  1,725     $  2,462  $(14,732)

      Earnings (loss) per share:

      Earnings (loss) per share before 
       cumulative effect of accounting changes         $  .11    $  .14       $  .20    $(1.28) 
      Cumulative effect of accounting 
       changes for:
        Postretirement benefits other than pensions       -         -            -       (1.05) 
        Income taxes                                      -         -            -        1.13

        Net earnings (loss) per share                  $  .11    $  .14       $  .20    $(1.20)


      See accompanying notes
</TABLE>
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<PAGE>
                             UNITED INDUSTRIAL CORPORATION & SUBSIDIARIES

<TABLE>
                            CONSOLIDATED CONDENSED STATEMENT OF CASH FLOWS
                                        (Dollars in Thousands)
<CAPTION>


                                                                     SIX MONTHS ENDED JUNE 30  

                                                                      1994             1993* 
      <S>                                                        <C>              <C>   
      OPERATING ACTIVITIES
      Net income (loss)                                            $ 2,462         $   (14,732)
      Adjustments to reconcile net income 
       (loss) to net cash provided by (used in) 
       operating activities:
      Cumulative effect of changes in accounting for:
        Postretirement benefits                                        -                20,054
        Income taxes                                                   -               (13,884)
        Depreciation and amortization                                2,815               3,878
        Deferred income taxes                                       (2,010)             (9,043)
        Restructuring charge                                           -                23,000
        Expenses charged to restructuring reserve                      -                (4,638)
        Increase (decrease) in contract loss provision                (845)              6,092
        Changes in operating assets and liabilities:
        Decrease in accounts receivable                              4,859              13,822
        Decrease (increase) in inventories                          (1,175)             10,460
        Decrease (increase) in prepaid expenses and 
         other current assets                                        6,003                 (84)
        Decreases in accounts payable,
          accruals, advances and other                              (2,217)            (14,524)
        Increase (decrease) in federal income taxes                  3,697             (10,230)
        Increase (decrease) in long-term liabilities                  (483)              1,657
        
        Net Cash Provided by Operating Activities                   13,106              11,828


      INVESTING ACTIVITIES
      Decrease in note receivable                                    8,540               8,541
      Purchase of property and equipment                              (535)             (1,979)
      Increase in other assets - net                                (2,691)             (6,817)
      Acquisition of business - net of 
       cash received                                                (2,218)                -  

        Net Cash Provided by (used in) Investing Activities          3,096                (255)


      FINANCING ACTIVITIES
      Increase in long-term liabilities                              1,946               1,580
      Proceeds from borrowings                                       6,000               6,000
      Payments on long-term debt & borrowings                      (23,700)            (16,579)
      Dividends                                                     (1,716)             (2,574)

        Net Cash Used in Financing Activities                      (17,470)            (11,573)

        Decrease in Cash and Cash Equivalents                       (1,268)                -  

        Cash and cash equivalents at beginning of period             3,906               2,608

        Cash and cash equivalents at end of period                $  2,638            $  2,608


      See accompanying notes
<FN>
      * Restated to conform to current classifications
</TABLE>
<PAGE>
<PAGE>
                 UNITED INDUSTRIAL CORPORATION AND SUBSIDIARIES


     Notes to Consolidated Condensed Financial Statements

     June 30, 1994


     Note A - Basis of Presentation

     The accompanying unaudited consolidated condensed financial statements
     have been prepared in accordance with generally accepted accounting
     principles for interim financial information and with the instructions
     to Form 10-Q and Rule 10-01 of Regulation S-X.  Accordingly, they do
     not include all of the information and footnotes required by generally
     accepted accounting principles for complete financial statements.  In
     the opinion of management, all adjustments (consisting of normal
     recurring accruals) considered necessary for a fair presentation have
     been included.  Operating results for the six month period ended June
     30, 1994 are not necessarily indicative of the results that may be
     expected for the year ending December 31, 1994.  For further
     information, refer to the consolidated financial statements and
     footnotes thereto included in the Company's annual report on Form 10-K
     for the year ended December 31, 1993.

     Note B - Restructuring Charge 

     The Consolidated Condensed Statement of Operations for the six months
     ended June 30, 1993 includes a restructuring charge of $23 million
     ($14.7 million or $1.20 per share, net of income tax benefit).  The
     charge covered the anticipated cost of organizational and product line
     changes, consolidation of facilities, and work force reductions of
     approximately 300 at AAI and its four subsidiaries.  A major portion
     of the charge covered the curtailment of operations of AAI/MICROFLITE
     in Binghamton, New York, due to lack of significant new orders. 
     AAI/MICROFLITE was acquired in 1991.  During the six months ended June
     30, 1993, AAI/MICROFLITE sales amounted to $646,000, and losses were
     $1,604,000 or $.13 per share.  At June 30, 1994, the restructuring
     program was substantially completed and only $500,000 related to the
     consolidation and discontinuation of certain manufacturing activities,
     had not been expended.  At December 31, 1993 the restructuring charge
     was reduced from $23 million to $22.5 million.

     Note C - Assets Held for Sale

     Assets held for sale of $5,439,000 included on the consolidated
     balance sheet at December 31, 1993, relate to the remaining assets of
     AAI/MICROFLITE, including the office/manufacturing complex.  The
     company sold these assets in 1994.  The profit of $1,304,000 is
     included in the provision for restructuring in the Consolidated
     Condensed Statement of Operations.

     Note D - Dividends

     A quarterly dividend of $.07 per share is payable August 31, 1994 and
     additional capital has been reduced.  

     Note E - Stock Options

     In May 1994, the shareholders approved the 1994 Stock Option Plan,
     which provides for the granting of 600,000 stock options to key
     employees.  Options granted may be either "incentive stock options,"
     within the meaning of Section 422A of the Internal Revenue Code, or
     non-qualified  options.

     The options are granted at market value at the date of grant and are
     exercisable over a period determined by the Board of Directors, but no
     longer than ten years after the date they are granted.

     On June 21, 1994 options were granted for 91,000 shares at an option
     price per share of $4.75.


<PAGE>
<PAGE>


     Note F - Legal Proceedings
      
     The company, along with various other parties, has been named in three
     claims (including two tort claims, one of which alleges class action)
     relating to environmental matters based on allegations partially
     related to a predecessor's operations.  These tort actions seek
     recovery for personal injury and property damage among other damages.

     The company owned and operated a small facility at a site in the State
     of Arizona that manufactured semi-conductors between 1959 and 1960. 
     All such operations of the company were sold prior to 1962.  This
     facility may have used trichloroethylene ("TCE") in small quantities. 
     However, to date, there is no evidence that this facility released or
     disposed of TCE at this site.

     On May 18, 1993, the State of Arizona filed suit against the company
     seeking the recovery of investigative costs, injunctive relief to
     require the company to perform a Remedial Investigation and
     Feasibility Study, and ultimately to require the remediation of
     alleged soil and groundwater contamination at and near a certain
     industrial site.  In response to the State's claim the company filed a
     third party complaint that seeks contribution from seventy-five
     identified possible responsible parties that are believed to have used
     solvents on and around the company's former site. 

     Management intends to vigorously contest these actions and believes
     that the resolution of these actions will not be material to the
     company.
       
     The company is involved in various other law suits and claims,
     including certain other environmental matters, arising out of the
     normal course of its business.  In the opinion of management, the
     ultimate amount of liability, if any, under pending litigation,
     including claims described above, will not have a materially adverse
     effect on the consolidated financial position of the company.   

     Note G - Acquisitions

     On January 18, 1994, the company purchased all the outstanding shares
     of  Symtron Systems, Inc. (Symtron), a producer of fire training
     simulators for the military and commercial markets.  The purchase
     price consists of an initial payment of $1,500,000, a subsequent
     payment of $500,000, assumption of certain liabilities of
     approximately $5,900,000 and contingent payments, not to exceed
     $1,000,000, based on the net worth at specified dates and future
     profits on contracts existing at the acquisition date.  Additionally,
     contingent amounts are payable if certain pretax profits, as defined
     in the purchase agreement, are earned for each of the years in the
     five year period ending December 31, 1998.  Funds generated from
     operations and an existing line of credit were utilized to finance the
     purchase of Symtron.

     The acquisition is accounted for as a purchase, accordingly, the
     operations of Symtron are included in the company's 1994 financial
     statements.  Symtron had sales of $2,600,000 and the profit was not
     material in the six months ending June 30, 1994. 

     NOTE H - Credit Arrangements

     AAI has not borrowed under the $7,500,000 credit facility at June 30,
     1994 and has letters of credit outstanding of approximately $678,000. 
     This credit facility, expires August 20, 1994.  Management expects to
     refinance this facility with other lenders.  The terms of such
     financing, including security, interest rates, guarantees and
     covenants, may differ from those provided for under this credit
     facility.
       
     As part of the credit facility, AAI granted to the lender a first
     priority security interest in all accounts receivable of AAI.  UIC-
     Del. Corporation, a subsidiary of UIC, was added as an additional
     guarantor of any AAI bank debt.  In addition to the lender, the
     security interests are subject to the rights of the present insurance
     company noteholders.

<PAGE>
<PAGE>

     Management's Discussion and Analysis of Financial Condition 

     Net sales for the first six months of 1994 were $28,102,000 lower than
     for the prior  year and $20,779,000 lower for the three months period
     ending June 30, 1994 than the prior period.  Sales decreased in all
     segments in both periods, except for the 3 months ending June 30, 1994
     the plastic products segment increased slightly.  The major decrease
     was in the defense segment due to a lack of new government orders
     caused by the Government's reduced budget.  Symtron sales of
     $2,600,000 are included.

     The net loss for the first six months of 1993 includes a restructuring
     charge at the AAI Corporation subsidiary of $23 million ($14.7
     million, or $1.20 per share net of income tax benefit).  The charge
     covered the anticipated cost of organizational and product-line
     changes, the consolidation of facilities, and work force reductions of
     approximately 300 in AAI and its four subsidiaries.  A major portion
     of the charge covered the curtailment of operations of AAI/MICROFLITE
     in Binghamton, New York due to lack of significant new orders. 
     AAI/MICROFLITE was acquired in 1991.  Predominately a defense
     contractor, AAI is in the process of realigning its business to become
     more competitive in the marketplace with its current customers and to
     enter new non-DOD markets.  Net loss included a loss of $1,604,000
     ($.13 per share), from operations of AAI/MICROFLITE, in the first six
     months of 1993.

     In the six month period the cost of sales as a percent of sales
     decreased from 80.8 in 1993 to 74.4 in 1994 and from 75.7 in 1993 to
     72.3 in 1994 for the three months period primarily due to the
     recognition of losses of approximately $10 million and $4 million on
     certain long-term contracts for the six and three month periods in
     1993, respectively.
        
     The company sold $5,439,000 of the remaining AAI/MICROFLITE assets in
     1994.  The profit of $1,304,000 is included in the provision for
     restructuring in the Consolidated Condensed Statement of Operations.

     Cash and cash equivalents decreased by $1,268,000 from December 31,
     1993.  See Consolidated Condensed Statement of Cash Flows.  The
     restructuring charge ($23 million), the accumulated postretirement
     benefit obligation ($20 million) and the change in the deferred
     federal income taxes due to a change in accounting method ($13.9
     million) are non-cash items in 1993 and are included in the
     Consolidated Condensed Statement of Cash Flows as adjustments to
     reconcile net income to net cash provided or used in operating
     activities.  At December 31, 1993 the restructuring charge was reduced
     from $23 million to $22.5 million.

     AAI has not borrowed under the $7,500,000 credit facility at June 30,
     1994 and has letters of credit outstanding of approximately $678,000. 
     This credit facility expires August 20, 1994.  Management expects to
     refinance this facility with other lenders.  The terms of such
     financing, including security, interest rates, guarantees and
     covenants, may differ from those provided for under this credit
     facility.

     As part of the credit facility, AAI granted to the lender a first
     priority security interest in all accounts receivable of AAI.  UIC-
     Del. Corporation, a subsidiary of UIC, was added as an additional
     guarantor of any AAI bank debt.  In addition to the lender, the
     security interests are subject to the rights of the present insurance
     company noteholders.

     Effective January 1, 1993 the company adopted FASB Statement No. 109
     (see Note B of the Condensed Financial Statement) decreasing net loss
     by $13.9 million or $1.13 per share.  Deferred federal income taxes -
     current was reduced $16.4 million and non-current was increased $2.5
     million.

     Effective January 1, 1993 the company adopted FASB Statement No. 106
     (see Note B of the Condensed Financial Statement) increasing net loss
     by $12.9 million or $1.05 per share.  

<PAGE>
<PAGE>



                 UNITED INDUSTRIAL CORPORATION AND SUBSIDIARIES



     PART II - Other Information



          Item 6 - Exhibits and Reports on Form 8-K

          (a)  Exhibits

               10 a - Signet Bank/Maryland letter, dated May 13, 1994,
                      re: Credit Facilities to AAI

               10 b - Security Agreement dated May 27, 1994 
                      by AAI Corporation and Signet Bank/Maryland

               10 c - Guaranty Agreement dated May 27, 1994 by UIC-Del.
                      Corporation and Signet Bank/Maryland.

               11 -   Computation of Earnings per share

               27 -   Financial Data Schedule

          (b)  The Registrant did not file any reports on Form 8-K during
               the quarter ended June 30, 1994.
            


































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                                    SIGNATURE




     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, thereunto duly authorized.




                                           UNITED INDUSTRIAL CORPORATION



     Date August 12, 1994               By:/s/ Howard M. Bloch         
                                           Howard M. Bloch, Treasurer and
                                           Chief Financial Officer





































      
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<PAGE>



                 UNITED INDUSTRIAL CORPORATION AND SUBSIDIARIES


                        INDEX OF EXHIBITS FILED HEREWITH







     Exhibit No.                                                       


          10 a -  Signet Bank/Maryland letter, dated May 13, 1994, 
                  re: Credit Facilities to AAI                         
       
          10 b -  Security Agreement dated May 27, 1994 by 
                  AAI Corporation and Signet Bank/Maryland             


          10 c -  Guaranty Agreement dated May 27, 1994 by UIC-Del. 
                  Corporation and Signet Bank/Maryland                 

          11 -    Computation of Earnings per share                    

          27 -    Financial Data Schedule

                                          

<PAGE>

          Exhibit 10a -  Signet Bank letter, dated May 13, 1994, 
                    re: Credit Facilities to AAI - Page 12


                             [Letterhead of SIGNET BANK]


                                             May 13, 1994

          BY HAND DELIVERY

          Mr. Richard R. Erkeneff
          President
          AAI Corporation
          P. O. Box 126
          Hunt Valley, Maryland  21030

                  Re: Signet Bank/Maryland Credit Facilities to AAI

          Dear Mr. Erkeneff:

               By letter to Paul Michaud dated April 4, 1994, the
          undersigned memorialized previous conversations held with Mr.
          Michaud pursuant to which AAI was advised that the availability
          of additional credit under our Amended and Restated Loan
          Agreement dated as of August 11, 1992, as amended (the "Loan
          Agreement") would terminate on April 30, 1994, and that all
          outstanding "Obligations" (as defined in the Loan Agreement)
          would be due and payable on such date.  As of April 30, the
          obligations of AAI to Signet Bank had not been satisfied, and AAI
          has requested Signet Bank to continue extending credit under the
          Loan Agreement in order to provide sufficient additional time to
          arrange for replacement financing.

               The purpose of this letter is to advise you of the terms
          under which Signet Bank is willing to extend additional credit to
          AAI under the Loan Agreement.  Capitalized terms used in this
          letter without definition which are defined in the Loan Agreement
          shall have the same meanings assigned to such terms in the Loan
          Agreement.

               The Lender hereby consents to an extension of the
          Termination Date to August 20, 1994 (the "Termination Date"),
          upon the following terms and conditions:

               1.   From and after the date hereof, the Maximum Loan Amount
          shall be $7,500,000.00 minus the face amount of all issued and
          outstanding Letters of Credit; provided, however, that for
          purposes of determining whether the Maximum Loan Amount has been
          exceeded, Letter of Credit S1881 and Letter of Credit S1764 (the
          "Excluded Letters of Credit") shall be excluded.

               2.   From and after the date hereof, the Maximum Letter of
          Credit Facility Amount shall be equal to the amount available to
          be drawn as of the date of this letter under the currently
          outstanding Letters of Credit (other than the Excluded Letters of
          Credit).

<PAGE>
<PAGE>
               3.   On or before May 20, 1994, pursuant to written
          agreements in form and substance satisfactory to the Lender (a)
          the Borrower shall grant to the Lender a first priority security
          interest in all accounts receivable of the Borrower, and (b) UIC
          shall grant to the Lender a first priority security interest in a
          certain note receivable with a current outstanding principal
          balance of $8,540,000.00 which is further described in footnote 4
          to the consolidated financial statements of UIC in the 1993
          Annual Report of UIC, together with all rights of UIC under any
          and all letters of credit and other collateral securing the
          repayment thereof.  The foregoing security interests to be
          granted to the Lender shall be subject only to the rights of
          Principal Mutual Life Insurance Company, The Travelers Insurance
          Company and The Travelers Indemnity Company of Rhode Island
          (collectively, the "Creditor") under the Inter-Creditor Agreement
          dated August 11, 1992, by and among the Lender, the Creditor, the
          Borrower and UIC.  The Borrower and UIC shall execute and deliver
          to the Lender upon the Lender's demand such security agreements,
          financing statements and other documents and instruments as the
          Lender may reasonably require in order to establish and perfect
          the aforementioned security interest.

               4.   The Borrower shall pay to the Lender, concurrently with
          its acceptance hereof, an extension fee in the amount of
          $75,000.00 (the "Extension Fee"); provided, however, that the
          Borrower shall be entitled to a rebate of such Fee in the event
          that all outstanding obligations are satisfied more than thirty
          days prior to the Termination Date.  The amount rebated to the
          Borrower shall equal (a) $50,000.00 if the Obligations are
          satisfied more than sixty days prior to the Termination Date, and
          (b) $25,000.00 if the Obligations are satisfied more than thirty
          (but less than sixty-one) days prior to the Termination Date. 
          The Obligations of the Borrower with respect to outstanding
          Letters of Credit shall not be deemed satisfied unless (i)
          replacement letters of credit have been issued by another
          institution with the result that the Letters of Credit shall have
          been terminated and all of the Lender's obligations thereunder
          discharged, or (ii) the Lender shall have been provided, pursuant
          to a written agreement or agreements satisfactory to the Lender
          and with the concurrence of the Creditor, cash collateral for
          such obligations in an amount not less than the maximum potential
          reimbursement an other obligations of the Borrower in connection
          with such Letter of Credit.

               5.   Each Letter of Credit currently outstanding or issued
          after the Borrower's acceptance hereof shall be subject to the
          requirement that if it is to extend beyond the Termination Date,
          on or before such Termination Date the Borrower shall (a) have
          arranged for the issuance of a replacement letter of credit by
          another institution with the result that such Letter of Credit
          shall be terminated and all of the Lender's obligations
          thereunder discharged, or (b) have provided, pursuant to a
          written agreement or agreements satisfactory to the Lender and
          with the concurrence of the Creditor, cash collateral in form and
          substance satisfactory to the Lender in an amount not less than
          the maximum potential reimbursement and other obligations of the
          Borrower in connection with such Letter of Credit.  The
          requirements of this Paragraph 5 are consistent with the terms
          and conditions of our letter agreement dated August 2, 1993.
<PAGE>
<PAGE>
               6.   The Borrower shall pay on the demand of the Lender all
          expenses paid or incurred by the Lender (including the fees and
          expenses of its counsel) in connection with (a) the preparation
          and negotiation of this letter agreement and all other documents
          and agreements referred to herein, and (b) all future matters
          arising in connection with the Lender's credit extensions to the
          Borrower.

               Until the terms under which the Lender is willing to extend
          credit to the Borrower have been agreed upon, no additional
          credit will be extended to the Borrower.  The offer contained in
          this letter shall expire on May 16, 1994 unless previously
          accepted by the Borrower and UIC.  Acceptance shall be indicated
          by the Borrower and UIC signing this letter in the space provided
          below, and returning this letter, together with payment of the
          Extension Fee, to the Lender.  An additional copy of this letter
          is also enclosed for your records.

               In the event the Borrower does not find the proposed terms
          of extension as described above to be acceptable, the Borrower
          should arrange for the satisfaction of the outstanding
          Obligations (including, without limitation, the satisfaction of
          the outstanding Letters of Credit on the terms outlined in this
          letter) on or before May 16, 1994.

               Please call (332-5144) if you should have any further
          questions or comments concerning this matter.

                                             Yours truly,

                                             /S/ David A. Bauereis

                                             David A. Bauereis
                                             Vice President

          96/nea

          Enclosure

          cc:  Mr. Paul J. Michaud
               Kevin G. Gralley, Esquire

          ACCEPTED AND AGREED THIS ____
          DAY OF MAY, 1994

          AAI CORPORATION
          AAI ENGINEERING SUPPORT, INC.
          AAI MANUFACTURING ASSEMBLY, INC.
          AAI SYSTEMS MANAGEMENT, IN.
          AAI MEDICAL CORPORATION
          SETI, INC.
          AAI/ACL TECHNOLOGIES, INC.
          AAI MICROFLITE SIMULATION INTERNATIONAL CORPORATION

          By:     /s/ Richard Ray Erkeneff
             Name: RICHARD RAY ERKENEFF
             Title:President & CEO AAI 

          UNITED INDUSTRIAL CORPORATION

          By:   /s/ Howard M. Bloch       
              Name: HOWARD M. BLOCH  
              Title:Vice President -Treasurer 





<PAGE>
     


                               SECURITY AGREEMENT
                               ------------------
               THIS SECURITY AGREEMENT ("Agreement") is made this 27th day
     of May, 1994, by and among AAI CORPORATION, a Maryland corporation
     ("AAI"), AAI ENGINEERING SUPPORT, INC., a Maryland corporation
     ("Engineering"), AAI MANUFACTURING ASSEMBLY, INC., a Maryland
     corporation ("Assembly"), AAI SYSTEMS MANAGEMENT, INC., a Maryland
     corporation ("Systems"), AAI MEDICAL CORPORATION, a Maryland
     corporation ("Medical"), SETI, INC., a Pennsylvania corporation
     ("Seti"), AAI/ACL TECHNOLOGIES, INC., a Maryland corporation
     ("AAI/ACL"), and AAI MICROFLITE SIMULATION INTERNATIONAL CORPORATION,
     a Maryland corporation ("AAI MICROFLITE"), jointly and severally (AAI,
     Engineering, Assembly, Systems, Medical, Seti, AAI/ACL and AAI
     MICROFLITE jointly and severally, individually and collectively,
     "Debtor"), and SIGNET BANK/MARYLAND ("Secured Party").

                                    RECITALS
                                    --------

               Reference is made to that certain Amended and Restated Loan
     Agreement dated August 11, 1992, as amended (the "Loan Agreement"), by
     and among Debtor and Secured Party pursuant to which Secured Party
     extended credit to Debtor in an original principal amount not to
     exceed Thirty Million Dollars ($30,000,000.00).  The "Termination
     Date" as defined in the Loan Agreement has occurred without extension
     by Secured Party, and all of the "Obligations" as therein defined have
     become due and payable.  Debtor has requested Secured Party to extend
     the Termination Date until August 20, 1994, and as a condition to
     consenting to such request Secured Party has, inter alia, required the
                                                   ----------
     execution hereof by Debtor.

               NOW, THEREFORE, in consideration of the mutual covenants
     contained herein, Debtor and Secured Party do hereby agree as follows:

               1.  CONSTRUCTION AND DEFINITION OF TERMS
                   ------------------------------------
                    Capitalized terms used herein without definition which
     are defined in the Loan Agreement shall have the meanings assigned to
     them in the Loan Agreement.  All terms used herein without definition
     which are not defined in the Loan Agreement and which are defined by
     the Maryland Uniform Commercial Code shall have the meanings assigned
     to them by the Maryland Uniform Commercial Code unless and to the
     extent varied by this Agreement.  Whenever the phrase "satisfactory to
     Secured Party" is used in this Agreement such phrase shall mean
     "satisfactory to















     NYFS11...:\95\78495\0001\7120\FRM80394.L40
<PAGE>

<PAGE>
     

     Secured Party in its sole discretion."  The use of any gender or the
     neuter herein shall also refer to the other gender or the neuter and
     the use of the plural shall also refer to the singular, and vice
     versa.  In addition to the terms defined elsewhere in this Agreement,
     unless the context otherwise requires, when used herein, the following
     terms shall have the following meanings:

                    "Collateral" shall mean all of Debtor's Receivables,
     all property and funds of Debtor, both now owned and hereafter
     acquired, now or hereafter in Secured Party's possession, all property
     and assets of Debtor in or on which Secured Party has, or may in the
     future acquire or be granted, a Lien, whether related or unrelated to
     this Agreement, whether or not now contemplated, whether or not any
     instrument or agreement relating thereto specifically refers to this
     Agreement, and all proceeds (cash and non-cash, including insurance
     proceeds), products, substitutions, renewals and replacements of all
     of the foregoing in any form whatsoever and all books, records and
     data processing materials in any form (including tapes, disks and the
     like) documenting, describing or in any way relating to any or all of
     the foregoing, whether in the possession of Debtor or any other
     Person.

                    "Event of Default" shall mean any of the events
     described in Section 6 hereof.

                    "Inter-Creditor Agreement" shall mean that certain
     Inter-Creditor Agreement made as of August 11, 1992, by and among
     Secured Party, Principal Mutual Life Insurance Company, The Travelers
     Insurance Company, The Travelers Indemnity Company of Rhode Island,
     AAI and UIC, as the same may hereafter be amended, supplemented or
     otherwise modified from time to time.

                    "Permitted Liens" shall mean (a) Liens of Secured
     Party, (b) Liens permitted pursuant to the Inter-Creditor Agreement,
     and (c) Liens specifically consented to by Secured Party in writing.

                    "Receivables" shall mean all of Debtor's present and
     future accounts, notes, instruments, documents, chattel paper, tax
     refunds, contract rights, general intangibles, goodwill, judgments,
     orders, awards and decrees in favor of Debtor, causes of action in
     favor of Debtor, all goods returned, repossessed, or stopped in
     transit the sale, lease or other disposition of which contributed to
     the creation of any account, instrument or chattel paper, all present
     and future rights of Debtor to the payment of money due or to become
     due to Debtor for





























     
<PAGE>

<PAGE>
     

     any reason whatsoever, whether or not such right to payment has been
     or is to be earned by any performance and howsoever such right to
     payment may be evidenced, whether by open account, instrument, note,
     draft, chattel paper, judgment, order, award, decree or otherwise, all
     rights which Debtor may at any time have, by law or agreement, against
     any account debtor, all rights which Debtor may at any time have, by
     law or agreement, against any other obligor obligated to make such
     payment and all rights and Liens which Debtor may at any time have, by
     law or agreement, against any property of any account debtor or
     against any property of any such other obligor; provided, however,
     that notwithstanding the foregoing, Receivables shall not include (a)
     any property now or hereafter abandoned or returned by the United
     States government which AAI is contractually obligated to deliver to
     Reflectone, Inc., or (b) any present or future rights of Debtor with
     respect to any patents, copyrights, franchises, trade names,
     trademarks, or computer software (collectively, "Excluded Intellectual
     Property") except to the extent such rights relate to (x) proceeds of
     such Excluded Intellectual Property which otherwise would fall within
     the foregoing definition of Receivables, or (y) computer software
     consisting of the books, records or data processing materials of
     Debtor documenting or describing the Receivables and/or any account
     debtor or other obligor of Debtor or in any way used or useful in the
     collection or enforcement of the Receivables.

               2.  SECURITY
                   --------
                    2.01  Security Interest.  As security for the payment
                          -----------------
     and performance of all of the Obligations, whether or not any
     instrument or agreement relating to any Obligation specifically refers
     to this Agreement or the security interest created hereunder, Debtor
     hereby assigns, pledges and grants to Secured Party a continuing
     security interest in the Collateral.  Secured Party's security
     interest shall continually exist until (a) all Obligations have been
     paid in full, and (b) there exists no commitment by Secured Party
     which could give rise to any Obligations, whether or not all
     Obligations shall at any time or from time to time be reduced to zero. 
     Debtor shall make notations, satisfactory to Secured Party, on its
     books and records disclosing the existence of Secured Party's security
     interest in the Collateral.  Secured Party shall have no liability or
     duty, either before or after the occurrence of an Event of Default
     hereunder, on account of loss of or damage to, or to collect or
     enforce any of its rights against, the Collateral, or to preserve any
     rights against account debtors or other parties with prior interests
     in the Collateral, the sole duty of Secured Party in this regard being
     to exercise reasonable




























     
<PAGE>

<PAGE>
     

     care with respect to tangible Collateral in its actual possession.

                    2.02  Covenants and Representations Concerning
                          ----------------------------------------
     Collateral.  With respect to all of the Collateral, Debtor covenants,
     ----------
     warrants and represents that:

                         (a)  No financing statement covering any of the
     Collateral is on file in any public office or land or financing
     records except for financing statements in favor of Secured Party and
     financing statements with respect to any Permitted Liens and Debtor is
     the legal and beneficial owner of all of the Collateral, free and
     clear of all Liens, except for Permitted Liens.

                         (b)  The security interest granted Secured Party
     here under shall constitute a first priority Lien upon the Collateral,
     except for any Permitted Liens.  Debtor will not, except in the
     ordinary course of business, transfer, discount, sell, grant or assign
     any interest in the Collateral nor, without Secured Party's prior
     written consent, permit any other Lien to be created or remain thereon
     except for Permitted Liens.

                         (c)  Debtor will maintain the Collateral in good
     order and condition, ordinary wear and tear excepted, and will use,
     operate and maintain the Collateral in compliance with all laws,
     regulations and ordinances and in compliance with all applicable
     insurance requirements and regulations.  Debtor will promptly notify
     Secured Party in writing of any litigation involving or affecting the
     Collateral which Debtor knows or has reason to believe is pending or
     threatened.  Debtor will promptly pay when due all taxes and all
     transportation, storage, warehousing and other such charges and fees
     affecting or arising out of or relating to the Collateral and shall
     defend the Collateral, at Debtor's expense, against all claims and
     demands of any Persons claiming any interest in the Collateral adverse
     to Debtor or Secured Party.

                         (d)  At all reasonable times Secured Party and its
     agents and designees may enter any business premises of Debtor and any
     other premises of Debtor and inspect the Collateral and all books and
     records of Debtor (in whatever form).

                         (e)  All books and records pertaining to the
     Collateral are located at York Road and Industry Lane, Cockeysville,
     Maryland 21030, at 11101 Gilroy Road, Cockeysville, Maryland 21030, at
     2801 Professional Parkway, Ocoee, Florida




























     
<PAGE>

<PAGE>
     

     34761, at 1505 East Warner Avenue, Santa Ana, California 92705-5419 or
     at 430 Stump Road, Montgomeryville, Pennsylvania 18936, and Debtor
     will not change the location(s) of such books and records without the
     prior written consent of Secured Party.

                         (f)  Debtor shall do, make, execute and deliver
     all such additional and further acts, things, deeds, assurances,
     instruments and documents as Secured Party may request to vest in and
     assure to Secured Party its rights hereunder or in any of the
     Collateral, including, without limitation, the execution and delivery
     of financing statements, financing statement amendments and/or
     continuation statements, and Debtor agrees to pay all taxes, fees and
     costs (including attorney's fees) paid or incurred by Secured Party in
     connection with the preparation and filing or recordation thereof.

                         (g)  A carbon, photographic or other reproduction
     of this Agreement or any financing statement signed by Debtor in
     connection with this Agreement shall be sufficient as a financing
     statement.

                         (h)  whenever required by Secured Party, Debtor
     shall promptly deliver to Secured Party, with all endorsements and/or
     assignments required by Secured Party, all instruments, chattel paper,
     guaranties and the like received by Debtor constituting, evidencing or
     relating to any of the Collateral or proceeds of any of the
     Collateral.

                         (i)  If any Receivable arises out of a contract
     with the United States of America or any State, county, municipality
     or any department, agency or instrumentality thereof, Debtor shall, if
     required by Secured Party, execute and deliver any agreements, notices
     and/or assignments and do such other things as may be satisfactory to
     Secured Party in order that all sums due and to become due to Debtor
     under such contract shall be duly assigned to Secured Party in
     accordance with the Federal Assignment of Claims Act (31 United States
     Code Section 1203; 41 United States Code Section 15) and/or any other
     applicable federal, State and local laws and regulations relating to the
     assignment of governmental obligations.

                         (j)  Debtor agrees that until the Obligations
     shall have been satisfied in full and this Agreement shall have been
     terminated, Debtor will not, without Secured Party's prior written
     consent, enter into any agreement (for example, a license agreement)
     which is inconsistent with Debtor's obligations under this Agreement
     and Debtor further agrees that it will not take any action, or permit
     any action to be taken by others subject to




























     
<PAGE>

<PAGE>
     

     its control, including licensees, or fail to take any action, which
     would materially adversely affect the validity or enforcement of the
     rights transferred to Secured Party under this Agreement.

               3.  REPRESENTATIONS AND WARRANTIES
                   ------------------------------
                    To induce Secured Party to enter into this Agreement,
     Debtor represents and warrants to Secured Party that:

                    3.01  Good Standing.  Debtor and each Subsidiary is a
                          -------------
     corporation duly organized, legally existing and in good standing
     under the laws of the State of its incorporation, has the power to own
     its property and to carry on its business and is duly qualified to do
     business and is in good standing in each jurisdiction in which the
     character of the properties owned by it therein or in which the
     transaction of its business makes such qualification necessary.

                    3.02  Authority.  Debtor has full power and authority
                          ---------
     to enter into this Agreement, to execute and deliver all documents and
     instruments required hereunder and to incur and perform the
     obligations provided for herein, all of which have been duly
     authorized by all necessary and proper corporate and other action, and
     no consent or approval of any Person, including, without limitation,
     stockholders of Debtor and any public authority or regulatory body,
     which has not been obtained is required as a condition to the validity
     or enforceability hereof or thereof.

                    3.03  Binding Agreements.  This Agreement has been duly
                          ------------------
     and properly executed by Debtor, constitutes the valid and legally
     binding obligation of Debtor and is fully enforceable against Debtor
     in accordance with its terms, subject only to laws affecting the
     rights of creditors generally and application of general principles of
     equity.

                    3.04  No Conflicting Agreements.  The execution,
                          -------------------------
     delivery and performance by Debtor of this Agreement will not (a)
     violate (i) any provision of law or any order, rule or regulation of
     any court or agency of government, (ii) any award of any arbitrator,
     (iii) the Charter or Bylaws of Debtor, or (iv) any indenture,
     contract, agreement, mortgage, deed of trust or other instrument to
     which Debtor is a party or by which Debtor or any of its property is
     bound, or (b) be in conflict with, result in a breach of or constitute
     (with due notice and/or lapse of time) a default under, any such
     award, indenture, contract, agreement, mortgage, deed of trust or
     other instrument, or result in the

























     
<PAGE>

<PAGE>
     

     creation or imposition of any Lien upon any of the property or assets
     of Debtor except for Liens created in favor of Secured Party under or
     pursuant to this Agreement.

                    3.05  Title to Properties.  Debtor has good and
                          -------------------
     marketable title to all of its properties and assets (including the
     Collateral) and all of the properties and assets of Debtor are free
     and clear of Liens, except for Permitted Liens.

                    3.06  Reaffirmation of Existing Representations and
                          ---------------------------------------------
     Warranties.  Each of the representations and warranties contained in
     ----------
     the Loan Agreement and the other Loan Documents is incorporated herein
     and restated as of the date hereof.

               4.  AFFIRMATIVE COVENANTS
                   ---------------------
                    Debtor covenants and agrees with Secured Party that,
     until (a) all Obligations have been paid in full and (b) there exists
     no commitment by Secured Party which could give rise to any
     Obligations, Debtor will:

                    4.01  Taxes.  Pay and discharge, and cause each
                          -----
     Subsidiary to pay and discharge, all taxes, assessments and
     governmental charges upon Debtor and each Subsidiary, its income and
     properties, prior to the date on which penalties attach thereto unless
     and to the extent only that the same are being diligently contested by
     Debtor or a Subsidiary, as the case may be, in good faith by
     appropriate proceedings, provided, however, that (a) Secured Party
     shall have been given reasonable prior written notice of intention to
     contest, (b)nonpayment of the same will not, in Secured Party's sole
     discretion, materially impair any of the Collateral or Secured Party's
     rights or remedies with respect thereto or the prospect for full and
     punctual payment of all of the Obligations, (c) Debtor or such
     Subsidiary at all times effectively stays or prevents any official or
     judicial sale of or action or filing against any of the Collateral by
     reason of nonpayment of the same and (d) Debtor or such Subsidiary
     establishes reasonable reserves for any liabilities being contested
     and for expenses arising out of such contest.

                    4.02  Extraordinary Loss.  Promptly notify Secured
                          ------------------
     Party in writing of any event causing extraordinary loss or
     depreciation of the value of Debtor's or any Subsidiary's assets
     (whether or not insured) and the facts with respect thereto.

                    4.03  Further Assurances and Corrective Instruments. 
                          ---------------------------------------------
     Promptly execute, acknowledge and deliver, or cause to be executed,
     acknowledged and delivered, to Secured Party from





















     
<PAGE>

<PAGE>
     

     time to time such supplements hereto and such financing statements and
     other instruments and documents as may be requested by Secured Party
     to protect and preserve the Collateral, Secured Party's security
     interest therein, perfection of Secured Party's security interest
     and/or Secured Party's rights and remedies hereunder and under the
     Loan Documents.

               5.  NEGATIVE COVENANTS
                   ------------------
                    Debtor covenants and agrees with Secured Party that,
     until (a) all Obligations have been paid in full, and (b) there exists
     no commitment by Secured Party which could give rise to any
     Obligations, Debtor will not, directly or indirectly, without Secured
     Party's prior written consent:

                    5.01  Dividends, Stock Redemptions.  Directly or
                          ----------------------------
     indirectly declare or pay any dividend on, or make any other
     distribution with respect to (whether by reduction of capital or
     otherwise), any shares of its capital stock, or purchase, redeem,
     retire or otherwise acquire for value any shares of its capital stock,
     except that a Subsidiary may pay dividends to Debtor.

                    5.02  Funded Debt.  Redeem, call for redemption,
                          -----------
     purchase or otherwise acquire or retire, directly or indirectly, or
     make any optional prepayment of principal on, any Funded Debt, or
     amend, alter or otherwise modify the provisions relating to any Funded
     Debt, if the effect of such amendment, alteration or other
     modification would or might be to accelerate such Funded Debt.  For
     purposes of this Subsection, "Funded Debt" shall include any
     obligation of Debtor to any Person other than Secured Party payable
     more than one year from the date of its creation which, under
     generally accepted accounting principles, is shown on the balance
     sheet as a liability (excluding reserves for deferred income taxes and
     other reserves to the extent that such reserves do not constitute an
     obligation).

               6.  EVENTS OF DEFAULT
                   -----------------
                    The occurrence of any one or more of the following
     events shall constitute an "Event of Default":

                    (a)  Any representation or warranty made herein, in any
     of the Loan Documents or in any statement, report, certificate,
     opinion, financial statement or other document furnished or to be
     furnished in connection with this Agreement or the Loan Documents
     shall be false or misleading in any material respect.


























     
<PAGE>

<PAGE>
     

                    (b)  Failure of Debtor or any other Person to observe
     or perform any warranty, covenant, condition or agreement to be
     observed or performed by Debtor or such other Person under this
     Agreement or any of the Loan Documents.

                    (c)  The occurrence of a default under or an "Event of
     Default" as defined in the Loan Agreement or any of the other Loan
     Documents.

               7.  RIGHTS AND REMEDIES
                   -------------------
                    7.01  Rights and Remedies of Secured Party.  Upon and
                          ------------------------------------
     after the occurrence of an Event of Default, Secured Party may,
     without notice or demand, exercise in any jurisdiction in which
     enforcement hereof is sought, the following rights and remedies, in
     addition to the rights and remedies available to Secured Party under
     the Loan Documents, the rights and remedies of a secured party under
     the Uniform Commercial Code and all other rights and remedies
     available to Secured Party under applicable law, all such rights and
     remedies being cumulative and enforceable alternatively, successively
     or concurrently:

                         (a)  Declare all of the Obligations to be
     immediately due and payable and the same shall thereupon become
     immediately due and payable without presentment, demand for payment,
     protest or notice of any kind, all of which are hereby expressly
     waived.

                         (b)  Institute any proceeding or proceedings to
     enforce the Obligations and any Liens of Secured Party.

                         (c)  Take possession of the Collateral, and for
     that purpose, so far as Debtor may give authority therefor, enter upon
     any premises on which the Collateral or any part thereof may be
     situated and remove the same therefrom without any liability for suit,
     action or other proceeding, DEBTOR HEREBY WAIVING ANY AND ALL RIGHTS
     TO PRIOR NOTICE AND TO JUDICIAL HEARING WITH RESPECT TO REPOSSESSION
     OF COLLATERAL, and require Debtor, at Debtor's expense, to assemble
     and deliver the Collateral to such place or places as Secured Party
     may designate.

                         (d)  Operate, manage and control the Collateral
     (including use of the Collateral and any other property or assets of
     Debtor in order to continue or complete performance of Debtor's
     obligations under any contracts of Debtor), or permit the Collateral
     or any portion thereof to remain idle or store the same, and collect
     all rents and revenues


























     
<PAGE>

<PAGE>
     

     therefrom and sell or otherwise dispose of any or all of the
     Collateral upon such terms and under such conditions as Secured Party,
     in its sole discretion, may determine, and purchase or acquire any of
     the Collateral at any such sale or other disposition, all to the
     extent permitted by applicable law.

                         (e)  With respect to any accounts, notes,
     instruments, chattel paper, tax refunds, contract rights, general
     intangibles or other debts or liabilities payable to Debtor securing
     the Obligations, notify any account debtors and other obligors thereon
     to make payments thereon directly to Secured Party, take control of
     the cash and non-cash proceeds thereof, demand, collect, sue for and
     receive any money or property at any time due, payable or receivable
     on account thereof, compromise and settle with any Person liable
     thereon, and extend the time of payment or otherwise change the terms
     thereof, without incurring liability or responsibility therefor to
     Debtor or any guarantor of any of the Obligations.

                         (f)  Cease making advances under any other
     commitments or credit accommodations of Secured Party to Debtor and
     stop and retract the making of any advance hereunder or thereunder
     which may have been requested by Debtor.

                    7.02  Power of Attorney.  Effective upon the occurrence
                          -----------------
     of an Event of Default, Debtor hereby designates and appoints Secured
     Party and its designees as attorney-in-fact of Debtor, irrevocably and
     with power of substitution, with authority to receive, open and
     dispose of all mail addressed to Debtor; to notify the postal
     authorities to change the address for delivery of mail addressed to
     Debtor to such other address as Secured Party designates; to endorse
     Debtor's name on any notes, acceptances, checks, drafts, money orders,
     instruments or other evidences of payment or proceeds of the
     Collateral that may come into Secured Party's possession; to sign
     Debtor's name on any invoices, documents, drafts against and notices
     to account debtors or other obligors of Debtor and requests for
     verification of accounts; to execute proofs of claim and loss; to
     execute any endorsements, assignments or other instruments of
     conveyance or transfer; to adjust and compromise any claims under
     insurance policies; to execute releases; and to perform all other acts
     necessary and advisable, in Secured Party's sole discretion, to carry
     out and enforce this Agreement and the Loan Documents.  All acts of
     said attorney or designee are hereby ratified and approved by Debtor
     and said attorney or designee shall not be liable for any acts of
     commission or omission nor for any error of judgment or mistake of
     fact or law.  This power of attorney is coupled with an interest and
     is irrevocable so long as any of the



























     
<PAGE>

<PAGE>
     

     Obligations remain unpaid or unperformed or there exists any
     commitment by Secured Party which could give rise to any Obligations.

                    7.03  Notice of Disposition of Collateral.  It is
                          -----------------------------------
     mutually agreed that commercial reasonableness and good faith require
     Secured Party to give Debtor no more than 5 Business Days prior
     written notice of the time and place of any public disposition of
     Collateral or of the time after which any private disposition or any
     other intended disposition is to be made.

                    7.04  Costs and Expenses.  Debtor agrees to pay to
                          ------------------
     Secured Party on demand the amount of all expenses, including
     attorney's fees and court costs paid or incurred by Secured Party in
     exercising or enforcing or consulting with counsel concerning any of
     its rights hereunder, under the Loan Documents or under applicable
     law, together with interest on all such expenses paid by Secured Party
     at the highest rate and calculated in the manner provided in the Note;
     provided, however, that if such Note shall have been satisfied in full
     and no commitment by Secured Party to extend additional credit to
     Debtor under the Loan Agreement or any of the other Loan Documents
     shall exist, interest shall accrue at the highest rate and calculated
     in the manner provided in the Loan Documents.  The provisions of this
     Subsection shall survive the termination of this Agreement and Secured
     Party's security interest hereunder and the payment of all other
     Obligations.

               8.  MISCELLANEOUS
                   -------------
                    8.01  Performance for Debtor.  Debtor agrees and hereby
                          ----------------------
     authorizes that Secured Party may, in Secured Party's sole discretion,
     but Secured Party shall not be obligated to, whether or not an Event
     of Default shall have occurred, advance funds on behalf of Debtor,
     without prior notice to Debtor, in order to insure Debtor's compliance
     with any covenant, warranty, representation or agreement of Debtor
     made in or pursuant to this Agreement or any of the Loan Documents, to
     continue or complete, or cause to be continued or completed,
     performance of Debtor's obligations under any contracts of Debtor, to
     cover overdrafts in any checking or other accounts of Debtor at
     Secured Party or to preserve or protect any right or interest of
     Secured Party in the Collateral or under or pursuant to this Agreement
     or any of the Loan Documents, including, without limitation, the
     payment of any insurance premiums or taxes and the satisfaction or
     discharge of any judgment or any Lien upon the Collateral or other
     property or assets of Debtor; provided, however, that the making of
     any such advance by Secured Party shall not constitute a waiver by
     Secured

























     
<PAGE>

<PAGE>
     

     Party of any Event of Default with respect to which such advance is
     made nor relieve Debtor of any such Event of Default.  Debtor shall
     pay to Secured Party upon demand all advances made by Secured Party
     under this Subsection 8.01 with interest thereon at the highest rate
     and calculated in the manner provided in the Note; provided, however,
     that if such Note shall have been satisfied in full and no commitment
     by Secured Party to extend additional credit to Secured Party under
     the Loan Agreement or any of the other Loan Documents shall exist,
     interest shall accrue at the highest rate and calculated in the manner
     provided in the Loan Documents.  All such advances shall be deemed to
     be included in the Obligations and secured by the security interest
     granted Secured Party hereunder; provided, however, that the
     provisions of this Subsection shall survive the termination of this
     Agreement and Secured Party's security interest hereunder and the
     payment of all other Obligations.

                    8.02  Expenses.  Debtor agrees to pay to Secured Party
                          --------
     on demand the amount of all expenses paid or incurred by Secured Party
     (including the fees and expenses of its counsel) in connection with
     the preparation of all written commitments of Secured Party antedating
     this Agreement, this Agreement and the Loan Documents and all
     documents and instruments referred to herein.  Debtor further agrees
     to pay all expenses in connection with the filing or recordation of
     all financing statements and instruments as may be required by Secured
     Party at the time of, or subsequent to, the execution of this
     Agreement, including, without limitation, all documentary stamps,
     recordation and transfer taxes and other costs and taxes incident to
     recordation of any document or instrument in connection herewith and,
     if any such expenses shall be paid or incurred by Secured Party, to
     pay to Secured Party upon its demand the amount of such expenses. 
     Debtor agrees to save harmless and indemnify Secured Party from and
     against any liability resulting from the failure to pay any required
     documentary stamps, recordation and transfer taxes, recording costs,
     or any other expenses in connection with this Agreement.  The
     provisions of this Subsection shall survive the termination of this
     Agreement and Secured Party's security interest hereunder and the
     payment of all other Obligations.

                    8.03  Applications of Collateral.  Except as may be
                          --------------------------
     otherwise specifically provided in this Agreement, all Collateral and
     proceeds of Collateral coming into Secured Party's possession may be
     applied by Secured Party to any of the Obligations, whether matured or
     unmatured, as Secured Party shall determine in its sole discretion.





























     
<PAGE>

<PAGE>
     

                    8.04  Waivers by Debtor.  Debtor hereby waives, to the
                          -----------------
     extent the same may be waived under applicable law: (a) notice of
     acceptance of this Agreement; (b) all claims, causes of action and
     rights of Debtor against Secured Party on account of actions taken or
     not taken by Secured Party in the exercise of Secured Party's rights
     or remedies hereunder, under the Loan Documents or under applicable
     law; (c) all claims of Debtor for failure of Secured Party to comply
     with any requirement of applicable law relating to enforcement of
     Secured Party's rights or remedies hereunder, under the Loan Documents
     or under applicable law; (d) all rights of redemption of Debtor with
     respect to the Collateral; (e) in the event Secured Party seeks to
     repossess any or all of the Collateral by judicial proceedings, any
     bond(s) or demand(s) for possession which otherwise may be necessary
     or required; (f) presentment, demand for payment, protest and notice
     of non-payment and all exemptions; (g) any and all other notices or
     demands which by applicable law must be given to or made upon Debtor
     by Secured Party; (h) settlement, compromise or release of the
     obligations of any Person primarily or secondarily liable upon any of
     the Obligations; (i) trial by jury in any action or proceeding of any
     kind or nature in connection with any of the Obligations, this
     Agreement or any of the Loan Documents; and (j) substitution,
     impairment, exchange or release of any collateral security for any of
     the Obligations.  Debtor agrees that Secured Party may exercise any or
     all of its rights and/or remedies hereunder, under the Loan Documents
     and under applicable law without resorting to and without regard to
     any collateral security or sources of liability with respect to any of
     the Obligations.

                    8.05  Waivers by Secured Party.  Neither any failure
                          ------------------------
     nor any delay on the part of Secured Party in exercising any right,
     power or remedy hereunder, under any of the Loan Documents or under
     applicable law shall operate as a waiver thereof, nor shall a single
     or partial exercise thereof preclude any other or further exercise
     thereof or the exercise of any other right, power or remedy.

                    8.06  Modifications.  No modification or waiver of any
                          -------------
     provision of this Agreement or any of the Loan Documents, and no
     consent by Secured Party to any departure by Debtor therefrom, shall
     in any event be effective unless the same shall be in writing, and
     then such waiver or consent shall be effective only in the specific
     instance and for the purpose for which given.  No notice to or demand
     upon Debtor in any case shall entitle Debtor to any other or further
     notice or demand in the same, similar or other circumstances.




























     
<PAGE>

<PAGE>
     

                    8.07  Notices.  Any notice or other communication in
                          -------
     connection with this Agreement shall be provided in the manner
     specified in the Loan Agreement.

                    8.08  Confession of Judgment.  Debtor hereby authorizes
                          ----------------------
     any clerk of court or any attorney-at-law to appear for Debtor before
     any court, having jurisdiction, within the United States or elsewhere,
     and, after one or more complaints filed, confess judgment against
     Debtor as of any time after any of the Obligations are due (whether by
     demand, stated maturity, acceleration or otherwise) for the unpaid
     balance of the Obligations, including principal, interest, fees, late
     charges, court costs and expenses, together with attorneys' fees equal
     to fifteen percent (15%) of the amount of such Obligations, for
     collection and release of all errors, and without stay of execution,
     and inquisition and extension upon any levy on real estate is hereby
     waived and condemnation agreed to, and the exemption of personal
     property from levy and sale is also hereby expressly waived, and no
     benefit of exemption shall be claimed under any exemption law now in
     force or which may be hereafter adopted.  The foregoing authorities
     and powers to confess judgment shall not be exhausted by one or more
     exercises of any of them or by any imperfect exercise of any of them,
     shall not be extinguished by any judgment entered because of any of
     them and may be exercised before, during or after sale, liquidation or
     other disposition by Secured Party of any property directly or
     indirectly securing any of the Obligations or exercise or enforcement
     by Secured Party of any other right or remedy of Secured Party with
     respect to the Obligations.  Debtor agrees that any agreements of
     Debtor contained in this Agreement or any of the Other Agreements to
     pay any costs or expenses, including attorneys' fees and expenses,
     paid or incurred by Secured Party shall not be merged into, or
     otherwise impaired by, any such judgment by confession, but Secured
     Party shall not be entitled to recover on account of such costs or
     expenses any amount in excess of the greater of (a) such costs or
     expenses included in any judgments by confession (without
     duplication), or (b) such costs or expenses actually paid or incurred
     by Secured Party.

                    8.09  Survival; Successors and Assigns.  All covenants,
                          --------------------------------
     agreements, representations and warranties made herein and in the Loan
     Documents shall survive the execution and delivery hereof and thereof,
     and shall continue in full force and effect until all Obligations have
     been paid in full and there exists no commitment by Secured Party
     which could give rise to any Obligations.  Whenever in this Agreement
     any of the parties hereto is referred to, such reference shall be
     deemed to include the successors and assigns of such party.  All
     covenants,

























     
<PAGE>

<PAGE>
     

     agreements, representations and warranties by or on behalf of Debtor
     which are contained in this Agreement and the Loan Documents shall
     inure to the benefit of Secured Party, its successors and assigns. 
     Debtor may not assign this Agreement or any of its rights hereunder
     without the prior written consent of Secured Party.  Secured Party may
     at any time, in its discretion, assign, transfer or pledge to any
     person, or grant to any person a security interest in, the
     Obligations, this Agreement, any of the Other Agreements or any of its
     rights hereunder or thereunder.  In addition, Secured Party may sell,
     in such amounts, upon such terms and to such persons as Secured Party
     may determine, participations in its interests in the Obligations
     and/or under this Agreement and/or any of the Other Agreements.  In
     the case of each such assignment, transfer, pledge, grant or sale,
     Secured Party may from time to time provide to the assignee,
     transferee, pledgee, secured party or participant, any information and
     documents (or copies thereof) relating to this Agreement and the Other
     Agreements and related transactions, and relating to the business,
     assets, operations, business prospects or financial condition of
     Debtor.

                    8.10  Merger and Integration.  This Agreement and the
                          ----------------------
     attached Schedule(s) contain the entire agreement of the parties
     hereto with respect to the matters covered and the transactions
     contemplated hereby, and no other agreement, statement or promise made
     by any party hereto, or by any employee, officer, agent or attorney of
     any party hereto, which is not contained herein, shall be valid or
     binding.

                    8.11  Counterparts.  This Agreement may be executed in
                          ------------
     any number of counterparts and by different parties hereto on separate
     counterparts, each of which, when so executed and delivered, shall be
     an original, but all such counterparts shall together constitute one
     and the same instrument.

                    8.12  Headings.  The headings and sub-headings
                          --------
     contained in the titling of this Agreement are intended to be used for
     convenience only and shall not be used or deemed to limit or diminish
     any of the provisions hereof.

                    8.13  Recitals.  The Recitals hereto are hereby
                          --------
     incorporated into and made a part of this Agreement.

                    8.14  Loan Document.  This Agreement is one of the Loan
                          -------------
     Documents.

























     
<PAGE>

<PAGE>
     

               IN WITNESS WHEREOF, the parties hereto have executed or
     caused to be executed this Agreement under seal as of the date first
     above written.

     WITNESS/ATTEST:                    AAI CORPORATION

                                        By:Robert W. Worthing(SEAL)
     --------------------                  ------------------
                                        Name:                     
                                             ---------------------
                                        Title:                    
                                              --------------------

                                        AAI ENGINEERING SUPPORT, INC.

                                        By:Robert W. Worthing(SEAL)
     --------------------                  ------------------
                                        Name:                     
                                             ---------------------
                                        Title:                    
                                              --------------------

                                        AAI MANUFACTURING ASSEMBLY,

                                        By: Robert W. Worthing (SEAL)
     --------------------                   ------------------
                                        Name:                     
                                             ---------------------
                                        Title:                    
                                              --------------------

                                        AAI SYSTEMS MANAGEMENT, INC.

                                        By: Robert W. Worthing(SEAL)
     --------------------                   ------------------
                                        Name:                     
                                             ---------------------
                                        Title:                    
                                              --------------------

                                        AAI MEDICAL CORPORATION

                                        By:Robert W. Worthing(SEAL)
     --------------------                  ------------------
                                        Name:                     
                                             ---------------------
                                        Title:                    
                                              --------------------

                                        SETI, INC.

                                        By:Robert W. Worthing(SEAL)
     --------------------                  ------------------
                                        Name:                     
                                             ---------------------
                                        Title:                    
                                              --------------------

















     
<PAGE>

<PAGE>
     

                                        AAI/ACL TECHNOLOGIES, INC.

                                        By:Robert W. Worthing(SEAL)
     --------------------                  ------------------
                                        Name:                     
                                             ---------------------
                                        Title:                    
                                              --------------------


                                        AAI MICROFLITE SIMULATION
                                        INTERNATIONAL CORPORATION

                                        By:Robert W. Worthing(SEAL)
     --------------------                  ------------------
                                        Name:                     
                                             ---------------------
                                        Title:                    
                                              --------------------
                                                       DEBTOR






















































     
<PAGE>

<PAGE>
     

                                        SIGNET BANK/MARYLAND


                                        By:David A. Bauereis(SEAL)
     -------------------------             -----------------
                                           David A. Bauereis
                                           Vice President

                                                  SECURED PARTY



     STATE OF MARYLAND, TO WIT:

               I HEREBY CERTIFY that on this ____ day of _________, 1994,
     before me, the subscriber, a Notary Public of said State, personally
     appeared Paul J. Michaud, who acknowledged himself to be (1) the Vice
     President, Chief Financial Officer and Treasurer of each of AAI
     Corporation, AAI Engineering Support, Inc., AAI Manufacturing
     Assembly, Inc., AAI Systems Management, Inc., Seti, Inc. and AAI/ACL
     Technologies, Inc., (2) the Vice President and Secretary of AAI
     Medical Corporation, and (3) the Vice President and Chief Financial
     Officer of AAI Microflite Simulation International Corporation, and
     that he, as such, being authorized so to do, executed the foregoing
     instrument for the purposes therein contained.

               IN WITNESS WHEREOF, I hereunto set my hand and official
     seal.

                                                                      
                                             -------------------------
                                             Notary Public


     My Commission expires:
                           
     ----------------------


















<PAGE>
     


                               GUARANTY AGREEMENT
                               ------------------

               GUARANTY AGREEMENT, dated as of May 27, 1994 (this "Guaranty
     Agreement") by UIC-DEL. CORPORATION, a Delaware corporation (herein
     called the "Guarantor"), to Signet Bank/Maryland (the "Bank"). 
     Capitalized terms not otherwise defined herein have the meanings
     specified in Section 7 hereof.

                                    RECITALS
                                    --------
               Reference is made to that certain Amended and Restated Loan
     Agreement dated August 11, 1992, as amended (the "Loan Agreement"), by
     and among AAI Corporation, a Maryland corporation ("AAI"), AAI
     Engineering Support, Inc., a Maryland corporation ("Engineering"), AAI
     Manufacturing Assembly, Inc., a Maryland corporation ("Assembly"), AAI
     Systems Management, Inc., a Maryland corporation ("Systems"), AAI
     Medical Corporation, a Maryland corporation ("Medical"), Seti, Inc., a
     Pennsylvania corporation ("Seti"), AAI/ACL Technologies, Inc., a
     Maryland corporation ("AAI/ACL"), and AAI Microflite Simulation
     International Corporation, a Maryland corporation ("AAI Microflite",
     and AAI, Engineering, Assembly, Systems, Medical, Seti, AAI/ACL and
     AAI Microflite jointly and severally, individually and collectively,
     the "Borrower"), and the Bank.  The Loan Agreement provided, inter
                                                                  -----
      alia, for the extension by the Bank to the Borrower of a revolving
      ----
     credit facility in an original aggregate principal amount not to
     exceed $30,000,000.00.  The "Termination Date" as defined in the Loan
     Agreement has occurred without extension by the Bank, and all of the
     "Obligations" as therein defined have become due and payable.  The
     Borrower and the Guarantor have requested the Bank to extend the
     Termination Date to August 20, 1994, and as a condition to consenting
     to such request the Bank has, inter alia, required the execution
                                   ----------
     hereof by the Guarantor.

               NOW, THEREFORE, in consideration of and in order to induce
     the Bank to extend additional credit to the Borrower, the Guarantor
     agrees as follows:

               SECTION 1.  GUARANTY.

               (a)  The Guarantor hereby guarantees absolutely and
     unconditionally to the Bank the due and punctual payment of all
     obligations under the Loan Agreement and the "Note" (as therein
     defined and herein the "Note"), and the payment, performance and
     observation of all obligations, covenants and agreements of the
     Borrower under the Loan Agreement, the Note and under the other
























     NYFS11...:\95\78495\0001\7120\AGR81094.A40
<PAGE>

<PAGE>
     

     "Loan Documents" (as defined in the Loan Agreement and herein the
     "Loan Documents") and all attorneys' fees, costs and expenses of
     collection incurred by the Bank in connection therewith and in
     connection with the enforcement of this Guaranty Agreement.

               (b)  This is a guaranty of payment and performance and the
     Guarantor waives any right to require that any action be brought
     against the Borrower or any other Person or to require that resort be
     had to any security.  The Bank may, at its option, proceed against the
     Guarantor in the first instance to collect any monies, the payment of
     which is guaranteed hereby, or enforce any obligations, covenants or
     agreements, the performance of which is guaranteed hereby without
     first restoring to any direct or indirect security or to any other
     remedies including, by way of example but not of limitation, any right
     of setoff at the same or at different times, as the Bank may deem
     advisable, and the liability of the Guarantor hereunder shall in no
     way be affected or impaired by any acceptance by the Bank of any
     direct or indirect security for, or other guarantees of, any
     indebtedness, liability or obligation of the Borrower to the Bank or
     by any failure, delay, neglect or omission by the Bank to realize upon
     or protect any such indebtedness, liability or obligation, or any
     notes or other instruments evidencing the same or any direct or
     indirect security therefor.

               (c)  The Guarantor hereby consents that the Bank, from time
     to time, before or after any default by the Borrower, with or without
     any further notice to or assent from the Guarantor, may, without in
     any manner affecting the liability of the Guarantor, and upon such
     terms and conditions as the Bank may deem advisable:  (1) extend the
     time for performance or payment in whole or in part by renewal or
     otherwise, compromise or release any indebtedness, liability,
     obligation of or undertaking of the Borrower or of any other Person
     secondarily or otherwise liable for any indebtedness, liability or
     obligation of the Borrower, or waive any default with respect thereto
     or waive any provision of the Note, the Loan Agreement or any of the
     other Loan Documents; (2) sell, release, surrender, modify, impair,
     exchange, substitute or extend the duration or the time for the
     performance or payment of any and all property, of any nature and from
     whomsoever received, held by the Bank as direct or indirect security
     for the payment or performance of any indebtedness, liability,
     obligation or undertaking of the Borrower or of any other Person
     secondarily or otherwise liable for any indebtedness, liability,
     obligation or undertaking of the Borrower; (3) settle, adjust or
     compromise any claim of the Bank against the Borrower or any other
     Person secondarily or otherwise liable for any indebtedness, liability
     or obligation of the




























     
<PAGE>

<PAGE>
     

     Borrower; or (4) add or partially release any guarantor, maker,
     surety, endorser, indemnitor or other party or parties primarily or
     secondarily liable for the payment and/or performance of any
     indebtedness, liability or obligation of the Borrower (including,
     without limitation, the addition or release of any presently existing
     or future subsidiary or affiliate of AAI as one of the "Borrower"
     under the Loan Agreement).  The Guarantor hereby ratifies and confirms
     any such extension of time, renewal, release, waiver, surrender,
     exchange, impairment, substitution, settlement, adjustment,
     compromise, addition or release and agrees that the same shall be
     binding upon the Guarantor, and hereby waives any and all defenses,
     counterclaims or offsets which the Guarantor might or could have by
     reason thereof, it being understood that the Guarantor shall at all
     times be bound by this Guaranty and remain liable to the Bank
     hereunder.  No modification, change or amendment (executed by the
     party or parties against whom enforcement thereof may be sought) of
     any provision of the Loan Agreement, the Note or any of the other Loan
     Documents will release the Guarantor from its obligations hereunder.

               (d)  The Guarantor hereby waives:  (1) notice of acceptance
     of this Guaranty by the Bank or of the creation, renewal or accrual of
     any liability of the Borrower, present or future, or of the reliance
     of the Bank upon this Guaranty (it being understood that every
     indebtedness, liability and obligation of the Borrower to the Bank
     created pursuant to the Loan Agreement, the Note or any of the other
     Loan Documents shall conclusively be presumed to have been created,
     contracted or incurred in reliance upon the execution of this
     Guaranty); (2) demand of payment or performance by the Bank or any
     other Person from the Borrower or from any other Person indebted in
     any manner on or for any of the indebtedness, liabilities or
     obligations hereby guaranteed; (3) presentment and demand for payment
     by the Bank or any other Person of any instrument of the Borrower or
     of any other Person, protest thereof, and notice of its dishonor to
     any part thereto and to the Guarantor; (4) notice of the occurrence of
     a default or Event of Default under the Note, the Loan Agreement or
     any of the other Loan Documents; (5) notice of any indulgences or
     extensions granted to Borrower; (6) any and all notice of every kind
     and description which may be required to be given by any statute or
     rule of law in any jurisdiction; and (7) all subrogation and other
     rights and claims of the Guarantor against the Borrower arising on
     account of this Guaranty or any sums paid by the Guarantor collected
     by the Bank pursuant to this Guaranty.

               SECTION 2.  REPRESENTATIONS AND WARRANTIES.






























     
<PAGE>

<PAGE>
     

               (a)  Corporate Existence and Power.  The Guarantor is a
                    -----------------------------
     corporation duly incorporated, validly existing and in good standing
     under the laws of the State of Delaware, and has all corporate powers
     and all material governmental licenses, authorization, consents and
     approvals required to carry on its business as now conducted.  The
     Guarantor is duly qualified as a foreign corporation, licensed and in
     good standing in each jurisdiction where qualification or licensing is
     required by the nature of its business or the character and location
     of its property, business or customers and in which the failure to so
     qualify or be licensed, as the case may be, in the aggregate, could
     have a material adverse effect on the business, financial position,
     results of operation, properties or prospects of the Guarantor.  The
     Guarantor is not a "foreign person" within the meaning of Section 1445
     or 7701 of the Internal Revenue Code.

               (b)  Corporate and Governmental Authorization;
                    -----------------------------------------
     Contravention.  The execution, delivery and performance by the
     -------------
     Guarantor of this Guaranty Agreement are within its corporate power,
     have been duly authorized by all necessary corporate and shareholder
     action, required no action by or in respect of, or filing with, any
     governmental body, agency or official and do not contravene, or
     constitute (with or without the giving of notice or lapse of time or
     both) a default under, any provisions of applicable law or of the
     articles of incorporation or by-laws of the Guarantor or of any
     agreement, judgment, injunction, order, decree or other instrument
     binding upon or affecting the Guarantor or result in the creation or
     imposition of any Lien on any of its assets.

               (c)  Binding Effect.  This Guaranty Agreement constitutes a
                    --------------
     valid and binding agreement of the Guarantor, in each case enforceable
     against the Guarantor in accordance with their respective terms,
     except as the enforceability hereof and thereof may be limited by
     bankruptcy, insolvency or similar laws applied to Guarantor and
     affecting the enforceability of creditors' rights generally.

               (d)  Financial Information.  The UIC-Del. Corp. Trial
                    ---------------------
     Balance as at April 24, 1994, a copy of which has been delivered to
     the Bank, fairly presents the financial position of the Guarantor as
     of such date.  As of April 24, 1994, the Guarantor did not have any
     material contingent obligation, contingent liability or liability for
     taxes, long-term lease or unusual forward or long-term commitment,
     which is not reflected on its financial statements or notes thereto. 
     Since April 24, 1994, there has been no material adverse change in the
     business,

























     
<PAGE>

<PAGE>
     

     financial position, results of operation or prospects of the
     Guarantor.

               (e)  Litigation.  There is no action, suit or proceeding
                    ----------
     pending against or, to the knowledge of the Guarantor, threatened
     against or affecting, the Guarantor or any of its Subsidiaries before
     any court or governmental body, agency or official in which there is a
     reasonable possibility of a decision which could materially adversely
     affect the business, financial position or results of operations of
     the Guarantor or which in any manner draws into question the validity
     of this Guaranty Agreement, the Loan Agreement, the Note or any other
     Loan Document and there is no basis known to the Guarantor for any
     such action, suit or proceeding.  There is no case, voluntary or
     involuntary, or other proceeding pending against or, to the knowledge
     of the Guarantor, threatened against or affecting, the Guarantor or
     any of its Subsidiaries seeking liquidation, reorganization or other
     relief with respect to it or its debts under any bankruptcy,
     insolvency or other similar law now or hereafter in effect or seeking
     the appointment of a trustee, receiver, liquidator, custodian or other
     similar official of it or any substantial part of its property.

               (f)  Marketable Title.  The Guarantor has good and
                    ----------------
     marketable title to all its properties and assets, including, without
     limitation, the Note and the Letter of Credit, subject to no Lien. 
     All leases necessary in any material respect for the conduct of the
     Guarantor's business are valid and subsisting and are in full force
     and effect.

               (g)  Taxes.  The Guarantor has filed all United States
                    -----
     Federal income tax returns and all other material tax returns which
     are required to be filed by it and has paid all taxes due as shown on
     such returns or pursuant to any assessment received by the Guarantor. 
     Neither the Internal Revenue Service nor the income tax authority of
     any State has initiated any audit (which has not been concluded, and
     the Guarantor having paid any amount determined to be owing) or
     otherwise questioned any tax returns of the Guarantor. The charges,
     accruals and reserves on the books of the Guarantor in respect of
     taxes or other governmental charges have been established in
     accordance with GAAP.  The provisions on the books of the Guarantor
     for tax liabilities for the current fiscal period and for open tax
     years are adequate in the opinion of management.  The Guarantor is not
     the subject of any proposed income or franchise tax assessment for
     which adequate reserves have not been established on the books of the
     Guarantor



























     
<PAGE>

<PAGE>
     

               (h)  Conflicting Agreements and Other Matters.  The
                    ----------------------------------------
     Guarantor is not a party to any contract or agreement or subject to
     any charter or other corporate restriction which materially and
     adversely affects its business, property or assets or its financial
     condition.  Neither the execution nor delivery of this Guaranty
     Agreement or fulfillment of nor compliance with the terms and
     provisions hereof will conflict with, or result in a breach of the
     terms, conditions or provisions of, or constitute a default under, or
     result in any violation of, or result in the creation of any Lien upon
     any of its properties or assets pursuant to the articles of
     incorporation or by-laws of the Guarantor, any award of any arbitrator
     or any other agreement (including any agreement with stockholders),
     instrument, order, judgment, decree, statutes, law, rule or regulation
     to which the Guarantor is subject.  The Guarantor is not a party to,
     or otherwise subject to any provisions contained in, any instrument
     evidencing Debt of the Guarantor, any agreement relating thereto or
     any other contract or agreement (including its articles of
     incorporation) which limits the amount of or otherwise imposes
     restriction on the incurring of, Debt of the Guarantor of the type
     evidenced hereby.

               (i)  Governmental Consent.  Neither the nature of the
                    --------------------
     Guarantor, nor any of its business or properties, nor any relationship
     between the Guarantor and any other Person, nor any circumstance in
     connection with the execution or delivery of this Guaranty Agreement
     is such as to require any authorization, consent, approval, exception
     or other action by or notice to or filing with any court or
     administrative or governmental body in connection with the execution
     and delivery of this Guaranty Agreement or fulfillment of or
     compliance with the terms and provisions hereof.

               (j)  Disclosure.  Neither this Guaranty Agreement nor any
                    ----------
     other document, certificate or statement furnished to the Bank by or
     on behalf of the Guarantor pursuant hereto contains any untrue
     statement of a material fact or omits to state a material fact
     necessary in order to make the statements contained herein and therein
     not misleading in light of the circumstances in which they were made. 
     To the best knowledge of the Guarantor, there is no fact peculiar to
     the Guarantor which materially adversely affects or in the future may
     (so far as the Guarantor can now foresee) materially adversely affect
     the business, property or assets, or the financial condition of the
     Guarantor and which has not been set forth in this Guaranty Agreement
     or in the other documents, certificates and statements furnished to
     the Bank by or on behalf of the Guarantor prior to the date hereof in
     connection with the transactions contemplated hereby.


























     
<PAGE>

<PAGE>
     

               SECTION 3.  CHARACTER OF OBLIGATIONS OF THE
                           GUARANTOR.

               (a)  The obligations of the Guarantor under this Guaranty
     Agreement, and the rights of the Bank to enforce such obligations by
     any proceedings, whether by action at law, suit in equity or
     otherwise, shall not be subject to any reduction, limitation,
     impairment or termination, whether by reason of any claim of any
     character whatsoever or otherwise, including, without limitation,
     claims of waiver, release, surrender, alteration or compromise, and
     shall not be subject to any defense, setoff, counterclaim, recoupment
     or termination whatsoever.

               (b)  The obligations of the Guarantor under this Guaranty
     Agreement are absolute, unconditional and continuing under any and all
     circumstances, and no such obligation shall be to any extent or in any
     way discharged, impaired or otherwise affected, except by performance
     in full thereof.  Without limiting the generality of the foregoing,
     the obligations of the Guarantor shall not be discharged or impaired
     or otherwise affected by:

               (1)  any default, failure or delay, willful or otherwise, in
     the performance by the Borrower of any of its obligations under the
     Loan Agreement, the Note or the other Loan Documents;

               (2)  any creditor's rights, bankruptcy, receivership or
     other insolvency proceeding of the Borrower or in respect of the
     property of the Borrower or any merger, consolidation, reorganization,
     dissolution, liquidation or winding up of the Borrower or of the
     Guarantor;

               (3)  impossibility or illegality of performance on the part
     of the Borrower of its obligations under the Loan Agreement, the Note
     or any of the other Loan Documents;

               (4)  the invalidity, irregularity or unenforceability of the
     Loan Agreement, the Note, any of the other Loan Documents or any
     documents referred to therein or herein;

               (5)  any order, judgment, decree, ruling or regulation
     (whether or not valid) of any court of any federal, state or local
     governmental unit or any body, agency, department, official or
     administrative or regulatory agency of any thereof or any other
     action, happening, event or reason whatsoever which shall delay,
     interfere with, hinder or prevent, or in any way adversely





























     
<PAGE>

<PAGE>
     

     affect, the performance by the Borrower of any of its obligations
     under the Loan Agreement, the Note or any of the other Loan Documents;

               (6)  the extension of the time for payment or performance by
     the Borrower of any amount owing or payable under the Loan Agreement,
     the Note or any of the other Loan Documents, or of the time for
     performance by the Borrower or any other Person of any other
     obligations under or arising out of any such documents, or the
     extension or the renewal of any thereof;

               (7)  the modification or amendment (whether material or
     otherwise) of any obligation, undertaking or condition to be performed
     by the Borrower under the Loan Agreement, the Note or any of the other
     Loan Documents;

               (8)  any failure, omission, delay or lack on the part of the
     Bank to enforce, assert or exercise any right, power or remedy
     conferred on the Bank in the Loan Agreement, the Note or any of the
     other Loan Documents or any action on the part of the Bank granting
     indulgence or extension in any form;

               (9)  the release or discharge of the Borrower or the Bank
     from the performance or observance of any obligation, undertaking or
     condition to be performed by Borrower or the Bank under the Loan
     Agreement, the Note or any of the other Loan Documents by operation of
     law;

               (10)  the sale, divestiture or other disposition of any or
     all of the interest of UIC or the Guarantor in the Borrower, or any
     other change in the relationship of the Guarantor and the Borrower;

               (11)  the sale, divestiture or other disposition by the
     Borrower or any or all of its properties or any assumption by any
     person or entity of the Borrower's obligations under the Note;

               (12)  the existence or nonexistence of the Borrower as a
     legal entity or any merger or consolidation of the Borrower or
     Guarantor into or with any other person or entity or any sale, lease
     or transfer of substantially all of the assets of the Borrower or
     Guarantor;

               (13)  the power or authority or lack thereof of the Borrower
     to execute and deliver the Note, the Loan Agreement or any of the
     other Loan Documents;






























     
<PAGE>

<PAGE>
     

               (14)  the legality, validity or enforceability or lack
     thereof of any of the Note, the Loan Agreement or any of the other
     Loan Documents;

               (15)  any event or circumstance which might otherwise
     constitute a legal or equitable discharge or defense of a guarantor,
     indemnitor or surety under any applicable law; or

               (16)  any other cause, whether similar or dissimilar to the
     foregoing.

               SECTION 4.  NON-FINANCIAL COVENANTS.  The Guarantor agrees
     that so long as any obligation, covenant or agreement which the
     Guarantor has guaranteed hereunder remains unsatisfied, it shall
     comply with, perform and observe the following covenants and
     provisions and shall cause each Subsidiary to comply with, perform and
     observe said covenants and provisions as are applicable thereto:

               (a)   Information.  The Guarantor will deliver or cause to
                     -----------
     be delivered to the Bank, promptly upon any transmission thereof, the
     following reports, certificates and opinions:

               (1)   promptly (and in any event, within five Business Days)
     after obtaining knowledge of the commencement of, or a material threat
     of the commencement of, an action, suit or proceeding against the
     Guarantor which could materially adversely affect the business,
     properties, financial position, results of operations or prospects of
     the Guarantor or which in any manner questions the validity of this
     Guaranty Agreement, the Loan Agreement, the Note or any of the other
     Loan Documents or any of the other transactions contemplated hereby or
     thereby, written notice setting forth the nature of such pending or
     threatened action, suit or proceeding and such additional information
     as may be reasonably requested by the Bank;

               (2)   promptly upon transmission thereof, copies of all
     press releases and other statements made available generally by the
     Guarantor to the public concerning material developments in the
     results of operations, financial condition, business or prospects of
     the Guarantor;

               (3)   promptly upon receipt thereof, copies of each report
     submitted to the Guarantor by independent public accountants in
     connection with any annual, interim or special audit made by them of
     the books of the Guarantor including, without limitation, each report
     submitted to the Guarantor concerning its accounting practices and
     systems and any final



























     
<PAGE>

<PAGE>
     

     comment letter submitted by such accountants to management in
     connection with the annual audit of the Guarantor; and

               (4)   from time to time such additional information
     regarding the financial position, results of operations or business of
     the Guarantor as the Bank may reasonably request.

               Bank is authorized to submit a copy of any financial
     statement delivered to it pursuant to this Section 4(a) to any
     regulatory body having jurisdiction over it, to rating agencies and,
     on a confidential basis, to any prospective participant or assignee.

               The Guarantor will, upon reasonable notice by the Bank (and
     at the expense of the Bank except during the continuance of a Default
     or an Event of Default, in which case at the expense of the
     Guarantor), permit representatives of the Bank to visit and inspect
     the properties of the Guarantor and its Subsidiaries and examine and
     make abstracts from any of their books and records at any time during
     normal business hours and as often as may reasonably be requested, and
     to discuss the business of the Guarantor and its Subsidiaries with
     officers and employees of the Guarantor and its Subsidiaries and with
     its independent certified public accountants.  The Bank shall use its
     best efforts to hold all nonpublic information obtained confidential
     in accordance with its customary procedures to the extent that the
     Guarantor or any of its Subsidiaries clearly identifies such
     information as confidential.

               (b)   Notice of Default.  Forthwith upon the occurrence of
                     -----------------
     any Default, and not later than three Business Days after such fact
     becomes known to an Executive Officer of the Guarantor, the chief
     financial officer of the Guarantor will deliver or cause to be
     delivered to the Bank notice of such Default setting for the details
     thereof, the period of existence thereof and the action which the
     Guarantor is taking or proposes to take with respect thereto.

               (c)   Payment of Obligations.  The Guarantor will pay and
                     ----------------------
     discharge, as the same shall become due and payable, (1) all its
     obligations and liabilities, including all claims or demands of
     materialmen, mechanics, carriers, warehousemen, landlords and other
     like persons which, in any such case, if unpaid, might by law give
     rise to a Lien upon any of its property or assets, and (2) all taxes,
     assessments and charges or levies made upon it or its property or
     assets, by any governmental body, agency or official except
     obligations, liabilities, taxes, assessments, charges and levies being
     diligently contested in good faith by



























     
<PAGE>

<PAGE>
     

     appropriate proceedings and reserved against in accordance with GAAP.

               (d)   Maintenance of Property; Insurance.
                     ----------------------------------
               (1)   The Guarantor will, and will cause its Subsidiaries
     to, keep all property useful and necessary and in its business in good
     working order and condition, subject to ordinary wear and tear, and
     form time to time make or cause to be made all repairs, renewals,
     replacements, extensions, additions and improvements to such
     properties and assets as are necessary and proper.

               (2)   The Guarantor will, and will cause its Subsidiaries
     to, maintain with financially sound and reputable insurance companies,
     comprehensive liability insurance on all its properties in at least
     such amounts and against at least such risks (and with such risk
     retentions) as are usually insured against by companies engaged in the
     same or a similar business and will furnish to the Bank upon request
     full information as the insurance carried.

               (e)   Conduct of Business and Maintenance of Existence.  The
                     ------------------------------------------------
      Guarantor will, and will cause each Subsidiary to, continue to engage
     in business of the same general type as now conducted by the Guarantor
     or such Subsidiary, and will preserve, renew and keep in full force
     and effect its corporate existence and its rights, privileges and
     franchises necessary or desirable in the normal conduct of business. 
     The Guarantor will not engage in any business other than substantially
     the same line of business as conducted by the Guarantor on the date of
     this Guaranty Agreement or liquidate, wind-up or dissolve, whether
     voluntarily or involuntarily (or suffer any such liquidation or
     dissolution) or make any material change in its capital structure or
     any of its business objectives, purposes and operations.

               (f)   Compliance with Laws.  The Guarantor will, and will
                     --------------------
     cause each Subsidiary to, comply with all applicable laws, ordinances,
     rules, regulations, and requirements of governmental authorities
     (including, without limitation, ERISA and the rules and regulations
     thereunder and all Environmental Requirements) except where the
     necessity of compliance therewith is contested in good faith by
     appropriate proceedings or where noncompliance would not materially
     and adversely affect the Guarantor's business or financial position.

               (g)   Accounting and Records.  The Guarantor will, and will
                     ----------------------
     cause each Subsidiary to, keep proper books of record and




























     
<PAGE>

<PAGE>
     

     account in which full, true and correct entries in conformity with
     GAAP shall be made of all dealings and transactions in relation to its
     business and activities, will maintain its fiscal reporting periods on
     the present basis.

               SECTION 5.  FINANCIAL COVENANTS.  The Guarantor hereby
     agrees that so long as any obligation, covenant or agreement which the
     Guarantor has guaranteed hereunder remains unsatisfied, it shall
     comply with, perform and observe the following covenants and
     provisions and shall cause each Subsidiary to comply with, perform and
     observe said covenants and provisions as are applicable thereto:

               (a)   Restriction on Liens.  The Guarantor will not, and
                     --------------------
     will not permit any Subsidiary to, at any time create, assume, incur
     or suffer to exist any Lien on any property or asset of any kind, real
     or personal, tangible or intangible, now owned or hereafter acquired
     by it or assign or subordinate any present or future right to receive
     assets.  Without limitation of the foregoing, the Guarantor
     specifically covenants not to cause or permit to exist any Lien on the
     Note or on the Letter of Credit.  Simultaneously with the execution
     hereof by the Guarantor, the Guarantor shall deliver the Note and the
     Letter of Credit to the Bank, and the Bank shall retain possession
     thereof until all obligations and liabilities of the Borrower to the
     Bank guaranteed by the Guarantor hereunder have been irrevocably
     satisfied in full.  The Guarantor further agrees to turn over to the
     Bank, promptly following its receipt thereof, any and all payments
     (including prepayments) made under, pursuant to or in satisfaction of
     the indebtedness evidenced by the Note or the Letter of Credit,
     excluding the payment of interest under the Note due May 31, 1994. 
     The Bank shall have the right, at its option, to apply any or all of
     the payments delivered to it pursuant to the preceding sentence to any
     of the obligations and liabilities of the Borrower guaranteed
     hereunder, or to hold such payments as additional collateral for the
     satisfaction of such obligations and liabilities, and the Guarantor
     agrees to execute and deliver to the Bank, promptly upon its request,
     such additional agreements, instruments and documents as the Bank may
     reasonably require in connection therewith.  The Bank shall have no
     liability or duty to the Guarantor at any time to collect or enforce
     any rights of the Guarantor under the Note or the Letter of Credit, or
     to preserve any rights of the Guarantor thereunder, the sole duty of
     the Bank in this regard being to exercise reasonable care with respect
     to such instruments for as long as they remain in its actual
     possession.






























     
<PAGE>

<PAGE>
     

               (b)   Consolidations, Mergers and Sales of Assets. (1) The
                     -------------------------------------------
     Guarantor will not, and will not permit any Subsidiary to, sell,
     lease, transfer or otherwise dispose of all, or substantially all, of
     the property or assets of the Guarantor or such Subsidiary to any
     other person or consolidate with or merge into any other Person or
     permit any Person to merge into the Guarantor.

               (2)   The Guarantor will not during any fiscal year sell,
     lease, transfer or otherwise dispose of any of its property or assets
     (other than in the ordinary course of business).

               (c)   Transactions with Affiliates/Shareholders.  The
                     -----------------------------------------
     Guarantor will not, and will not permit any Subsidiary to, directly or
     indirectly enter into any transaction, including without limitation,
     the purchase, sale or exchange of property or the rendering of any
     service to, the Borrower or to any Affiliate of the Borrower or the
     Guarantor except in the ordinary course of business pursuant to the
     reasonable requirements of the business of the Guarantor and upon fair
     and reasonable terms no less favorable to the Guarantor than would be
     obtained in a comparable arms-length transaction with a person not an
     Affiliate or shareholder of the Guarantor.

               (d)   Restricted Payments.  The Guarantor will not, and will
                     -------------------
     not permit any Subsidiary to, make a Restricted Payment other than the
     payment of cash dividends to UIC.

               SECTION 6.  EVENTS OF DEFAULT.  If one or more of the
     following events ("Defaults") shall have occurred and be continuing,
     whether such occurrence shall be voluntary or involuntary or comes
     about or is effected by operation of law or otherwise:

               (a)   the Borrower shall fail to pay when due any principal
     or premium of the Note when due, or shall fail to pay within five (5)
     days of the due date thereof any interest or other amount payable
     under the Loan Agreement, the Note or any of the other Loan Documents;

               (b)   the Borrower or the Guarantor shall fail to observe or
     perform any covenant, term of condition contained in the Loan
     Agreement or this Guaranty Agreement and such failure shall not be
     remedied within any specified cure period;

               (c)   any material representation, warranty, certification
     or statement made by the Borrower or the Guarantor in the Loan
     Agreement or this Guaranty Agreement or in any



























     
<PAGE>

<PAGE>
     

     certificate, financial statement or other document delivered pursuant
     thereto or hereto shall prove to have been incorrect in any material
     respect when made;

               (d)   the Borrower or the Guarantor shall fail to perform or
     observe any agreement, term or condition contained in any agreement
     for borrowed money, which failure results in or would permit the
     acceleration of the maturity of any Debt of the Borrower or the
     Guarantor and which failure is not cured within the cure period
     originally specified in such agreement;

               (e)   either the Borrower or the Guarantor (or both) shall
     commence a voluntary cause or other proceeding seeking liquidation,
     reorganization or other relief with respect to itself or its debts
     under any bankruptcy, insolvency or other similar law now or hereafter
     in effect or seeking the appointment of a trustee, receiver,
     liquidator, custodian or other similar official of it or any
     substantial part of its property, or shall consent to any such relief
     or to the appointment of or taking possession by any such official in
     an involuntary case or other proceeding commenced against it, or shall
     make a general assignment for the benefit of creditors, or shall fail
     generally to pay its debts as they become due, or shall take any
     corporate action to authorize any of the foregoing;

               (f)   an involuntary case or other proceeding shall be
     commenced against either the Borrower or the Guarantor (or both)
     seeking liquidation, reorganization or other relief with respect to it
     or its debts under any bankruptcy, insolvency or other similar law now
     or hereafter in effect or seeking the appointment of a trustee,
     receiver, liquidator, custodian or other similar official of it or any
     substantial part of its property, and such involuntary case or other
     proceeding shall remain undismissed and unstayed for a period of 60
     days; or an order for relief shall be entered against the Borrower
     under the federal bankruptcy laws as now or hereafter in effect;

               (g)   the Guarantor fails for a period of 15 days to pay one
     or more final judgments or orders for the payment of money which are
     either unappealable or unstayed, when the sum of such judgments is in
     excess of $1,000,000.00;

               (h)   if at any time UIC fails to own 100% of the issued and
     outstanding voting stock of the Guarantor;

               (i)   if an adverse change deemed material by the Bank in
     good faith shall occur with respect to the business, assets,





























     
<PAGE>

<PAGE>
     

     operations, business prospects or financial condition of the
     Guarantor; or

               (j)   an Event of Default shall occur under the Loan
     Agreement, the Note or any of the other Loan Documents.

               Upon the occurrence of any such Event of Default, the Bank
     shall have whatever rights in law or equity it might have to enforce
     this Guaranty Agreement.

               SECTION 7.  DEFINITIONS

               "Affiliate" means (i) any Person that directly, or
     indirectly through one or more intermediaries, owns 5% or more of the
     voting capital stock of the Guarantor (ii) any Person other than the
     Guarantor and a Subsidiary of the Guarantor of which 5% or more of the
     voting securities, including common stock or partnership interests, is
     owned by the Guarantor or (iii) any Person which possesses, directly
     or indirectly, the power to direct or cause the direction of the
     management or policies of a Person, whether through the ownership of
     voting securities, by contract, or otherwise.

               "Business Day" means any day except a Saturday, Sunday or
     other day on which commercial banks in the City of Baltimore are
     authorized by law to close.

               "Debt" of any Person means at any date, without duplication,
     obligations which under GAAP are shown as liabilities on the balance
     sheet of such Person, excluding accrued taxes and accrued operating
     expenses, but including (i) all obligations of such Person for
     borrowed money, (ii) all obligations of such Person evidenced by
     bonds, debentures, notes or other similar instruments, (iii) all
     obligations of such Person to pay the deferred purchase price of
     property or services (other than trade accounts payable arising in the
     ordinary course of business), (iv) all obligations of such Person as
     lessee under capital leases, (v) all obligations of such Person to
     purchase securities or other property which arise out of or in
     connection with the sale of the same or substantially similar
     securities or property, (vi) all non-contingent obligations of such
     Person to reimburse any bank or other person in respect of amounts
     paid under a letter of credit or similar instrument; (vii) all
     obligations of others secured by a Lien on any asset of such Person,
     whether or not such obligation is assumed by such Person and (viii)
     all obligations of others guaranteed by such Person.

               "Default" has the meaning specified in Section 6.




























     
<PAGE>

<PAGE>
     

               "Executive Officer" means any member of the Board of
     Directors, the President, any Vice President (including various grades
     of such office), the Treasurer or the Secretary of the Guarantor.

               "GAAP" means generally accepted accounting principles in the
     United States.

               "Letter of Credit" means Irrevocable Standby Letter of
     Credit No. P622514 dated February 26, 1985, issued by The Chase
     Manhattan Bank, N.A. for the benefit of the Guarantor in the original
     face amount of $46,000,000.00 including all amendments, extensions and
     supplements thereof and thereto.

               "Lien" means, with respect to any asset, any mortgage, lien,
     pledge, charge, security interest, or encumbrance of any kind in
     respect of such asset, including any agreement to give any of the
     foregoing.  For the purposes of this Guaranty Agreement, the Guarantor
     and its Subsidiaries shall be deemed to own subject to a Lien any
     asset which it has acquired or holds subject to the interest of a
     vendor or lessor under any conditional sale agreement, capital lease
     or other title retention agreement relating to such asset or with
     respect to which a financing statement under the Uniform Commercial
     Code of any jurisdiction has been filed or an agreement to give such a
     financing statement has been entered into.

               "Note" means, as the same may be amended, modified,
     extended, renewed, supplemented or replaced from time to time, that
     certain Promissory Note dated February 26, 1985, made by Smith &
     Nephew Investment Group, Ltd., a Delaware corporation, and payable to
     the order of the Guarantor in the original principal amount of Forty-
     Two Million Six Hundred Ninety-Nine Thousand Three Hundred Eighty-Four
     Dollars ($42,699,384.00).

               "Officer's Certificate" means a certificate signed in the
     name of the Guarantor by its President, one of its Vice Presidents,
     its Treasurer or its Secretary.

               "Person" means an individual, a corporation, a partnership,
     an association, a trust or any other entity or organization, including
     a government or political subdivision or any agency or instrumentality
     thereof.

               "Restricted Investments" means any stock or equity interest
     in, or any note or other debt of any Person other than the Company or
     the Guarantor, provided however, that the term Restricted Investments
     shall not include:  (i) direct obligations




























     
<PAGE>

<PAGE>
     

     of the U.S. Government, or obligations guaranteed by the U.S.
     Government, maturing no later than one year from the date of
     acquisition; (ii) negotiable certificates of deposit issued by banks
     having a combined capital and surplus in excess of $100,000,000 and
     are rated A or better by either Standard and Poor's Corporation or
     Moody's Investors Services, Inc. or B or better by Thompson's
     BankWatch; (iii) commercial paper with minimum rating by Standard and
     Poor's Corporation or Moody's Investors Services, Inc. of A1/P1
     maturing within 270 days; (iv) short term tax-exempt obligations given
     the highest credit rating of either Standard and Poor's Corporation or
     Moody's Investors Services, Inc.; and (v) repurchase agreements with
     commercial banks whose certificates of deposits are eligible for
     purchase under clause (ii) and which mature within 270 days.

               "Restricted Payment" means any (a) payment of cash
     dividends, (b) payment of funds to repurchase of the stock of the
     Guarantor, (c) any prepayments of subordinated debt, and (d)
     Restricted Investments.

               "Subsidiary" means any corporation at least a majority of
     the voting stock of which, now or in the future, is owned or
     controlled by the Guarantor, directly or indirectly through one or
     more Subsidiaries.

               "UIC" means United Industrial Corporation, a Delaware
     corporation.

               SECTION 8.  NOTICES.  Except as otherwise provided herein,
     any notice required hereunder shall be in writing, and shall be deemed
     to have been validly served, given or delivered after transmission by
     hand or by facsimile (if a copy thereof is promptly deposited in the
     United States malls, registered first class mail, with proper postage
     prepaid or by Federal Express) or by Federal Express or similar
     service or five business days after deposit in the United States
     mails, registered first-class mail, with proper postage prepaid and
     addressed to the party to be notified at the following addresses (or
     such other address as such party shall designate in a notice delivered
     to the other party hereunder);

               (A)   If to the Bank, to:

                     Signet Bank/Maryland
                     7 St. Paul Street
                     Baltimore, Maryland  21203
                     Attention:  Mr. David A. Bauereis





























     
<PAGE>

<PAGE>
     

               (B)   If to the Guarantor, at:

                     c/o United Industrial Corporation
                     18 East 48th Street
                     New York, New York  10017
                     Attention:  Treasurer

                     with a copy to:

                     AAI Corporation
                     York and Industry Lane
                     Cockeysville, Maryland  21030
                     Attention:  Mr. Paul J. Michaud

               SECTION 9.  SEVERABILITY.  Wherever possible, each provision
     of this Guaranty Agreement shall be interpreted in such manner as to
     be effective and valid under applicable law.  If, however, any
     provision of this Guaranty Agreement shall be prohibited by or invalid
     under applicable law, such provision shall be ineffective to the
     extent or such prohibition of invalidity, without invalidating the
     remainder of such provision or the remaining provisions of this
     Guaranty Agreement, unless the ineffectiveness of such provision
     materially and adversely alters the benefits accruing to either party
     hereunder.

               SECTION 10.  ENTIRE AGREEMENT; WAIVERS.  The Guarantor
     hereby agrees that this instrument contains the entire agreement
     between the parties with respect to the subject matter hereof and that
     there is and can be no other oral or written agreement or
     understanding whereby the provisions of this instrument have been or
     can be terminated, affected, varied, waived, amended or modified in
     any manner, unless the same be set forth in writing and consented to
     by the Bank.

               SECTION 11.  SUCCESSORS AND ASSIGNS.  This Guaranty
     Agreement shall be binding upon and inure to the benefit of the
     respective successors, participants and assigns of the Guarantor and
     the Bank.  This Guaranty Agreement shall, without further consent of,
     or notice to, the Guarantor, pass to, and may be relied upon and
     enforced by, any assignee or transferee of the Bank.

               SECTION 12.  GOVERNING LAW, ETC.  This Guaranty Agreement
     is, and shall be deemed to be, a contract entered into, under and
     pursuant to the laws of the State of Maryland, and shall be binding
     upon the Guarantor and its successors and assigns.





























     
<PAGE>

<PAGE>
     

               SECTION 13.  NO WAIVER.  No delay on the part of the Bank in
     exercising any rights hereunder or failure to exercise the same shall
     operate as a waiver of such rights; no notice to or demand on the
     Guarantor shall be deemed to be a waiver of the obligation of the
     Guarantor or of the rights of the Bank to take further action without
     notice or demand as provided herein.

               SECTION 14.  HEADINGS.  The descriptive headings of the
     several paragraphs of this Guaranty Agreement are inserted for
     convenience only and do not constitute a part of this Guaranty
     Agreement.

               SECTION 15.  COUNTERPARTS.  This Guaranty Agreement may be
     executed in any number of counterparts each of which shall be deemed
     an original, and all such counterparts shall together constitute the
     same Guaranty Agreement.

               SECTION 16.  SURVIVAL OF REPRESENTATIONS AND WARRANTIES. 
     All representations and warranties made by the Guarantor herein shall
     survive the execution and delivery of this Guaranty Agreement, the
     Loan Agreement the Note and the other Loan Documents, regardless of
     any investigation made by the Bank or the Bank's access to any
     information.

               SECTION 17.  DURATION.  This Guaranty Agreement shall remain
     in effect until all amounts payable under the Loan Agreement, the Note
     and the other Loan Documents shall have been paid in full.

               IN WITNESS WHEREOF, the Guarantor has caused this Guaranty
     Agreement to be duly executed under seal as of the date first above
     set forth.

     ATTEST/WITNESS:               UIC-DEL. CORPORATION



     ______________________        By:Robert W. Worthing  (SEAL)
                                      ------------------
                                      Title  Secretary  
                                            ------------


































     
<PAGE>

<PAGE>
     

     STATE OF _____________
     COUNTY OF ____________


               On this __th day of ________, 1994, before me, the
     undersigned officer personally appeared _________________ who
     acknowledged himself/herself to be the ______________ of UIC-Del.
     Corporation, a Delaware corporation, and that (s)he, as such
     _____________, being authorized so to do, executed the foregoing
     instrument for the purposes therein contained, by signing the name of
     the corporation by himself/herself as _______________.



                                   ______________________
                                   Notary Public


     My commission expires:_________________
      














<PAGE>





          EXHIBIT 11 -  Computation of Earnings Per Share 




            Item 6(a)
            Exhibit 11
<TABLE>
            Computation of Earnings per Share
            United Industrial Corporation and Subsidiaries

<CAPTION>

                                            Three Months Ended         Six Months Ended 
                                                June 30                     June 30      
       
                                             1994          1993         1994         1993 

      <S>                             <C>           <C>          <C>          <C>
      Primary:

        Average shares outstanding      12,258,693    12,258,693   12,258,693    12,258,693

        Net income (loss)               $1,408,000    $1,725,000   $2,462,000  $(14,732,000)

        Earnings (loss) per share           $  .11        $  .14       $  .20        $(1.20)


</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
This Schedule contains summary financial information extracted from the
financial statements contained in the body of the accompanying Form 10-Q and is
qualified in its entirety by reference to such financial statements.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   QTR-2
<FISCAL-YEAR-END>                          DEC-31-1993
<PERIOD-END>                               JUN-30-1994
<CASH>                                           2,638
<SECURITIES>                                         0
<RECEIVABLES>                                   47,547
<ALLOWANCES>                                         0
<INVENTORY>                                     50,875
<CURRENT-ASSETS>                               112,168
<PP&E>                                         125,345
<DEPRECIATION>                                  80,480
<TOTAL-ASSETS>                                 199,013
<CURRENT-LIABILITIES>                           46,856
<BONDS>                                         28,897
<COMMON>                                        14,374
                                0
                                          0
<OTHER-SE>                                      71,726
<TOTAL-LIABILITY-AND-EQUITY>                   199,013
<SALES>                                         92,292
<TOTAL-REVENUES>                                92,292
<CGS>                                           68,618
<TOTAL-COSTS>                                   89,620
<OTHER-EXPENSES>                                 (332)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               1,471
<INCOME-PRETAX>                                  4,013
<INCOME-TAX>                                     1,551
<INCOME-CONTINUING>                              2,462
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     2,462
<EPS-PRIMARY>                                      .20
<EPS-DILUTED>                                      .20
       

</TABLE>


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