Document:

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                                                                    Exhibit 10.1

                                     SECOND

                              AMENDED AND RESTATED

                                 LOAN AGREEMENT

                                  BY AND AMONG

                          DYNAMICS RESEARCH CORPORATION
                          DRC INTERNATIONAL CORPORATION
                           H.J. FORD ASSOCIATES, INC.
                              ANDRULIS CORPORATION
                          IMPACT INNOVATIONS GROUP LLC
                                as the Borrowers,

                                       and

                            THE LENDERS PARTY HERETO

                                       and

                         BROWN BROTHERS HARRIMAN & CO.,
                             as Administrative Agent
                                       and
                                 BANKNORTH, N.A.
                             as Documentation Agent
                                       and
                          KEYBANK NATIONAL ASSOCIATION
                             as Co-Syndication Agent
                                       and
                 FLEET NATIONAL BANK, a Bank of America company
                             as Co-Syndication Agent

                             as of September 1, 2004

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                                TABLE OF CONTENTS

<TABLE>
<S>                                                                                                           <C>
ARTICLE 1 - DEFINITIONS....................................................................................    2

ARTICLE 2 - AGENTED BORROWINGS.............................................................................   17

   2-1.     Designation of  Agent Borrower.................................................................   17
   2-2.     Operation of Loan Arrangement..................................................................   17
   2-3.     Loans Directly to Borrower.....................................................................   18
   2-4.     Continuation of Authority of Lead Borrower.....................................................   18
   2-5.     Concerning Joint and Several Liability of the Borrowers........................................   19
   2-6.     Indemnification................................................................................   21

ARTICLE 3 - THE REVOLVING CREDIT/LIBOR PROVISIONS..........................................................   21

   3-1.     Establishment of Revolving Credit..............................................................   21
   3-2.     Reductions of Commitment.......................................................................   22
   3-3.     Advances.......................................................................................   22
   3-4.     Risks of Value of Accounts and Inventory.......................................................   22
   3-5.     Procedures Under Revolving Credit..............................................................   22
   3-6.     The Loan Account...............................................................................   25
   3-7.     The Revolving Credit Note......................................................................   26
   3-8.     Payment of Loan Account........................................................................   26
   3-9.     Interest.......................................................................................   26
   3-10.    Duration of Interest Periods...................................................................   26
   3-11.    Changed Circumstances..........................................................................   27
   3-12.    Payments and Prepayments.......................................................................   28
   3-13.    Fees...........................................................................................   29
   3-14.    Fees For L/C's.................................................................................   29
   3-15.    Effect of Honor of L/C's.......................................................................   30
   3-16.    Additional Provisions Relating to L/C's........................................................   30
   3-17.    Indemnification................................................................................   33
   3-18.    Computation of Interest and Fees...............................................................   34
   3-19.    Overdue Payments...............................................................................   34
   3-20.    Automatic Payment..............................................................................   34
   3-21.    Additional Costs, Etc..........................................................................   34
   3-22.    Capital Adequacy...............................................................................   36
   3-23.    Lenders' Commitments...........................................................................   36
   3-24.    Replacement Lenders............................................................................   36

ARTICLE 4 - THE TERM LOAN AND THE ACQUISITION TERM LOAN....................................................   37

   4-1.     The Term Loan..................................................................................   37
   4-2.     The Acquisition Term Loan......................................................................   37
   4-3.     Interest Payments on Term Loan and the Acquisition Term Loan...................................   37
   4-4.     Principal Payments on the Term Loan and the Acquisition Term Loan..............................   38
   4-5.     Term Loan Advances.............................................................................   40
   4-6.     Administrative Agent's Records.................................................................   40
   4-7.     Interest Rate Protection.......................................................................   40

ARTICLE 5 - COLLATERAL SECURITY AND GUARANTIES.............................................................   41
</TABLE>

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<TABLE>
<S>                                                                                                           <C>
   5-1.     Security of Borrowers..........................................................................   41
   5-2.     Assignment of Claims Compliance Event..........................................................   41
   5-3.     Collateral Release Event.......................................................................   42

ARTICLE 6 - CONDITIONS PRECEDENT...........................................................................   43

   6-1.     Corporate Due Diligence........................................................................   43
   6-2.     Opinion........................................................................................   44
   6-3.     Officers' Certificates.........................................................................   44
   6-4.     Guaranties.....................................................................................   44
   6-5.     Collateral Interests...........................................................................   44
   6-6.     Perfection Certificates and UCC Search Results.................................................   44
   6-7.     Consents and Approvals.........................................................................   44
   6-8.     All Fees and Expenses Paid.....................................................................   45
   6-9.     Lockbox........................................................................................   45
   6-10.    Additional Documents...........................................................................   45
   6-11.    Consummation of Impact Acquisition.............................................................   45
   6-12.    Evidence of Dissolution of Subsidiaries........................................................   45
   6-13.    No Defaults under Applicable law or Material Agreements........................................   45
   6-14.    No Litigation..................................................................................   45
   6-15.    Representations and Warranties.................................................................   45
   6-16.    No Suspension Event............................................................................   45
   6-17.    No Adverse Change..............................................................................   46

ARTICLE 7 - GENERAL REPRESENTATIONS, WARRANTIES AND COVENANTS..............................................   46

   7-1.     Payment and Performance of Liabilities.........................................................   46
   7-2.     Due Organization - Corporate Authorization - No Conflicts......................................   46
   7-3.     Maintain Accounts..............................................................................   47
   7-4.     Trade Names....................................................................................   47
   7-5.     Locations......................................................................................   48
   7-6.     Title to Collateral............................................................................   48
   7-7.     Indebtedness...................................................................................   49
   7-8.     Insurance Policies.............................................................................   50
   7-9.     Licenses.......................................................................................   51
   7-10.    Leases.........................................................................................   51
   7-11.    Requirements of Law............................................................................   52
   7-12.    Maintain Properties............................................................................   52
   7-13.    Pay Taxes......................................................................................   52
   7-14.    No Margin Stock................................................................................   53
   7-15.    ERISA..........................................................................................   53
   7-16.    Hazardous Materials............................................................................   54
   7-17.    Litigation.....................................................................................   54
   7-18.    Dividends, etc.................................................................................   54
   7-19.    Guarantees and Investments.....................................................................   55
   7-20.    New Leases.....................................................................................   56
   7-21.    Mergers and Consolidations.....................................................................   57
   7-22.    Sale of Collateral.............................................................................   57
   7-23.    Protection of Collateral.......................................................................   58
</TABLE>

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<TABLE>
<S>                                                                                                           <C>
   7-24.    Line of Business...............................................................................   58
   7-25.    Affiliate Transactions.........................................................................   58
   7-26.    Additional Assurances..........................................................................   59
   7-27.    Adequacy of Disclosure.........................................................................   59
   7-28.    Government Contracts...........................................................................   59
   7-29.    Capital Expenditures...........................................................................   60
   7-30.    Other Covenants................................................................................   60

ARTICLE 8 - INTENTIONALLY OMITTED..........................................................................   60

ARTICLE 9 - AMENDED AND RESTATED LOAN AGREEMENT............................................................   60

ARTICLE 10 - AGENTS AS BORROWER'S ATTORNEY-IN-FACT.........................................................   60

   10-1.    Appointment as Attorney-In-Fact................................................................   60
   10-2.    No Obligation to Act...........................................................................   61
   10-3.    Collateral Release Event.......................................................................   61

ARTICLE 11 - FINANCIAL AND OTHER REPORTING REQUIREMENTS/ FINANCIAL COVENANTS...............................   61

   11-1.    Maintain Records...............................................................................   61
   11-2.    Access to Records..............................................................................   62
   11-3.    Prompt Notice to Lender........................................................................   62
   11-4.    Financial Statements, Certificates and Information.............................................   63
   11-5.    Additional Financial Information...............................................................   65
   11-6.    Audits and Appraisals..........................................................................   65
   11-7.    Consolidated Operating Cash Flow to Total Debt Service.........................................   66
   11-8.    Consolidated Total Net Worth...................................................................   66
   11-9.    Leverage Ratio.................................................................................   66
   11-10.   Net Profit.....................................................................................   66

ARTICLE 12 - EVENTS OF DEFAULT.............................................................................   66

   12-1.    Failure to Pay.................................................................................   66
   12-2.    Failure to Make Other Payments.................................................................   67
   12-3.    Failure to Perform Certain Liabilities.........................................................   67
   12-4.    Failure to Perform Other Liabilities...........................................................   67
   12-5.    Misrepresentation..............................................................................   67
   12-6.    Default of Other Debt..........................................................................   67
   12-7.    Intentionally Omitted..........................................................................   68
   12-8.    Business Failure...............................................................................   68
   12-9.    Judgment.......................................................................................   68
   12-10.   Restraint of Business..........................................................................   69
   12-11.   Material Adverse Change........................................................................   69
   12-12.   Intentionally Omitted..........................................................................   69
   12-13.   Change in Ownership............................................................................   69
   12-14.   Casualty Loss..................................................................................   69
   12-15.   Material Agreement.............................................................................   69
   12-16.   Termination of Existence.......................................................................   69
   12-17.   Termination of Guaranty........................................................................   69
</TABLE>

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<TABLE>
<S>                                                                                                           <C>
   12-18.   Challenge to Loan Documents....................................................................   70
   12-19.   Indictment - Forfeiture........................................................................   70

ARTICLE 13 - RIGHTS AND REMEDIES UPON DEFAULT..............................................................   70

   13-1.    Termination of Commitments.....................................................................   70
   13-2.    Rights and Remedies............................................................................   71
   13-3.    Distribution of  Collateral Proceeds...........................................................   72

ARTICLE 14 - NOTICES.......................................................................................   72

   14-1.    Notice Addresses...............................................................................   72
   14-2.    Notice Given...................................................................................   73

ARTICLE 15 - TERM OF AGREEMENT.............................................................................   74

   15-1.    Termination of Revolving Credit................................................................   74
   15-2.    Effect of Termination..........................................................................   74

ARTICLE 16 - GENERAL.......................................................................................   74

   16-1.    Successors and Assigns.........................................................................   74
   16-2.    Severability...................................................................................   74
   16-3.    Amendments; Course of Dealing..................................................................   74
   16-4.    Intentionally Omitted..........................................................................   75
   16-5.    Costs and Expenses.............................................................................   75
   16-6.    Copies and Facsimiles..........................................................................   75
   16-7.    Massachusetts Law..............................................................................   75
   16-8.    Consent to Jurisdiction........................................................................   76
   16-9.    Indemnification................................................................................   76
   16-10.   Rules of Construction..........................................................................   77
   16-11.   Intent.........................................................................................   78
   16-12.   Setoff.........................................................................................   78
   16-13.   Maximum Interest Rate..........................................................................   78
   16-14.   Waivers........................................................................................   79
   16-15.   Payments; Application..........................................................................   79
   16-16.   Receipt of Agreement...........................................................................   80

ARTICLE 17 - THE AGENT.....................................................................................   80

   17-1.    Authorization; Non-Reliance by Lenders; Reliance by Administrative Agent; Dispute Resolution...   80
   17-2.    Employees and Agents...........................................................................   81
   17-3.    No Liability...................................................................................   82
   17-4.    No Representations.............................................................................   82
   17-5.    Funding Procedures; Payments...................................................................   82
   17-6.    Holders of Notes...............................................................................   84
   17-7.    Indemnity......................................................................................   84
   17-8.    Administrative Agent as Lender; Limitation on other Agents' Liability..........................   85
   17-9.    Resignation....................................................................................   85
   17-10.   Notification of Suspension Events and Events of Default; Distributions of Notices and Documents
     by Administrative Agent...............................................................................   85
</TABLE>

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<TABLE>
<S>                                                                                                           <C>
   17-11.   Duties in the Case of Enforcement..............................................................   86
   17-12.   Delinquent Lender..............................................................................   87
   17-13.   Assignment and Participation...................................................................   87
   17-14.   Pledge to Federal Reserve......................................................................   90
   17-15.   Consent or Approval............................................................................   90
   17-16.   Treatment of Confidential Information..........................................................   90
   17-17.   Consents, Amendments, Waivers, etc.............................................................   91
   17-18.   U.S. Patriot Act...............................................................................   93
   17-19.   Foreign Asset Control Regulations..............................................................   93
</TABLE>

                                      (v)
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SECOND AMENDED AND RESTATED LOAN AGREEMENT

                                             As of September 1, 2004

      THIS SECOND AMENDED AND RESTATED LOAN AGREEMENT (hereinafter, the
"AGREEMENT") is made by and among

                  Brown Brothers Harriman & Co., (hereinafter, the
      "ADMINISTRATIVE AGENT"), a general partnership organized under the laws of
      the State of New York with offices at 40 Water Street, Boston,
      Massachusetts 02109

                  and

                  Banknorth, N.A., (hereinafter, the "DOCUMENTATION AGENT") a
      national banking association with offices at 7 New England Executive Park,
      Burlington, Massachusetts 01803

                  and

                  KeyBank National Association, (hereinafter, a "CO-SYNDICATION
      AGENT"), a Michigan corporation with offices at 127 Public Square,
      Cleveland, Ohio 44114, and

                  Fleet National Bank, a Bank of America company, (hereinafter,
      a "CO-SYNDICATION Agent"), national banking association with offices at
      100 Federal Street, Boston, Massachusetts 02110,

as Agents on behalf of Brown Brothers Harriman & Co., Banknorth, N.A., Key
Corporate Capital Inc., Fleet National Bank, a Bank of America company, and the
other financial institutions which may hereafter become parties to this
Agreement (each such party a "LENDER" and collectively the "LENDERS")

                  and

                  Dynamics Research Corporation (hereinafter, the "LEAD
      BORROWER"), a Massachusetts corporation, with its principal executive
      offices at 60 Frontage Road, Andover, Massachusetts, as agent for itself
      and each of

                  DRC International Corporation ("INTERNATIONAL"), a
      Massachusetts corporation with its principal executive offices at 60
      Frontage Road, Andover, Massachusetts;

                  H.J. Ford Associates, Inc. ("H.J. FORD"), a Delaware
      corporation with its principal executive offices at 60 Frontage Road,
      Andover, Massachusetts;

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                  Andrulis Corporation ("ANDRULIS"), a Delaware corporation with
      its principal executive offices at 60 Frontage Road, Andover,
      Massachusetts; and

                  Impact Innovations LLC ("IMPACT"), a Delaware limited
      liability company with its principal executive offices at 60 Frontage
      Road, Andover, Massachusetts;

      (Each of the Lead Borrower, International, H.J. Ford, Andrulis and Impact
      being sometimes hereinafter referred to individually as a "BORROWER" and
      collectively as the "BORROWERS")

in consideration of the mutual covenants contained herein and benefits to be
derived herefrom.

                                   WITNESSETH:

ARTICLE 1- DEFINITIONS.

      As herein used, the following terms have the following meanings or are
defined in the section of this Agreement so indicated:

      "ACCOUNTS": include, without limitation, "accounts" as defined in the UCC,
            and also all: accounts, accounts receivable, credit card
            receivables, notes, drafts, acceptances, and other forms of
            obligations and receivables and rights to payment for credit
            extended and for goods sold or leased, or services rendered, whether
            or not yet earned by performance; all "contract rights" as formerly
            defined in the UCC; all Inventory which gave rise thereto, and all
            rights associated with such Inventory, including the right of
            stoppage in transit; all reclaimed, returned, rejected or
            repossessed Inventory (if any) the sale of which gave rise to any
            Account.

      "ACCOUNT DEBTOR": has the meaning given that term in the UCC.

      "ACQUISITION DOCUMENTATION": means those documents, instruments and
            agreements which evidence the terms and conditions of the Impact
            Acquisition, including, without limitation, that certain Equity
            Purchase Agreement dated as of August 2, 2004, by and among the Lead
            Borrower, Impact and J3 Technology Services Corp.

      "ACQUISITION TERM LOAN": is defined in Section 4-2.

      "ACQUISITION TERM NOTE": is defined in Section 4-2.

      "ADMINISTRATIVE AGENT'S RIGHTS AND REMEDIES": is defined in Section 13-2.

      "AFFECTED LENDER": is defined in Section 3-24.

      "AFFILIATE": as applied to any Person, a spouse of such Person, any
            relative (by blood, adoption or marriage) of such Person within the
            third degree, any managing member, director or officer of such
            Person, any corporation, association, firm or

                                      -2-
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            other entity of which such Person is a managing member, director or
            officer and any other Person directly or indirectly controlling,
            controlled by or under direct or indirect common Control with such
            Person.

      "AGENTS": collectively, the Documentation Agent, the Administrative Agent,
            and the Syndication Agent.

      "ANNUAL FEE": is defined in Section 3-13(c).

      "ASSIGNMENT AND ACCEPTANCE": is defined in Section 17-13(a).

      "ASSIGNMENT OF CLAIMS ACT": means, 31 U.S.C., Section 3727 et seq., and
            all rules and regulations promulgated in connection therewith, all
            as amended from time to time.

      "ASSIGNMENT OF CLAIMS COMPLIANCE EVENT": is defined in Section 5-2.

      "AVAILABILITY": is defined in Section 3-1(b).

      "BANKRUPTCY CODE": Title 11, U.S.C., as amended from time to time.

      "BASE RATE": shall mean, from time to time, the higher of (a) the "base
            rate" announced from time to time by the Administrative Agent, or
            (b) the Federal Funds Effective Rate plus one-half (.50%) percent
            per annum. Any change in such Base Rate shall be effective, for
            purposes of the calculation of interest due hereunder, when made
            effective generally by the Administrative Agent, notice of which the
            Administrative Agent shall endeavor to promptly provide to the Lead
            Borrower.

      "BASE RATE MARGIN": see Pricing Grid (as defined herein).

      "BASE MARGIN LOAN": any Revolving Credit Loan or any portion of the Term
            Loan or any portion of the Acquisition Term Loan bearing interest at
            the Base Rate.

      "BORROWERS": is defined in the Preamble.

      "BUSINESS DAY": any day other than (a) a Saturday or Sunday; (b) a day on
            which the Administrative Agent is not open to the general public to
            conduct business; or (c) a day on which banks in Boston,
            Massachusetts generally are not open to the general public for the
            purpose of conducting commercial banking business.

      "CAPITAL EXPENDITURES": any payment made directly or indirectly by any
            Borrower or any of their respective Subsidiaries for the purpose of
            acquiring or constructing fixed assets, real property or equipment
            which in accordance with GAAP would be added as a debit to the
            Consolidated fixed asset account of the Lead Borrower and its
            Subsidiaries, including without limitation amounts paid or payable
            under any conditional sale or other title retention agreement or
            under any lease or other periodic payment arrangement which is of
            such a nature that payment obligations of a borrower thereunder
            would be required by GAAP to be capitalized and

                                      -3-
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            shown as liabilities on the Consolidated balance sheet of the Lead
            Borrower and its Subsidiaries.

      "CAPITAL LEASE": any lease which should be capitalized in accordance with
            GAAP.

      "CLOSING DATE": September 1, 2004.

      "COLLATERAL": is defined in Section 5-1(a).

      "COLLATERAL INTEREST": any interest in property to secure an obligation,
            including, without limitation, a security interest, mortgage, and
            deed of trust.

      "COLLATERAL RELEASE EVENT": is defined in Section 5-3.

      "COMMITMENT": as to each Lender the amount of the Revolving Credit, the
            Term Loan and the Acquisition Term Loan set forth on Exhibit 1.

      "COMMITMENT PERCENTAGE": as to each Lender the percentage of the Revolving
            Credit, the Term Loan, and the Acquisition Term Loan set forth on
            Exhibit 1.

      "COMPLIANCE CERTIFICATE": see Exhibit 11-4(c).

      "CONFIDENTIAL INFORMATION": is defined in Section 17-16.

      "CONSOLIDATED": with reference to any term herein, shall mean that term as
            applied to the accounts of the Lead Borrower and its Subsidiaries,
            consolidated in accordance with GAAP.

      "CONSOLIDATED OPERATING CASH FLOW": shall mean, the sum of (i)
            Consolidated Net Income before taxes, plus (ii) Consolidated
            Interest Expense, plus (iii) depreciation and amortization deducted
            in the calculation of Consolidated Net Income, minus (iv) income
            taxes paid in cash (net of any tax refunds actually received in
            cash) by the Lead Borrower and its Subsidiaries, minus (v) Capital
            Expenditures not funded by interest bearing Indebtedness, all as
            determined in accordance with GAAP.

      "CONSOLIDATED TOTAL FUNDED INDEBTEDNESS": means as of the date of
            calculation, the total outstanding Indebtedness under the Revolving
            Credit Loan, the Term Loan and the Acquisition Term Loan.

      "CONSOLIDATED TOTAL NET WORTH": shall mean the difference between Total
            Assets of the Lead Borrower and its Subsidiaries and Total
            Liabilities of the Lead Borrower and its Subsidiaries (in each
            instance, exclusive of pension asset gains or losses), plus all
            Subordinated Debt less the sum of:

                        (a) the value of minority equity interests of the Lead
                        Borrower and its Subsidiaries in unconsolidated,
                        affiliated entities; and

                                      -4-
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                        (b) the aggregate amount of all loans made by the Lead
                        Borrower and its Subsidiaries to any officer, employee
                        or shareholder thereof.

      "CONTROL": Person(s) shall be deemed to Control another Person if such
            Person(s) directly or indirectly possess the power to direct or
            cause the direction of the management and policies of such other
            Person, whether through ownership of voting securities, by contract,
            or otherwise.

      "CONVERT, CONVERSION AND CONVERTED": the conversion of a Loan from one
            type to Loans of another type.

      "COSTS OF COLLECTION": includes, without limitation, all reasonable
            attorneys' fees and reasonable out-of-pocket expenses incurred by
            the Administrative Agent' or the Lenders' attorneys, and all
            reasonable out-of-pocket costs incurred by the Administrative Agent
            or any Lender in the administration of the Liabilities and/or the
            Loan Documents, including, without limitation, reasonable
            out-of-pocket costs and expenses associated with travel on behalf of
            the Administrative Agent or any Lender, which costs and expenses are
            directly or indirectly related to or in respect of the
            Administrative Agent's or any Lenders': negotiation, documentation,
            and amendment of any Loan Document; or efforts to preserve, protect,
            collect, or enforce the Liabilities, and/or the Administrative
            Agent' Rights and Remedies and/or any of the Lenders' rights and
            remedies against or in respect of any guarantor or other person
            liable in respect of the Liabilities (whether or not suit is
            instituted in connection with such efforts). The Costs of Collection
            are Liabilities and, at the Lenders' option and after written notice
            to the Lead Borrower, may bear interest at the rate which the
            Lenders may charge the Borrowers hereunder as if such had been lent,
            advanced, and credited by the Lenders to, or for the benefit of, the
            Borrowers.

      "DELINQUENT LENDER": is defined in Section 17-12.

      "DOCUMENTS OF TITLE": has the meaning given that term in the UCC.

      "EBITDA":for any period, the Consolidated Net Income of the Lead Borrower
            and its Subsidiaries for such period adjusted by adding back thereto
            amounts deducted in computing such Consolidated Net Income in
            respect of each of (a) Consolidated Interest Expense, (b) taxes in
            respect of income and profits of the Lead Borrower and its
            Subsidiaries, and (c) depreciation and amortization of the Lead
            Borrower and its Subsidiaries, as determined in accordance with
            GAAP.

      "ELIGIBLE ASSIGNEE": any of (a) a commercial bank, life insurance company
            or other entity organized under the laws of the United States, or
            any State thereof or the District of Columbia, and having total
            assets in excess of $1,000,000,000; and (b) a savings and loan
            association, savings bank or other entity organized under the laws
            of the United States, or any State thereof or the District of
            Columbia, and having a net worth of at least $100,000,000,
            calculated in accordance with generally accepted accounting
            principles.

                                      -5-
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      "EMPLOYEE BENEFIT PLAN": as defined in ERISA.

      "ENCUMBRANCE": each of the following:

                  (a) any security interest, mortgage, pledge, hypothecation,
            lien, attachment, or charge of any kind (including any agreement to
            give any of the foregoing); the interest of a lessor under a Capital
            Lease; conditional sale or other title retention agreement; sale of
            accounts receivable or chattel paper; or other arrangement pursuant
            to which any Person is entitled to any preference or priority with
            respect to the property or assets of another Person or the income or
            profits of such other Person or which constitutes an interest in
            property to secure an obligation; each of the foregoing whether
            consensual or non-consensual and whether arising by way of
            agreement, operation of law, legal process or otherwise; and

                  (b) the filing of any financing statement under the UCC or
            comparable law of any jurisdiction.

      "ENVIRONMENTAL LAWS": each of the following: (a) any federal, state, local
            or municipal law, rule, order, regulation, statute, ordinance, code,
            decree or requirement which regulates environmental protection
            matters, including, without limitation, Hazardous Materials, as is
            now or hereafter in effect; and (b) the common law relating to
            damage to Persons or property from Hazardous Materials.

      "EQUITY ISSUANCE": shall mean the sale or issuance by any Borrower of any
            shares of its stock, options or warrants for the purchase of any of
            its stock, or other equity or equity instruments.

      "ERISA": the Employee Retirement Income Security Act of 1974, as amended.

      "ERISA AFFILIATE": any Person which is under common control with any
            Borrower within the meaning of Section 4001 of ERISA or is part of a
            group which includes any Borrower and which would be treated as a
            single employer under Section 414 of the Internal Revenue Code of
            1986, as amended.

      "EVENTS OF DEFAULT": is defined in Article 12.

      "EXCESS CASH FLOW": shall mean as of the last day of any fiscal year of
            the Borrowers on a Consolidated basis, an amount equal to EBITDA at
            such date, plus net decreases in Working Capital, or as the case may
            be, less net increases in Working Capital, at such date, minus the
            following, for such period without duplication in accordance with
            GAAP: (i) Consolidated Interest Expense, (ii) principal payments on
            the Acquisition Term Loan and the Term Loan (including any mandatory
            prepayments required thereunder made or required to be made during
            such period), (iii) Capital Expenditures made during such period,
            (iv) the aggregate of all federal, state and local taxes actually
            paid during such period, and (v) cash dividends permitted pursuant
            to Section 7-18 hereof.

                                      -6-
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      "EXCESS CASH FLOW PAYMENT": is defined in Section 4-4(b).

      "EXISTING L/Cs": those L/Cs for the account of the Borrowers issued
            pursuant to the terms and conditions of the Existing Loan Agreement,
            and set forth on Exhibit BB hereto.

      "EXISTING LOAN AGREEMENT": is defined in Article 9.

      "FACILITY FEE": is defined in Section 3-13(a).

      "FEDERAL FUNDS EFFECTIVE RATE": for any day, the weighted average (rounded
            upwards, if necessary, to the next 1/100 of 1%) of the rates on
            overnight Federal funds transactions with members of the Federal
            Reserve System arranged by Federal funds brokers, as published on
            the next succeeding Business Day by the Federal Reserve Bank of New
            York, or, if such rate is not so published for any day that is a
            Business Day, the average (rounded updates, if necessary, to the
            next 1/100 of 1%) of the quotations for such date for such
            transactions received by the Administrative Agent from three Federal
            funds brokers of recognized standing selected by it.

      "FUTURE COMMITMENT": is defined in Section 17-12.

      "GAAP": principles which are consistent with those promulgated or adopted
            by the Financial Accounting Standards Board and its predecessors (or
            successors) in effect and applicable to that accounting period in
            respect of which reference to GAAP is being made.

      "GOODS": has the meaning given that term in the UCC.

      "GOVERNMENT CONTRACT": any contract, agreement or purchase order as to
            which any Borrower and the United States government or any agency or
            instrumentality thereof are parties or as to which any Borrower and
            any State or Commonwealth of the United States or any agency,
            instrumentality or political subdivision thereof are parties.

      "HAZARDOUS MATERIALS:" any (a) hazardous materials, including, without
            limitation, mold, hazardous waste, hazardous or toxic substances,
            petroleum products, which (as to any of the foregoing) are defined
            or regulated as a hazardous material in or under any Environmental
            Law described in clause (a) of the definition thereof, and (b) oil
            in any physical state.

      "IMPACT ACQUISITION": means the acquisition by the Lead Borrower of 100%
            of the equity interests in Impact from J3 Technology Services Corp.
            in accordance with the terms and conditions of the Acquisition
            Documentation.

      "INDEBTEDNESS": all indebtedness and obligations of or assumed by any
            Person on account of or in respect to any of the following: (i) in
            respect of money borrowed (including any indebtedness which is
            non-recourse to the credit of such Person but

                                      -7-
<PAGE>

            which is secured by an Encumbrance on any asset of such Person)
            whether or not evidenced by a promissory note, bond, debenture or
            other written obligation to pay money; (ii) for the payment,
            deferred for more than Thirty (30) days, of the purchase price of
            goods or services (other than current trade liabilities of such
            Person incurred in the ordinary course of business and payable in
            accordance with customary practices); (iii) in connection with any
            letter of credit or acceptance transaction (including, without
            limitation, the face amount of all letters of credit and acceptances
            issued for the account of such Person or reimbursement on account of
            which such Person would be obligated); (iv) in connection with the
            sale or discount of accounts receivable or chattel paper of any
            Borrower; (v) on account of deposits or advances; and (vi) as lessee
            under Capital Leases. "Indebtedness" of any Person shall also
            include: (x) Indebtedness of any third party secured by an
            Encumbrance on any asset of such Person, whether or not such
            Indebtedness is assumed by such Person; (y) any guaranty,
            endorsement, suretyship or other undertaking pursuant to which such
            Person may be liable on account of any obligation of any third
            party; and (z) the Indebtedness of a partnership or joint venture in
            which such Person is a general partner or joint venturer.

      "INDEMNIFIED PARTY": is defined in Section 3-17.

      "INDEMNIFIED PERSON": is defined in Section 16-9.

      "INDEMNITY AGREEMENT": a certain Indemnification Agreement Regarding
            Hazardous Materials dated February 10, 2000, as amended, executed
            by, among others, the Lead Borrower, in favor of the Administrative
            Agent and the Documentation Agent.

      "INSTALLMENT AMOUNT": is defined in Section 3-17(a).

      "INTEREST EXPENSE": for any period, with respect to any Person, the
            aggregate amount (determined in accordance with GAAP) of interest
            paid or payable during such period by such Person in respect of all
            Indebtedness for borrowed money, Capital Leases and the deferred
            purchase price of property.

      "INTEREST PERIOD": (a) With respect to each LIBOR Loan, subject to
            subsection (c), below, the period commencing on the date of the
            making or continuation of or conversion to such LIBOR Loan and
            ending one, two, three or six months thereafter, as the Lead
            Borrower may elect in the applicable Notice of Borrowing or
            Conversion.

                  (b) With respect to each Base Margin Loan, the period
            commencing on the date of the making or continuation of or
            conversion to such Base Margin Loan and ending on that date (1) as
            of which the subject Base Margin Loan is converted to a LIBOR Loan,
            as the Lead Borrower may elect in the applicable Notice of Borrowing
            or Conversion, or (2) on which the subject Base Margin Loan is paid
            by the Borrowers.

                                      -8-
<PAGE>

                  (c) Provided that the setting of Interest Periods is in all
            instances subject to the following:

                        (i) if any Interest Period with respect to a LIBOR Loan
                  would otherwise end on a day that is not a LIBOR Business Day,
                  that Interest Period shall be extended to the next succeeding
                  LIBOR Business Day unless the result of such extension would
                  be to carry such Interest Period into another calendar month,
                  in which event such Interest Period shall end on the
                  immediately preceding LIBOR Business Day;

                        (ii) if any Interest Period with respect to a Base
                  Margin Loan would end on a day that is not a Business Day,
                  that Interest Period shall end on the next succeeding Business
                  Day;

                        (iii) if the Lead Borrower shall fail to give notice as
                  provided in Section 3-10, herein, the Lead Borrower shall be
                  deemed to have requested a conversion of the affected LIBOR
                  Loan to a Base Margin Loan on the last day of the then current
                  Interest Period with respect thereto;

                        (iv) any Interest Period relating to any LIBOR Loan that
                  begins on the last LIBOR Business Day of a calendar month (or
                  on a day for which there is no numerically corresponding day
                  in the calendar month at the end of such Interest Period)
                  shall end on the last LIBOR Business Day of a calendar month;

                        (v) any Interest Period relating to any LIBOR Loan that
                  would otherwise extend beyond the Maturity Date of the
                  Revolving Credit Loans shall end on such Maturity Date; and

                        (vi) there shall be no more than six (6) Interest
                  Periods outstanding at any one time for LIBOR Loans.

      "INTEREST PAYMENT DATE": with reference to:

                  (a) any LIBOR Loan, (i) on the last day of each Interest
            Period, provided that interest on LIBOR Loans having an Interest
            Period of six months shall be payable on the last day of the third
            month of such Interest Period and on the last day of the Interest
            Period; and

                  (b) any Base Margin Loan (x) which is a Revolving Credit Loan,
            on the first day of each calendar month and on the Termination Date,
            and (y) which is a portion of the Term Loan and/or the Acquisition
            Term Loan, on the last day of each calendar quarter and on the
            Termination Date .

      "INVENTORY": includes, without limitation, "inventory" as defined in the
            UCC and also all: packaging, advertising, and shipping materials
            related to any of the foregoing, and all names or marks affixed or
            to be affixed thereto for identifying

                                      -9-
<PAGE>

            or selling the same; Goods held for sale or lease or furnished or to
            be furnished under a contract or contracts of sale or service by any
            Borrower, or used or consumed or to be used or consumed in any
            Borrower's business; Goods of said description in transit: returned,
            repossessed and rejected Goods of said description; and all
            documents (whether or not negotiable) which represent any of the
            foregoing.

      "INVESTMENTS": all expenditures made and all liabilities incurred
            (contingently or otherwise), without duplication, for the
            acquisition of stock or Indebtedness of, or for loans, advances,
            capital contributions or transfers of property to, or in respect of
            any guaranties (or other commitments as described under
            Indebtedness), or obligations of, any Person. In determining the
            aggregate amount of Investments outstanding at any particular time:
            (a) the amount of any Investment represented by a guaranty shall be
            taken at not less than the principal amount of the obligations
            guaranteed and still outstanding; (b) there shall be included as an
            Investment all interest accrued with respect to Indebtedness
            constituting an Investment unless and until such interest is paid;
            (c) there shall be deducted in respect of each such Investment any
            amount received as a return of capital (but only by repurchase,
            redemption, retirement, repayment, liquidating dividend or
            liquidating distribution); (d) there shall not be deducted in
            respect of any Investment any amounts received as earnings on such
            Investment, whether as dividends, interest or otherwise, except that
            accrued interest included as provided in the foregoing clause (b)
            may be deducted when paid; and (e) there shall not be deducted from
            the aggregate amount of Investments any decrease in the value
            thereof.

      "INVESTMENT PROPERTY": has the meaning given that term in the UCC.

      "L/C": any letter of credit, the issuance of which is procured by the
            Lender for the account of any Borrower and any acceptance made on
            account of such letter of credit.

      "LEASE": any lease or other agreement, no matter how styled or structured,
            pursuant to which any Borrower is entitled to the use or occupancy
            of any space.

      "LENDER" OR "LENDERS": are defined in Preamble.

      "LEVERAGE RATIO": is described in Section 11-9.

      "LIABILITIES" includes, without limitation, all and each of the following,
            whether now existing or hereafter arising:

                  (a) Any and all direct and indirect liabilities, debts, and
            obligations of any Borrower to the Administrative Agent or any
            Lender, each of every kind, nature, and description arising under
            this Agreement or any of the other Loan Documents.

                                      -10-
<PAGE>

                  (b) Each obligation to repay any loan, advance, indebtedness,
            note, obligation, overdraft, or amount now or hereafter owing by any
            Borrower to any Lender (including all future advances whether or not
            made pursuant to a commitment by any Lender), whether or not any of
            such are liquidated, unliquidated, primary, secondary, secured,
            unsecured, direct, indirect, absolute, contingent, or of any other
            type, nature, or description, or by reason of any cause of action
            which the Lender may hold against any Borrower arising under this
            Agreement or any of the Loan Documents.

                  (c) All interest, fees, and charges and other amounts which
            may be charged by the Administrative Agent or the Lenders to any
            Borrower and/or which may be due from any Borrower to any Lender
            from time to time arising under this Agreement or any of the Loan
            Documents.

                  (d) All costs and expenses incurred or paid by the
            Administrative Agent or the Lenders arising under this Agreement or
            any of the other Loan Documents (including, without limitation,
            Costs of Collection, reasonable attorneys' fees, and all court and
            litigation costs and expenses).

                  (e) Any and all covenants of any Borrower to or with the
            Administrative Agent or any Lender and any and all obligations of
            any Borrower to act or to refrain from acting, in each case, in
            accordance with this Agreement or any of the other Loan Documents.

      "LIBOR BUSINESS DAY": any day on which commercial banks are open for
            international business (including dealings in dollar deposits) in
            London for such other LIBOR interbank market as may be selected by
            the Administrative Agent in its sole discretion acting in good
            faith.

      "LIBOR LOAN": any Revolving Credit Loan or any portion of the Term Loan or
            any portion of the Acquisition Term Loan bearing interest at the
            LIBOR Rate.

      "LIBOR MARGIN": see Pricing Grid defined below.

      "LIBOR RATE": that per annum rate which is the aggregate of the LIBOR
            Offer Rate, plus the LIBOR Margin.

      "LIBOR OFFER RATE": that rate of interest (rounded upwards, if necessary,
            to the next 1/100 of 1%) determined by the Administrative Agent to
            be (i) the prevailing rate per annum at which deposits on U.S.
            Dollars are offered to the Lender by first-class banks in the London
            interbank market in which the Lender regularly participates at or
            about 10:00 A.M. (Boston time) three (3) LIBOR Business Days before
            the first day of the Interest Period, for a deposit approximately in
            the amount of the subject LIBOR Loan for a period of time
            approximately equal to such Interest Period, divided by (ii) one
            minus the Reserve Percentage.

      "LINE (UNUSED) FEE": is defined in Section 3-13(b).

                                      -11-
<PAGE>

      "LINE FEE PERCENTAGE": see Pricing Grid defined below.

      "LOAN": any Revolving Credit Loan, Term Loan or the Acquisition Term Loan.

      "LOAN ACCOUNT": is defined in Section 3-6.

      "LOAN DOCUMENTS": this Agreement, the Notes, the Indemnity Agreement, the
            Security Documents, and each other instrument and document executed
            and/or delivered as contemplated by Article 6, below, and each other
            instrument or document from time to time executed and/or delivered
            in connection with the arrangements contemplated hereby, including,
            without limitation, any transaction which arises out of any cash
            management, depository, investment, letter of credit, interest rate
            protection, or equipment leasing services provided by any Lender or
            any Affiliate of any Lender, each may be amended from time to time.

      "MATERIAL ADVERSE CHANGE": any event, matter or condition which has or
            could reasonably be expected to have a material adverse effect on
            (a) the business, condition (financial or otherwise), assets
            (including intangible assets), properties, income or prospects of
            the Borrowers (taken as a whole), (b) the Borrowers' ability to pay
            and perform all of the Liabilities owing by them to the
            Administrative Agent and the Lenders in accordance with the terms
            thereof, and/or (c) the Collateral (or any material portion
            thereof).

      "MATURITY DATE": as to the Revolving Credit, September 1, 2009; as to the
            Term Loan, May 1, 2010, and as to the Acquisition Term Loan,
            September 1, 2009.

      "MOODY'S": Moody's Investor Services, Inc.

      "MORTGAGE": the Mortgage, Security Agreement and Assignment dated February
            10, 2000 made by the Lead Borrower in favor of the Administrative
            Agent, as amended and in effect covering the Real Estate, as
            amended.

      "NET INCOME": income (or loss), excluding extraordinary items of income
            (or loss), of a Person for the period in question (taken as a
            cumulative whole), after deducting therefrom all operating expenses,
            reserves and other proper deductions (including any minority
            interest expense), all determined in accordance with GAAP. For
            purposes hereof, the Consolidated Net Income of the Lead Borrower
            and its Subsidiaries shall include the Net Income of any other
            Persons acquired prior to the date that it either becomes a
            Subsidiary of such Borrower, is merged into or consolidated with
            such Borrower, or such other Person's assets are assigned, directly
            or indirectly, to such Borrower, provided that, in the case of each
            of the foregoing, (i) the Net Income of such other Person shall only
            be so included to the extent that such Net Income is attributable to
            such other Person or to such assets as are acquired from such other
            Person for the relevant period, all to the satisfaction of the
            Administrative Agent, and (ii) any discrepancies in accounting
            treatment between such Borrower and such other Person are conformed
            so as to make the foregoing determination, to the satisfaction of
            the Administrative Agent.

                                      -12-
<PAGE>

      "NET PROCEEDS": the gross sales price generated by the sale of any asset
            or property outside the ordinary course of business or any Equity
            Issuance, less reasonable fees and expenses (including commissions)
            customarily incurred in similar arms-length sales and transfer taxes
            directly attributable to such sale or Equity Issuance less income
            taxes payable from such proceeds within sixteen months after such
            sale.

      "NOTE(S)": the Revolving Credit Notes, the Term Notes and the Acquisition
            Term Notes.

      "PERMITTED ACQUISITION": an acquisition by any of the Borrowers of 100% of
            the capital stock or other equity interests or substantially all of
            the assets of any Person provided the Lead Borrower certifies to the
            Lenders that (i) at the time of the contemplated acquisition or
            immediately thereafter, there is no then existing Event of Default;
            (ii) the Borrowers are in compliance with all financial covenants,
            calculated exclusive and inclusive of the contemplated acquisition,
            on a pro forma basis; (iii) the acquisition is within the Borrowers'
            current business plan and accretive to earnings within the following
            twelve (12) months; (iv) at the time of the contemplated
            acquisition, there has not occurred an Assignment of Claims
            Compliance Event; and (v) such acquisition shall not require total
            consideration from the Borrowers in excess of (a) $10,000,000 for
            any single acquisition, or (b) $15,000,000 in the aggregate in any
            calendar year (except for calendar year 2004, only, each of which
            amounts shall be exceeded as a result of the consummation of the
            Impact Acquisition).

      "PERMITTED LIENS": is defined in Section 7-6.

      "PERSON": any natural person, and any corporation, trust, partnership,
            limited liability company, joint venture, or other enterprise or
            entity.

      "PRICING GRID":

<TABLE>
<CAPTION>
                               LEVEL I         LEVEL II        LEVEL III       LEVEL IV
                               -------         --------        ---------       --------
<S>                            <C>            <C>              <C>             <C>
BASIS FOR PRICING

Leverage Ratio                 < 1.50         1.50 - 1.99      2.00-2.50        > 2.50

Base Rate Margin                    0%                  0%             0%         0.50%

LIBOR Margin -Acquisition
Term Loan                        1.75%               2.25%          2.75%         3.25%

LIBOR Margin - Revolving
Credit and Term Loan             1.50%               2.00%          2.50%         3.00%

Line Fee Percentage              0.25%              0.375%          0.50%         0.50%
</TABLE>

                                      -13-
<PAGE>

      Effective as of the Closing Date, pricing shall be set at Level IV.
      Changes in pricing shall be effective five (5) Business Days after
      delivery by the Lead Borrower to the Administrative Agent of its quarterly
      Compliance Certificate together with supporting financial information
      satisfactory to the Administrative Agent, provided, however, in no event
      shall changes in pricing be made, even if the conditions for another level
      are satisfied, until the Administrative Agent receives the quarterly
      Compliance Certificate together with supporting financial information
      satisfactory to the Administrative Agent, for the Borrowers' fiscal
      quarter ending December 31, 2004, and provided further that such
      Compliance Certificate reflects that the conditions for another level have
      been satisfied.

      "REAL ESTATE": the premises located at 60 Frontage Road, Andover,
            Massachusetts.

      "REEMPLOYMENT PERIOD": is defined in Section 3-17(a).

      "RELATED ENTITY": refers to (a) any Affiliate (other than directors and
            officers); and (b) any corporation, limited liability company trust,
            partnership, joint venture, or other enterprise which: is a parent,
            brother-sister, subsidiary, or affiliate, of any Borrower; could
            have such enterprise's tax returns or financial statements
            consolidated with any Borrower; could be a member of the same
            controlled group of corporations (within the meaning of Section
            1563(a)(1), (2) and (3) of the Internal Revenue Code of 1986, as
            amended from time to time) of which any Borrower is a member;
            Controls or is Controlled by the Borrower or any Affiliate of the
            Borrower.

      "RENEWAL / CONVERSION NOTICE": is defined in Section 3-10.

      "REQUIRED LENDERS": Any two or more Lenders holding in the aggregate at
            least sixty-six and two-thirds percent (66 2/3%) of the amounts
            outstanding on the Loans, or, if no amounts are outstanding, of the
            Commitment Percentages of the Total Commitment.

      "REQUIREMENT OF LAW": as to any Person: (a)(i) all statutes, rules,
            regulations, orders, or other requirements having the force of law
            and (ii) all court orders and injunctions, arbitrator's decisions,
            and/or similar rulings, in each instance ((i) and (ii)) of or by any
            federal, state, municipal, and other governmental authority, or
            court, tribunal, panel, or other body which has or claims
            jurisdiction over such Person, or any property of such Person, or of
            any other Person for whose conduct such Person would be responsible;
            (b) that Person's charter, certificate of incorporation, articles of
            organization, and/or other organizational documents, as applicable;
            and (c) that Person's by-laws and/or other instruments which deal
            with corporate or similar governance, as applicable.

                                      -14-
<PAGE>

      "RESERVE PERCENTAGE": the decimal equivalent of the highest rate
            applicable to any Lender under regulations issued from time to time
            by the Board of Governors of the Federal Reserve System for
            determining the maximum reserve requirement of each Lender with
            respect to "Eurocurrency liabilities" as defined in such
            regulations. The Reserve Percentage applicable to a particular LIBOR
            Loan shall be based upon that in effect during the subject Interest
            Period, with changes in the Reserve Percentage which take effect
            during such Interest Period to take effect (and to consequently
            change any interest rate determined with reference to the Reserve
            Percentage) if and when such change is applicable to such loans.

      "RESPONSIBLE OFFICER": as to any Person, the president or chief executive
            officer of such Person or, with respect to financial matters, the
            chief financial officer or treasurer of such Person or, in either
            case, such other executive officers as may be designated from time
            to time by such Person in writing to the Administrative Agent.

      "REVOLVING LOAN CEILING": shall mean Thirty-seven Million Dollars
            ($37,000,000.00).

      "REVOLVING CREDIT": is defined in Section 3-1.

      "REVOLVING CREDIT LOAN": means any loan or advance made pursuant to the
            Revolving Credit.

      "REVOLVING CREDIT NOTE": is defined in Section 3-7.

      "SECURITY AGREEMENT": that certain Security Agreement by and among the
            Borrowers and the Administrative Agent, as agent for itself and for
            the benefit of the Lenders, pursuant to which, among other things,
            the Borrowers have granted to the Administrative Agent, for the
            ratable benefit of the Lenders, a security interest in substantially
            all of the assets of the Borrowers.

      "SECURITY DOCUMENTS": the Security Agreement, the Mortgage, and any other
            agreement, document or instrument now or hereafter securing the
            Liabilities.

      "S & P": Standard & Poor's Ratings Group, a division of the McGraw Hill
            Companies, Inc.

      "STATED AMOUNT": the maximum amount for which an L/C may be honored.

      "SUBORDINATED DEBT": (a) The existing Indebtedness of the Borrowers which
            is designated as "Subordinated Debt" in Exhibit 7-7 attached hereto,
            and (b) any other Indebtedness of a Borrower which matures in its
            entirety and by its terms (or by the terms of the instrument under
            which it is outstanding and to which appropriate reference is made
            in the instrument evidencing such Subordinated Debt) is made
            subordinate and junior in right of payment to the Liabilities by
            provisions reasonably satisfactory in form and substance to the
            Lenders, the Administrative Agent, and the Administrative Agent's
            counsel.

                                      -15-
<PAGE>

      "SUBSIDIARY": any partnership, corporation, limited liability company,
            association, trust, or other business entity of which the Lead
            Borrower shall at any time own directly or indirectly through a
            Subsidiary or Subsidiaries at least a majority (by number of votes)
            of the outstanding Voting Interests.

      "SUSPENSION EVENT": any occurrence, circumstance, or state of facts which
            (a) is an Event of Default; or (b) would become an Event of Default
            if any requisite notice were given and/or any requisite period of
            time were to run and such occurrence, circumstance, or state of
            facts were not absolutely cured within any applicable grace period.

      "TERM LOAN": is defined in Section 4-1.

      "TERM NOTE": is defined in Section 4-1.

      "TERMINATION DATE": the earliest of (a) the Maturity Date, or (b) the
            occurrence of an Event of Default under Section 12-8 hereof, or (c)
            the date set by the Administrative Agent by notice to the Lead
            Borrower, which notice sets the Termination Date on account of the
            occurrence of an Event of Default other than as described in Section
            12-8.

      "TOTAL ASSETS": all assets of any Borrower determined in accordance with
            GAAP.

      "TOTAL COMMITMENT": shall mean the aggregate Commitments of the Lenders as
            set forth on Exhibit I annexed hereto.

      "TOTAL DEBT SERVICE": shall mean the sum of (i) required principal
            payments made on all interest bearing Indebtedness of the Lead
            Borrower and its Subsidiaries, plus (ii) Capital Lease payments of
            the Lead Borrower and its Subsidiaries, plus (iii) to the extent not
            included in the foregoing clauses (i) and (ii), Consolidated
            Interest Expense of the Lead Borrower and its Subsidiaries, all as
            determined in accordance with GAAP.

      "TOTAL LIABILITIES": all liabilities and obligations of any Borrower
            determined in accordance with GAAP.

      "UCC": the Uniform Commercial Code as presently in effect in Massachusetts
            (Mass. Gen. Laws, Ch. 106).

      "VOTING INTERESTS": stock or similar interests, of any class or classes
            (however designated), the holders of which are at the time entitled,
            as such holders, to vote for the election of a majority of the
            directors (or persons performing similar functions) of the
            partnership, corporation, association, trust or other business
            entity involved, whether or not the right so to vote exists by
            reason of the happening of a contingency.

                                      -16-
<PAGE>

      "WORKING CAPITAL": for any period, the result of (x) the Consolidated
            current assets of the Borrowers and their Subsidiaries (exclusive of
            such Persons' cash and cash equivalents and the current portion of
            any deferred federal, state and local taxes included in the
            calculation of Consolidated current assets for such period), all
            determined in accordance with GAAP, minus (y) the Consolidated
            current liabilities of the Borrowers and their Subsidiaries
            (exclusive of the Consolidated liabilities arising out of
            Indebtedness of such Persons incurred and permitted under this
            Agreement and the current portion of any deferred federal, state and
            local taxes included in the calculation of Consolidated current
            liabilities for such period), all determined in accordance with
            GAAP.

ARTICLE 2- AGENTED BORROWINGS

      2-1. Designation of Agent Borrower. Each Borrower hereby designates the
Lead Borrower as the agent of that Borrower to discharge the duties and
responsibilities of the Lead Borrower as provided herein.

      2-2. Operation of Loan Arrangement.

            (a) Except as otherwise provided in this Article, Revolving Credit
Loans and requests for the issuance of L/Cs shall be requested solely by the
Lead Borrower as agent for each Borrower.

            (b) Any Revolving Credit Loan which may be made by the Lenders and
which is directed to the Lead Borrower is received by the Lead Borrower in trust
for that or those of the Borrowers who are intended to receive such advance. The
Lead Borrower shall distribute the proceeds of any such advances solely to the
Borrowers. Each Borrower shall be directly indebted to the Lenders for each
Revolving Credit Loan distributed to that Borrower by the Lead Borrower,
together with all accrued interest thereon, as if that amount had been advanced
directly by the Lenders to that Borrower (whether or not the subject advance was
based upon the accounts of the Borrower which actually received such
distribution), in addition to which each Borrower shall be obligated to the
Lenders in that amount on account of that Borrower's having guarantied the
Liabilities.

            (c) The Administrative Agent and the Lenders shall have no
responsibility to inquire as to the distribution of the Revolving Credit Loans
made through the Lead Borrower as described herein.

      2-3. Loans Directly to Borrower.(a) If, for any reason, and at any time
during the term of this Agreement,(i) any Borrower, including the Lead Borrower
as agent for the Borrowers, shall be unable to, or prohibited from carrying out
the terms and conditions of this Agreement (as determined by the Administrative
Agent in the Administrative Agent' sole and absolute discretion); or

            (ii) the Administrative Agent deems it inexpedient (in the
Administrative Agent's sole and absolute discretion) to continue making
Revolving Credit Loans and issue L/Cs to or for the account of any particular
Borrower, or to channel such Revolving Credit Loans and L/Cs through the Lead
Borrower,

                                      -17-
<PAGE>

then the Lenders may make Revolving Credit Loans directly to, and issue L/Cs
directly for the account of, such of the Borrowers as the Administrative Agent
determines to be expedient, which Revolving Credit Loans or issuances of L/Cs
may be made without regard to the procedures otherwise included in this Article
2.

            (b) In the event that the Administrative Agent determines to forgo
the procedures included herein pursuant to which Revolving Credit Loans and L/Cs
are to be channeled through the Lead Borrower, then the Administrative Agent may
designate one or more of the Borrowers to fulfill the financial and other
reporting requirements otherwise imposed herein upon the Lead Borrower.

            (c) Each of the Borrowers shall remain liable to the Lenders for the
joint and several payment and performance of all Liabilities notwithstanding any
determination by the Administrative Agent to cease making Revolving Credit Loans
or issue L/Cs to or for the benefit of any Borrower.

      2-4. Continuation of Authority of Lead Borrower. The authority of the Lead
Borrower to request Revolving Credit Loans on behalf of, and to bind, the
Borrowers, shall continue unless and until the Administrative Agent acts as
provided in Section 2-3, above, or the Administrative Agent actually receives

            (a) written notice of: (i) the termination of such authority, and
      (ii) the subsequent appointment of a successor Lead Borrower, which notice
      is signed by the respective Responsible Officer of each Borrower then
      eligible for borrowing under this Agreement; and

            (b) written notice from such successive Lead Borrower (i) accepting
      such appointment; (ii) acknowledging that such removal and appointment has
      been effected by the respective Responsible Officer of such Borrowers
      eligible for borrowing under this Agreement; and (iii) acknowledging that
      from and after the date of such appointment, the newly appointed Lead
      Borrower shall be bound by the terms hereof, and that as used herein, the
      term "Lead Borrower" shall mean and include the newly appointed Lead
      Borrower.

      2-5. Concerning Joint and Several Liability of the Borrowers.

            (a) Each of the Borrowers is accepting joint and several liability
hereunder and under the other Loan Documents in consideration of the financial
accommodations to be provided by the Lenders and the Administrative Agent under
this Agreement, for the mutual benefit, directly and indirectly, of each of the
Borrowers and in consideration of the undertakings of each other Borrower to
accept joint and several liability for the Liabilities.

            (b) Each of the Borrowers, jointly and severally, hereby irrevocably
and unconditionally accepts, not merely as a surety but also as a co-debtor,
joint and several liability with the other Borrowers, with respect to the
payment and performance of all of the Liabilities (including, without
limitation, any Liabilities arising under this Section 2-5), it being the
intention of the parties hereto that all of the Liabilities shall be joint and
several obligations of each of the Borrowers, without preferences or distinction
among them.

                                      -18-
<PAGE>

            (c) If and to the extent that any of the Borrowers shall fail to
make any payment with respect to any of the Liabilities as and when due or to
perform any of the Liabilities in accordance with the terms thereof, then in
each such event the other Borrowers will make such payment with respect to, or
perform, such Liability.

            (d) The Liabilities of each of the Borrowers under the provisions of
this Section 2-5 constitute the full recourse Liabilities of each of the
Borrowers enforceable against each such Borrower to the full extent of its
properties and assets, irrespective of the validity, regularity or
enforceability of this Agreement or any other circumstance whatsoever.

            (e) Except as otherwise expressly provided in this Agreement, each
of the Borrowers hereby waives notice of acceptance of its joint and several
liability, notice of any Loans made or L/Cs issued under this Agreement, notice
of the occurrence of any Event of Default, or of any demand for any payment
under this Agreement, notice of any action at any time taken or omitted by any
Lender or the Administrative Agent under or in respect of any of the
Liabilities, any requirement of diligence or to mitigate damages and, generally,
to the extent permitted by applicable law, all demands, notices and other
formalities of every kind in connection with this Agreement. Each of the
Borrowers hereby assents to, and waives notice of, any extension or postponement
of the time for the payment of any of the Liabilities, the acceptance of any
payment of any of the Liabilities, the acceptance of any partial payment
thereon, any waiver, consent or other action or acquiescence by any Lender or
the Administrative Agent at any time or times in respect of any Event of Default
by any of the Borrowers in the performance or satisfaction of any term,
covenant, condition or provision of this Agreement, any and all other
indulgences whatsoever by any Lender or the Administrative Agent in respect of
any of the Liabilities, and the taking, addition, substitution or release, in
whole or in part, at any time or times, of any security for any of the
Liabilities or the addition, substitution or release, in whole or in part, of
any of the Borrowers. Without limiting the generality of the foregoing, each of
the Borrowers assents to any other action or delay in acting or failure to act
on the part of any Lender or the Administrative Agent with respect to the
failure by any of the Borrowers to comply with any of its respective
Liabilities, including, without limitation, any failure strictly or diligently
to assert any right or to pursue any remedy or to comply fully with applicable
laws or regulations thereunder, which might, but for the provisions of this
Section 2-5, afford grounds for terminating, discharging or relieving any of the
Borrowers, in whole or in part, from any of its Liabilities under this Section
2-5, it being the intention of each of the Borrowers that, so long as any of the
Liabilities hereunder remain unsatisfied, the Liabilities of such Borrowers
under this Section 2-5 shall not be discharged except by performance and then
only to the extent of such performance. The joint and several liability of the
Borrowers hereunder shall continue in full force and effect notwithstanding any
absorption, merger, amalgamation or any other change whatsoever in the name,
membership, constitution or place of formation of any of the Borrowers, any
Lender or any Agent.

            (f) The provisions of this Section 2-5 are made for the benefit of
the Lenders and the Administrative Agent and their respective successors and
assigns, and may be enforced by it or them from time to time against any or all
of the Borrowers as often as occasion therefor may arise and without requirement
on the part of the Lenders or the Agent or such successor or assign first to
marshall any of its or their claims or to exercise any of its or their rights
against any of the other Borrowers or to exhaust any remedies available to it or
them against any of the

                                      -19-
<PAGE>

other Borrowers or to resort to any other source or means of obtaining payment
of any of the Liabilities hereunder or to elect any other remedy. The provisions
of this Section 2-5 shall remain in effect until all of the Liabilities shall
have been paid in full or otherwise fully satisfied. If at any time, any
payment, or any part thereof, made in respect of any of the Liabilities, is
rescinded or must otherwise be restored or returned by any Lender or the Agent
upon the insolvency, bankruptcy or reorganization of any of the Borrowers, or
otherwise, the provisions of this Section 2-5 will forthwith be reinstated in
effect, as though such payment had not been made.

            (g) Each of the Borrowers hereby agrees that it will not enforce any
of its rights of contribution or subrogation against the other Borrowers with
respect to any liability incurred by it hereunder or under any of the other Loan
Documents, any payments made by it to any of the Lenders or the Agent with
respect to any of the Liabilities or any collateral security therefor until such
time as all of the Liabilities have been irrevocably paid in full in cash. Any
claim which any Borrower may have against any other Borrower with respect to any
payments to the Lenders or the Agent hereunder or under any other Loan Documents
are hereby expressly made subordinate and junior in right of payment, without
limitation as to any increases in the Liabilities arising hereunder or
thereunder, to the prior payment in full of the Liabilities and, in the event of
any insolvency, bankruptcy, receivership, liquidation, reorganization or other
similar proceeding under the laws of any jurisdiction relating to any Borrower,
its debts or its assets, whether voluntary or involuntary, all such Liabilities
shall be paid in full before any payment or distribution of any character,
whether in cash, securities or other property, shall be made to any other
Borrower therefor.

            (h) Each of the Borrowers hereby agrees that the payment of any
amounts due with respect to the indebtedness owing by any Borrower to any other
Borrower is hereby subordinated to the prior payment in full in cash of the
Liabilities. Each Borrower hereby agrees that after the occurrence and during
the continuance of any Default or Event of Default, such Borrower will not
demand, sue for or otherwise attempt to collect any indebtedness of any other
Borrower owing to such Borrower until the Liabilities shall have been paid in
full in cash. If, notwithstanding the foregoing sentence, such Borrower shall
collect, enforce or receive any amounts in respect of such indebtedness, such
amounts shall be collected, enforced and received by such Borrower as trustee
for the Agent and be paid over to the Agent for the pro-rata accounts of the
Lenders to be applied to repay the Liabilities.

      2-6. Indemnification. The Lead Borrower and each Borrower respectively
shall indemnify, defend, and save and hold the Administrative Agent and each
Lender harmless from and against any liabilities, claims, demands, expenses, or
losses made against or suffered by the Administrative Agent or any Lender on
account of, or arising out of, the Loans, the Administrative Agent and each
Lenders' reliance upon loan requests made by the Lead Borrower, or any other
action taken by the Administrative Agent and each Lender hereunder or under any
of the Loan Documents, except for any liability, claim, demand, expense, or loss
as to which a final judicial determination is made and from which no appeal is
available (in a proceeding in which the Administrative Agent and each Lender has
had an opportunity to be heard) that the Administrative Agent or any Lender had
acted in a grossly negligent manner, in actual bad faith or with willful
misfeasance.

                                      -20-
<PAGE>

ARTICLE 3 - THE REVOLVING CREDIT/LIBOR PROVISIONS

      3-1. Establishment of Revolving Credit.

            (a) The Lenders hereby establish a revolving line of credit
(hereinafter, the "REVOLVING CREDIT") in the Borrowers' favor pursuant to which
each Lender, subject to, and in accordance with, this Agreement, severally
agrees to make Revolving Credit Loans and issue L/Cs and otherwise provide
financial accommodations to and for the account of the Borrowers, in each
instance up to the amount of such Lender's Commitment Percentage of
Availability, but in no event exceeding the maximum amount of such Lender's
Commitment. The amount available for borrowing under the Revolving Credit shall
be determined by the Lenders by reference to Availability, as determined by the
Lenders from time to time hereafter.

            (b) As used herein, the term "AVAILABILITY" refers at any time to up
to:

                        (A) the Revolving Loan Ceiling

                  Minus

                        (B) The then unpaid principal balance of the Loan
            Account

                  Minus

                        (C) The aggregate amounts then undrawn on all
            outstanding L/C's, acceptances or any other accommodations issued or
            incurred, or caused to be issued or incurred, by the Lenders for the
            account and/or the benefit of any of the Borrowers.

            (c) The proceeds of borrowings under the Revolving Credit shall be
utilized solely to pay transaction costs, for working capital purposes, for
repayment of draws under any L/C, for Permitted Acquisitions, and for general
corporate purposes.

      3-2. Reductions of Commitment. The Total Commitment with respect to the
Revolving Credit may be voluntarily reduced, at the Borrowers' option, in
minimum increments of $1,000,000.00, with any payment of interest, subject to
the payment of the Line (Unused) Fee described below.

      3-3. Advances. [Intentionally omitted].

      3-4. Risks of Value of Accounts and Inventory. [Intentionally omitted].

      3-5. Procedures Under Revolving Credit.

            (a) The Lead Borrower may request Revolving Credit Loans from time
to time under, in each instance in accordance with such procedures as may from
time to time be acceptable to the Administrative Agent, including, without
limitation, notice to the Administrative Agent of any requested borrowing by
11:00 A.M. Boston, Massachusetts time on the proposed day of the subject
Revolving Credit Loans.

                                      -21-
<PAGE>

            (b) Subject to the provisions of this Agreement, a Revolving Credit
Loan duly and timely requested by the Lead Borrower shall be made and L/Cs shall
be issued pursuant hereto, provided that:

                  (i) The Availability will not be exceeded; and

                  (ii) The Revolving Credit has not been suspended as provided
      in Section 3-5(h).

            (c) (i) A Revolving Credit Loan or advance shall be deemed to have
been made under the Revolving Credit upon the charging of the amount of such
Revolving Credit Loan to the Loan Account.

                  (ii) There shall not be any recourse to, nor liability of, the
      Administrative Agent or the Lenders on account of any of the following:

                        (A) (1) Any reasonable delay in the Lenders' making of
            any Revolving Credit Loan requested under the Revolving Credit,
            and/or (2) any decline by the Lenders to make, any Revolving Credit
            Loan requested under the Revolving Credit while any Suspension Event
            or Event of Default has occurred and is continuing.

                        (B) Any delay in the proceeds of any such Revolving
            Credit Loan constituting collected funds.

                        (C) Any delay in the receipt, and/or any loss, of funds
            which constitute a Revolving Credit Loan, the wire transfer of which
            was properly initiated by the Administrative Agent in accordance
            with wire instructions provided to the Administrative Agent by the
            Lead Borrower.

                  (iii) The Administrative Agent may rely on any request for a
      Revolving Credit Loan or financial accommodation which the Administrative
      Agent, in good faith, believes to have been made by a person duly
      authorized to act on behalf of the Lead Borrower and may decline to make
      any such requested Revolving Credit Loan or to provide any such financial
      accommodation pending the Administrative Agent's being furnished with such
      documentation concerning that person's authority to act as may be
      satisfactory to the Administrative Agent.

            (d) A request by the Lead Borrower for any financial accommodation
under the Revolving Credit or of the issuance of an L/C or any other
accommodations shall be irrevocable and shall constitute certification by the
Lead Borrower and each Borrower that as of the date of such request, each of the
following is true and correct:

                  (i) There has been no Material Adverse Change in the
      Borrowers' financial condition taken as a whole, from the most recent
      financial information furnished the Lenders pursuant to this Agreement.

                                      -22-
<PAGE>

                  (ii) Each representation which is made herein or in any of the
      Loan Documents is then true and complete as of and as if made on the date
      of such request (except to the extent such representation refers to a
      specific earlier date).

                  (iii) No Suspension Event is then extant.

            (e) The Borrowers shall immediately become indebted to the Lenders
for the amount of each Revolving Credit Loan under or pursuant to this Agreement
when such Revolving Credit Loan is deemed to have been made.

            (f) (i) The Lead Borrower may request that the Administrative Agent
issue L/C's for the account of any Borrower. Each such request shall be in such
manner as may from time to time be acceptable to the Administrative Agent, and
which may include, without limitation, (A) telephone notice to such person as
may be designated by the Administrative Agent or (B) written notice.

                  (ii) The Administrative Agent, in the Administrative Agent's
      discretion in each instance, may issue any L/C so requested by the Lead
      Borrower, provided that

                        (A) the aggregate Stated Amount, following the requested
            issuance thereof, would not exceed the Availability;

                        (B) the L/C (if so issued) is in form satisfactory to
            the Administrative Agent;

                        (C) after giving effect to the issuance of the requested
            L/C, the aggregate Stated Amount of all L/C's then outstanding, does
            not exceed $5,000,000.00; and

                        (D) the expiry of the L/C is not later than the Maturity
            Date of the Revolving Credit.

                  (iii) The Borrowers and/or the Lead Borrower shall execute
      such documentation to apply for and support the issuance of an L/C as may
      be required by the Administrative Agent.

            (g) The Administrative Agent, without the request of the Lead
Borrower, may advance under the Revolving Credit any amount which any Borrower
is obligated to pay to the Administrative Agent or for which any Borrower or the
Administrative Agent becomes obligated on account of, or in respect to, any L/C.
Such advance shall be made and even if such advance would result in
Availability's being exceeded. Such action on the part of the Administrative
Agent shall not constitute a waiver by the Administrative Agent or any Lender of
its rights under Section 3-6(e) below.

            (h) Upon the occurrence from time to time of any Suspension Event:

                                      -23-
<PAGE>

                  (i) The Administrative Agent, with the prior written consent
      of the Required Lenders may, or shall, at the request of the Required
      Lenders, suspend the Revolving Credit immediately.

                  (ii) The Lenders shall not be obligated to make any loans or
      advance, or to provide any financial accommodation hereunder or to issue
      any L/C.

                  (iii) The Administrative Agent, with the prior written consent
      of the Required Lenders may, or shall, at the request of the Required
      Lenders, suspend the right of the Lead Borrower to request any LIBOR Loan
      or to convert any Base Margin Loan to a LIBOR Loan.

            (i) Subject to the satisfaction of all conditions precedent
hereunder, each Lender will make available to the Administrative Agent on the
proposed date of any Revolving Credit Loan by wire transfer of immediately
available funds not later than 1:00 P.M., Boston time, the aggregate amount of
its Commitment Percentage of such Revolving Credit Loan requested by the Lead
Borrower, and the Administrative Agent shall promptly advance such amounts to
the Lead Borrower in accordance with the terms hereof.

      3-6. The Loan Account.

            (a) An account (hereinafter, the "LOAN ACCOUNT") shall be opened on
the books of the Administrative Agent, in which Loan Account a record may be
kept of all Revolving Credit Loans made by the Lenders to the Borrowers under or
pursuant to the Revolving Credit and of all payments thereon.

            (b) The Administrative Agent may also keep a record (either in the
Loan Account or elsewhere, as the Administrative Agent may from time to time
elect) of all interest, fees, service charges, costs, expenses, and other debits
owed the Administrative Agent and each Lender on account of the Liabilities
under the Revolving Credit and of all credits against such amounts so owed.

            (c) All credits against the Liabilities shall be conditional upon
final payment to the Administrative Agent of the items giving rise to such
credits. The amount of any item credited against the Liabilities which is
charged back against the Administrative Agent for any reason or is not so paid
shall be a Liability and shall be added to the Loan Account, whether or not the
item so charged back or not so paid is returned.

            (d) Except as otherwise provided herein, all fees, service charges,
costs, and expenses for which the Borrowers are obligated hereunder are payable
within thirty (30) days of notice from the Administrative Agent to the Lead
Borrower. In the determination of Availability, the Administrative Agent may
deem fees, service charges, accrued interest, and other payments as having been
advanced under the Revolving Credit whether or not such amounts are then due and
payable.

            (e) The Administrative Agent, without the request of the Lead
Borrower, may advance under the Revolving Credit any interest, fee, service
charge, or other payment to which the Administrative Agent or any Lender is
entitled from any Borrower pursuant hereto

                                      -24-
<PAGE>

(including, without limitation, any payment of principal and/or interest with
respect to the Term Loan and/or the Acquisition Term Loan) and may charge the
same to the Loan Account notwithstanding that such amount so advanced may result
in Availability's being exceeded. Any amount which is added to the principal
balance of the Loan Account as provided in this Subsection shall bear interest
at the interest rate applicable from time to time to the unpaid principal
balance of the Loan Account.

            (f) Any statement rendered by the Administrative Agent to the Lead
Borrower concerning the Liabilities shall be considered correct and accepted by
the Borrowers and shall be conclusively binding upon the Borrowers unless the
Lead Borrower provides the Administrative Agent with written objection thereto
within sixty (60) days from the mailing of such statement, which written
objection shall indicate, with particularity, the reason for such objection. The
Loan Account and the Administrative Agent's books and records concerning the
loan arrangement contemplated herein and the Liabilities shall be prima facie
evidence and proof of the items described therein.

      3-7. The Revolving Credit Note. The obligation to repay Revolving Credit
Loans, with interest as provided herein, shall be evidenced by certain notes
(hereinafter, collectively, the "REVOLVING CREDIT NOTE") payable to each Lender
in a principal amount equal to such Lender's Commitment Percentage of the
Revolving Credit, in the form of EXHIBIT 3-7, annexed hereto, executed by each
Borrower in favor of such Lender. Neither the original nor a copy of any
Revolving Credit Note shall be required, however, to establish or prove any
Liability on account thereof. In the event that a Revolving Credit Note is ever
lost, mutilated, or destroyed, the Borrowers shall execute a replacement thereof
and deliver such replacement to the subject Lender, subject to such Lender
providing a commercially reasonable indemnity in connection therewith.

      3-8. Payment of Loan Account.

            (a) The Borrowers shall repay the principal balance of the Loan
Account on the Termination Date (as to which, see Article 15, below).

            (b) The Borrowers, without notice or demand from the Administrative
Agent, shall pay the Administrative Agent that amount, from time to time, which
is necessary so that Availability is equal to or greater than $0.

            (c) The Borrowers shall repay the then entire unpaid balance of the
Loan Account upon the Termination Date.

      3-9. Interest.

            (a) Revolving Credit Loans shall initially bear interest at the Base
Rate or, at the Lead Borrower's option in accordance with the terms hereof, the
LIBOR Rate, as specified from time to time by the Lead Borrower in the
Renewal/Conversion Notice with respect to the subject Revolving Credit Loan or
as otherwise provided in this Agreement.

            (b) The Borrowers shall pay interest on each Revolving Credit Loan
in arrears on the applicable Interest Payment Date for that Loan and on the
Termination Date.

                                      -25-
<PAGE>

            (c) Following the occurrence and during the continuance of any Event
of Default (and whether or not the Lenders exercise their rights on account
thereof), upon notice from the Administrative Agent to the Lead Borrower, the
outstanding principal balance of the Revolving Credit Loans shall bear interest
at a rate per annum equal to the Base Rate plus Two and 00/100 Percent (2.00%)
per annum.

      3-10. Duration of Interest Periods.

            (a) Subject to the limitation described herein, the Lead Borrower
shall have the option to elect an Interest Period to be applicable to a
Revolving Credit Loan, or any portion of the Term Loan, or any portion of the
Acquisition Term Loan by giving notice of such election (a "RENEWAL / CONVERSION
NOTICE") in the form of EXHIBIT 3-10, annexed hereto received no later than
10:00 Boston time One (1) Business Day before the end of the then applicable
Interest Period if such Loan is to be converted to a Base Margin Loan and Three
(3) Business Days before (and not counting) the end of the then applicable
Interest Period if such Loan is to be continued as, or converted to, a LIBOR
Loan; provided, however, that (a) any Conversion of LIBOR Loans may be made only
on the last day of the respective Interest Period for such Loans, and (b) no
loan may be Converted to a LIBOR Loan when any Event of Default has occurred and
is continuing. Each such Conversion Request shall be by telephone, telecopy,
electronic mail, telex or cable, in each case confirmed immediately in writing
in the manner specified for notices herein, and shall, within the restrictions
specified above, specify (i) the date of such Conversion, (ii) the Loans to be
Converted, and (iii) if such Conversion is to LIBOR Loan the duration of the
initial Interest Period for such Loans. Each Conversion Request with respect to
LIBOR Loans shall be irrevocable and binding on the Borrowers.

            (b) If the Administrative Agent does not receive a notice of
election of, or conversion to, an Interest Period for a LIBOR Loan pursuant to
subsection (a) within the applicable time limits specified therein, the Lead
Borrower shall be deemed to have elected to convert such Loan in whole into a
Base Margin Loan on the last day of the then current Interest Period with
respect thereto.

            (c) The Lead Borrower shall not select, renew, or convert any
Revolving Credit Loan or any portion of the Term Loan or any portion of the
Acquisition Term Loan such that there are more than six (6) interest rates
applicable to the Revolving Credit Loans, the Term Loan, and the Acquisition
Term Loan in the aggregate which are LIBOR Loans at any one time.

            (d) LIBOR Loans shall each be in an amount of not less than Five
Hundred Thousand and no/100 Dollars ($500,000.00) and Five Hundred Thousand and
no/100 Dollars ($500,000.00) increments in excess of such minimum.

            (e) If after giving a Conversion Request, the Lead Borrower fails to
borrow or Convert any LIBOR Loan, the Lead Borrower shall indemnify the
Administrative Agent and each Lender against any loss or expense incurred by the
Administrative Agent and each Lender as a result of such failure, including,
without limitation, any loss or expense incurred by reason of the liquidation or
reemployment of deposits or other funds acquired by any Lender to fund or
maintain a LIBOR Loan to be made by such Lender and the compensation as provided
for in Section 3-17, herein.

                                      -26-
<PAGE>

      3-11. Changed Circumstances. In the event that:

            (a) On any day on which the rate for a LIBOR Loan would otherwise be
      set, the Administrative Agent shall have determined in good faith (which
      determination shall be final and conclusive) that adequate and fair means
      do not exist for ascertaining either such rate; or

            (b) At any time that the Administrative Agent shall have determined
      in good faith (which determination shall be final and conclusive) that:

                  (i) the continuation of or conversion of any Revolving Credit
            Loan or any portion of the Term Loan or any portion of the
            Acquisition Term Loan to a LIBOR Loan has been made impracticable or
            unlawful by (A) the occurrence of a contingency that materially and
            adversely affects the applicable market or (B) compliance by any
            Lender in good faith with any applicable law or governmental
            regulation, guideline or order or interpretation or change thereof
            by any governmental authority charged with the interpretation or
            administration thereof or with any request or directive of any such
            governmental authority having the force of law; or

                  (ii) the indices on which the interest rates for LIBOR Loans
            shall no longer represent the effective cost to the Lenders for U.S.
            dollar deposits in the interbank market for deposits in which they
            regularly participate;

      then, and in any such event, the Administrative Agent shall forthwith so
      notify the Lead Borrower thereof. Until the Administrative Agent notifies
      the Lead Borrower that the circumstances giving rise to such notice no
      longer apply, the obligation of the Lenders to make LIBOR Loans of the
      type affected by such changed circumstances or to permit the Lead Borrower
      to select the affected interest rate as otherwise applicable to any
      Revolving Credit Loans or any portion of the Term Loan or any portion of
      the Acquisition Term Loan shall be suspended. If at the time the
      Administrative Agent so notifies the Lead Borrower, the Lead Borrower has
      previously given the Administrative Agent a Renewal/Conversion Notice with
      respect to one or more LIBOR Loans, but such LIBOR Loans have not yet gone
      into effect, such notification shall be deemed to be void and the Lead
      Borrower may only borrow Base Margin Loans and shall furnish a substitute
      Renewal/Conversion Notice. Upon the expiration of the Interest Period for
      any LIBOR Loan which is outstanding on the date of such notification, the
      amount of such LIBOR Loan shall thereafter constitute a Base Margin Loan.

      3-12. Payments and Prepayments.

            (a) Base Margin Loans may be prepaid at any time and from time to
time without premium or penalty.

            (b) Any LIBOR Loan may be prepaid, upon not less than three (3)
Business Days' prior written notice to the Administrative Agent, without
penalty, provided that (1) each partial prepayment shall be in the principal
amount of $500,000.00 or an integral multiple thereof, (2) if such prepayment is
on any day other than the last day of the Interest Period

                                      -27-
<PAGE>

relating thereto, such amount prepaid shall be accompanied by any additional
amounts necessary to compensate the Lenders for any costs incurred by the
Lenders in accordance with Section 3-17, herein, including any interest or fees
payable by the Lenders to lenders of funds obtained by then in order to make or
maintain its LIBOR Loans hereunder and (3) any amount prepaid shall be
accompanied by accrued interest on the principal repaid to the date of payment.

            (c) In the event that at the time of any such prepayment Loans are
outstanding of more than one type, the amount prepaid shall be applied first to
any Base Margin Loan prior to application to any LIBOR Loans.

            (d) Any premium due hereunder upon such prepayment shall be due and
payable upon any prepayment whatsoever, whether voluntary or involuntary, to the
extent permitted by law, and after acceleration of the unpaid principal balance
of the Liabilities after the occurrence and during the continuance of an Event
of Default.

      3-13. Fees.

            (a) As compensation for the Lenders' commitment included herein to
make loans and advances to the Borrowers and as compensation for the Lenders'
maintenance of sufficient funds available for such purpose, the Lenders shall
have earned a FACILITY FEE (so referred to herein) of $625,000.00 (to be shared
by the Lenders as agreed among the Lenders).

            (b) In addition to any other fee by the Borrowers on account of the
Revolving Credit, the Borrowers shall pay to the Administrative Agent, for the
pro rata benefit of the Lenders, a LINE (UNUSED) FEE (so referred to herein) in
arrears, on the first day of each quarter (or relevant pro rata portion thereof)
(and on the Termination Date). The Line (Unused) Fee shall be equal to the Line
Fee Percentage of the average difference, during the quarter just ended (or
relevant period with respect to the payment being made on the Termination Date)
between the Revolving Loan Ceiling and the unpaid principal balance of the Loan
Account.

            (c) In addition to any other fee by the Borrowers on account of the
Revolving Credit, the Borrowers shall pay the Administrative Agent, for its own
account, an annual fee (the "ANNUAL FEE") of $20,000.00 payable upon the Closing
Date and each anniversary hereof.

            (d) The Borrower shall not be entitled to any credit, rebate or
repayment of any Facility Fee, Arrangement Fee, Annual Fee, or Line (Unused) Fee
previously earned by the Administrative Agent or the Lenders pursuant to this
Section notwithstanding any termination of this Agreement or suspension or
termination of the Lenders' obligation to make Loans and advances hereunder.

      3-14. Fees For L/C's.

            (a) Prior to the issuance of any L/C, the Borrowers shall pay to the
Administrative Agent, for the pro rata benefit of the Lenders, a fee on account
of such L/C based upon the Administrative Agent's then current fee schedule for
like L/C's.

            (b) In addition to the fee to be paid as provided in Subsection (a),
above, the Borrowers shall pay to the Administrative Agent, on demand, all
issuance, processing,

                                      -28-
<PAGE>

negotiation, amendment, and administrative fees and other amounts on account of,
or in respect to, each L/C.

      3-15. Effect of Honor of L/C's. The Borrowers shall reimburse the
Administrative Agent for the amount of any honoring of any L/C. Any such
honoring which is not so reimbursed on the Business Day when so honored shall
constitute a Revolving Credit Loan.

      3-16. Additional Provisions Relating to L/C's.

            (a) The obligations of the Borrowers with respect to L/Cs shall be
absolute and unconditional. The obligations of the Borrowers with respect to
L/Cs shall rank pari passu with the obligations of the Borrowers to repay all
other Liabilities. The Borrowers, the Administrative Agent and the Lenders
acknowledge and agree that all Existing L/Cs shall be deemed L/Cs issued
pursuant to this Agreement. The Administrative Agent's rights, powers,
privileges and immunities specified in or arising under this Agreement with
respect to L/C's are in addition to any heretofore or at any time hereafter
otherwise created or arising, whether by statute or rule of law or contract.

            (b) The Borrowers will

                  (i) promptly examine the copy of any L/C (and any amendments
      thereof) sent to it by the Administrative Agent;

                  (ii) promptly examine all instruments and documents delivered
      to it from time to time by the Administrative Agent; and

                  (iii) within three (3) Business Days of receipt thereof,
      provide the Administrative Agent with written notice of any irregularity
      or claim of non-compliance with the instructions of such person or entity.

The Borrowers are conclusively deemed to have waived any such claim against the
Administrative Agent and its correspondents unless such notice is so timely
given.

            (c) The Borrowers will

                  (i) procure promptly any necessary documentation, permits, or
      licenses for the import, export or shipping of the property in connection
      with which any L/C is issued;

                  (ii) comply with all foreign and domestic governmental
      requirements relating to the shipment or financing of such property; and

                  (iii) furnish such evidence that the above-noted requirements
      have been fulfilled as the Administrative Agent reasonably may require.

            (d) The Borrowers will jointly and severally indemnify the
Administrative Agent and each Lender for and hold harmless against any and all
claims, loss, liability, or damage, including attorneys' reasonable fees,
howsoever arising from or in connection with the

                                      -29-
<PAGE>

surrender or endorsement of any bill of lading, warehouse receipt or documents
of title at any time held by the Administrative Agent, or any of its
correspondents in connection with any L/C.

            (e) As further security for the payment or performance of any and
all Liabilities, the Borrowers hereby

                  (i) recognize and admit, so long as the Collateral Release
      Event has not occurred, the Administrative Agent's security interest in,
      and, after the occurrence and during the continuance of an Event of
      Default, the Administrative Agent's unqualified right to the possession
      and disposal of, any and all shipping documents, warehouse receipts,
      policies or certificates of insurance, and other documents accompanying or
      relative to any L/C (whether or not such documents, goods, or other
      property have been released to or upon the order of the Lead Borrower
      under a security agreement or trust or bailee receipt) and in and to the
      proceeds of each and all of the foregoing; and

                  (ii) if any third party shall have joined in the application
      for the L/C, assigns and transfers to the Administrative Agent all right,
      title and interest of the Borrowers in and to all property and interests
      which any Borrower may now or hereafter obtain from such third party
      arising in connection with the transaction to which the L/C relates, to
      the extent that same can be lawfully assigned.

            (f) Following the occurrence and during the continuance of any Event
of Default, and provided the Collateral Release Event has not occurred, the
Administrative Agent, with power of substitution and revocation, may:

                  (i) sign, in the name of the Administrative Agent, and/or the
      name of any Borrower, any document called for from any Borrower and/or
      endorse, in the name of any Borrower, any and all notes, checks, drafts,
      Documents of Title, or other instruments or documents in which the
      Administrative Agent may at any time have any interest in connection with
      any L/C; and

                  (ii) perform any obligation or agreement in connection with
      any L/C which the Administrative Agent deems necessary or desirable to
      protect the Administrative Agent' and Lenders' rights, powers and remedies
      under this Agreement and the other Loan Documents.

            (g) None of the Administrative Agent's correspondents or any
advising, negotiating, or paying bank with respect to any L/C, shall be
responsible in any way for:

                  (i) performance by any beneficiary under any L/C of that
      beneficiary's or payee's obligations to any Borrower; or

                  (ii) the form, sufficiency, correctness, genuineness,
      authority of any person signing, falsification, or the legal effect of,
      any documents called for under any L/C if (with respect to the foregoing)
      such documents on their face appear to be in order.

            (h) The Administrative Agent may honor, as complying with the terms
of any L/C and of any drawing thereunder, any drafts or other documents
otherwise in order, but signed

                                      -30-
<PAGE>

or issued by an administrator, executor, conservator, trustee in bankruptcy,
debtor in possession, assignee for the benefit of creditors, liquidator,
receiver, or other legal representative of the party authorized under such L/C
to draw or issue such drafts or other documents.

            (i) Unless otherwise agreed to, in the particular instance, the
Borrowers hereby authorize the Administrative Agent to (i) select an advising
bank, if any; (ii) select a paying bank, if any; and (iii) select a negotiating
bank.

            (j) All directions, correspondence, and funds transfers relating to
any L/C are at the risk of the Borrowers. The Administrative Agent shall have
discharged its obligations under any L/C which, or the drawing under which,
includes payment instructions, by the initiation of the method of payment called
for in, and in accordance with, such instructions (or by any other commercially
reasonable and comparable method). The Administrative Agent does not assume any
responsibility for any inaccuracy, interruption, error, or delay in transmission
or delivery by post, telegraph or cable, or for any inaccuracy of translation.

            (k) The Administrative Agent's rights, powers, privileges and
immunities specified in or arising under this Agreement are in addition to any
heretofore or at any time hereafter otherwise created or arising, whether by
statute or rule of law or contract.

            (l) Except to the extent otherwise expressly provided hereunder or
agreed to in writing by the Administrative Agent, and the Borrowers, the L/C
will be governed by the Uniform Customs and Practice for Documentary Credits,
International Chamber of Commerce, Publication No. 500, and any subsequent
revisions thereof.

            (m) If any change in any law, executive order or regulation, or any
directive of any administrative or governmental authority (whether or not having
the force of law), or in the interpretation thereof by any court or
administrative or governmental authority charged with the administration
thereof, shall either:

                  (i) impose, modify or deem applicable any reserve, special
      deposit or similar requirements against L/C's heretofore or hereafter
      caused to be issued by the Administrative Agent or any Lender or with
      respect to which the Administrative Agent or any Lender has an obligation
      to lend to fund drawings thereunder; or

                  (ii) impose on Administrative Agent or any Lender any other
      condition or requirements relating to any such L/C's;

and the result of any event referred to in clause (i) or (ii), above, shall be
to increase the cost to such Person of issuing or maintaining any L/C, then,
upon demand by such Person and delivery by such Person to the Lead Borrower of a
certificate of an officer of such Person describing such change in law,
executive order, regulation, directive, or interpretation thereof, its effect on
such Person, and the basis for determining such increased costs and their
allocation, the Borrowers within five (5) Business Days after receipt of such
notice shall pay to such Person, from time to time as specified by such Person,
such amounts as shall be sufficient to compensate such Person for such increased
cost. The Administrative Agent's or such Lender's determination of costs
incurred under clause (m) (i) or (ii) above, shall be conclusive and binding on
the Borrowers in the absence of manifest error.

                                      -31-
<PAGE>

            (n) The obligations of the Borrowers under this Agreement with
respect to L/C's are absolute, unconditional, and irrevocable and shall be
performed strictly in accordance with the terms hereof under all circumstances,
whatsoever including, without limitation, the following:

                  (i) Any lack of validity or enforceability or restriction,
      restraint, or stay in the enforcement of this Agreement, any L/C, or any
      other agreement or instrument relating thereto.

                  (ii) Any amendment or waiver of, or consent to the departure
      from, all or any of the above.

                  (iii) The existence of any claim, set-off, defense, or other
      right which the Borrowers may have at any time against the beneficiary of
      the L/C.

      3-17. Indemnification. Each Borrower jointly and severally agrees to
indemnify the Administrative Agent and each Lender and to hold the
Administrative Agent and each Lender (each an "INDEMNIFIED PARTY") harmless from
and against any loss, cost or expense (including loss of anticipated profits)
that an Indemnified Party may sustain or incur as a consequence of (a) default
by the Borrowers in payment of the principal amount of or any interest on any
LIBOR Loans as and when due and payable, including any such loss or expense
arising from interest or fees payable by an Indemnified Party to lenders of
funds obtained by it in order to maintain its LIBOR Loans, (b) default by the
Borrowers in making a borrowing or conversion after the Lead Borrower has given
(or is deemed to have given) a Conversion Request, or (c) the making of any
payment of any LIBOR Loan or the making of any conversion of any such Loan to a
Base Margin Loan on a day that is not the last day of the applicable Interest
Period with respect thereto, whether due to voluntary prepayment, payment
realized from any guarantor after the occurrence of an Event of Default, or
otherwise, including interest or fees payable by an Indemnified Party to lenders
of funds obtained by it in order to maintain any such Loans. Such loss shall
include, without limitation, an amount calculated as follows:

            (a) First, the Indemnified Party shall determine the amount by which
      (i) the total amount of interest which would have otherwise accrued
      hereunder on each installment of principal so paid or not borrowed, during
      the period beginning on the date of such payment or failure to borrow and
      ending on the date such installment would have been due (the "REEMPLOYMENT
      PERIOD"), exceeds (ii) the total amount of interest which would accrue,
      during the Reemployment Period, on any readily marketable bond or other
      obligation of the United States of America designated by the Indemnified
      Party in its sole discretion at or about the time of such payment, such
      bond or other obligation of the United States of America to be in an
      amount equal (as nearly as may be) to the amount of principal so paid or
      not borrowed and to have a maturity comparable to the Reemployment Period,
      and the interest to accrue thereon to take account of amortization of any
      discount from par or accretion of premium above par at which the same is
      selling at the time of designation. Each sum amount is hereafter referred
      to as an "INSTALLMENT AMOUNT".

                                      -32-
<PAGE>

            (b) Second, each Installment Amount shall be treated as payable as
      of the date on which the related principal installment would have been
      payable by the Borrowers had such principal installment not been prepaid
      or not borrowed.

            (c) Third, the amount to be paid on each such date shall be the
      present value of the Installment Amount determined by discounting the
      amount thereof from the date on which such Installment Amount is to be
      treated as payable, at the same annual interest rate as that payable upon
      the bond or other obligation of the United States of America designated as
      aforesaid by the Indemnified Party.

      3-18. Computation of Interest and Fees. Interest and all fees payable on
account of the Liabilities shall be computed daily on the basis of a year of 360
days and paid for the actual number of days for which due. If the due date for
any payment of principal is extended by operation of law, interest shall be
payable for such extended time. If any payment required by this Agreement or any
other Loan Document becomes due on a day that is not a Business Day, such
payment may be made on the next succeeding Business Day (or prior Business Day
in connection with a LIBOR Loan), and such extension shall be included in
computing interest in connection with such payment.

      3-19. Overdue Payments. Overdue amounts of principal, fees, costs,
expenses and charges under the Loan Documents shall bear interest from and
including the due date thereof until paid, payable on demand, at a rate equal to
the Base Rate plus Two and 00/100 Percent (2.00%) per annum.

      3-20. Automatic Payment. The Borrowers authorize the Administrative Agent
to automatically debit the Borrowers' demand deposit accounts with the
Administrative Agent on the Interest Payment Date or such other dates when due
for all principal, interest, fees, costs, commissions, service charges and
expenses due to the Lenders on account of the Liabilities.

      3-21. Additional Costs, Etc. If any present or future applicable law,
which expression, as used herein, includes statutes, rules and regulations
thereunder and interpretations thereof by any competent court or by any
governmental or other regulatory body or official charged with the
administration or the interpretation thereof and requests, directives,
instructions and notices at any time or from time to time hereafter made upon or
otherwise issued to any Lender by any central bank or other fiscal, monetary or
other authority (whether or not having the force of law), shall:

            (a) subject any Lender to any tax, levy, impost, duty, charge, fee,
      deduction or withholding of any nature with respect to this Agreement, the
      other Loan Documents, or the Loans (other than taxes based upon or
      measured by the income or profits of the Lender), or

            (b) materially change the basis of taxation (except for changes in
      taxes on income or profits) of payments to any Lender of the principal of
      or the interest on any Loans or any other amounts payable to the Lender
      under this Agreement or the other Loan Documents, or

                                      -33-
<PAGE>

            (c) impose or increase or render applicable (other than to the
      extent specifically provided for elsewhere in this Agreement) any special
      deposit, reserve, assessment, liquidity, capital adequacy or other similar
      requirements (whether or not having the force of law) against assets held
      by, or deposits in or for the account of, or loans by, or commitments of
      an office of the Lender, or

            (d) impose on any Lender any other conditions or requirements with
      respect to this Agreement, the other Loan Documents, the Loan, or any
      class of loans or commitments of which any Loan forms a part;

      and the result of any of the foregoing is

                  (i) to increase the cost to any Lender of making, funding,
            issuing, renewing, extending or maintaining any of the Loans, or

                  (ii) to reduce the amount of principal, interest or other
            amount payable to any Lender hereunder on account of any of the
            Loans, or

                  (iii) to require any Lender to make any payment or to forego
            any interest or other sum payable hereunder, the amount of which
            payment or foregone interest or other sum is calculated by reference
            to the gross amount of any sum receivable or deemed received by such
            Lender from the Borrowers hereunder,

      then, and in each such case, the Borrowers will, upon demand made by such
      Lender at any time and from time to time and as often as the occasion
      therefor may arise, pay to such Lender such additional amounts as will be
      sufficient to compensate such Lender for such additional cost, reduction,
      payment or foregone interest or other sum, provided such Lender furnishes
      the Lead Borrower and the Administrative Agent with a copy of such request
      together with an explanation therefor and such Lender makes such request
      consistent with its practices relative to similar borrowers .

      3-22. Capital Adequacy. If any Lender shall have determined that the
adoption of any applicable law, rule, regulation, guideline, directive or
request (whether or not having force of law) regarding capital requirements, or
the interpretation or administration thereof by any governmental authority,
central bank or comparable agency charged with the interpretation or
administration thereof, or compliance by such Lender with any of the foregoing
imposes or increases a requirement by such Lender to allocate capital resources
to the Loans made, or to be made, hereunder, which has or would have the effect
of reducing the return on such Lender's capital to a level below that which such
Lender could have achieved (taking into consideration such Lender's then
existing policies with respect to capital adequacy and assuming full utilization
of such Lender's capital) but for such adoption, change or compliance, by any
amount deemed by such Lender to be material: (i) such Lender shall promptly
after its commercially reasonable determination of such occurrence give notice
thereof to the Lead Borrower together with an explanation therefor; and (ii) the
Borrowers shall pay to such Lender as an additional fee from time-to-time on
demand such amount as the Lender certifies to be the amount that will

                                      -34-
<PAGE>

compensate it for such reduction. In determining such amounts, such Lender may
use any reasonable averaging and attribution methods.

      3-23. Lenders' Commitments.(a) The obligations of each Lender are several
and not joint. No Lender shall have any obligation to make any Revolving Credit
Loan in excess of the lesser of the following:

                  (i) that Lender's Commitment Percentage of the subject
      Revolving Credit Loan or of Availability,

                  (ii) that Lender's Commitment of the Revolving Credit.

            (b) No Lender shall have any liability to the Borrowers on account
of the failure of any other Lender to provide any Revolving Credit Loan nor any
obligation to make up any shortfall which may be created by such failure.

      3-24. Replacement Lenders.In the event that the Borrowers become obligated
to pay additional amounts or increased amounts to, or receive notice from, any
Lender pursuant to Section 3-11, 3-21 or 3-22 hereof (an "Affected Lender"),
then, unless such Affected Lender has theretofore removed or cured the
conditions which resulted in the obligation to pay such additional amounts or
increased amounts, and so long as no Event of Default then exists, the Borrowers
may, on thirty (30) Business Day's prior written notice from the Lead Borrower
to the Administrative Agent and the Affected Lender, cause the Affected Lender
to (and such Affected Lender shall) assign without recourse, such Affected
Lender's Commitment at such time together with all accrued but unpaid interest
and fees to either (x) another Lender willing to accept such assignment, or (y)
to an Eligible Assignee, to the extent available, in each instance pursuant to
the provisions of Section 17-13 below. Each of the Administrative Agent and the
Affected Lender shall reasonably cooperate with the Lead Borrower, without
recourse to either such Person, in effectuating the replacement of such Affected
Lender under this Section. The exercise by the Borrowers of their rights under
this Section shall be at the Borrowers' sole cost and expense and at no cost or
expense to the Administrative Agent, the Affected Lender or any of the other
Lenders. The terms of this Section shall not in any way limit the Borrowers'
obligation to pay to any Affected Lender compensation owing to such Affected
Lender pursuant to Section 3-21 or 3-22.

ARTICLE 4 - THE TERM LOAN AND THE ACQUISITION TERM LOAN.

      4-1. The Term Loan. Subject to the terms and conditions set forth in this
Agreement, each Lender severally agrees to lend to the Borrowers on the Closing
Date such Lender's Commitment Percentage of the term loan facility in the
aggregate original principal sum of $8,000,000.00 (the "TERM LOAN") to the
Borrowers pursuant to the Borrowers' Term Notes of even date (hereinafter,
collectively, the "TERM NOTE") payable to such Lender in a principal amount
equal to each such Lender's Commitment Percentage of the Term Loan, in the form
of EXHIBIT 4-1, annexed hereto, and repayable with interest as provided herein.
In the event that a Term Note is ever lost, mutilated, or destroyed, the
Borrowers shall execute a replacement thereof and deliver such replacement to
the subject Lender, subject to such Lender providing a

                                      -35-
<PAGE>

commercially reasonable indemnity in connection therewith. The Term Loan is an
amendment and restatement of the Term Loan defined in the Existing Agreement.

      4-2. The Acquisition Term Loan. Subject to the terms and conditions set
forth in this Agreement, each Lender severally agrees to lend to the Borrowers
on the Closing Date such Lender's Commitment Percentage of the acquisition term
loan facility in the aggregate original principal sum of $55,000,000.00 (the
"ACQUISITION TERM LOAN") to the Borrowers pursuant to the Borrowers' Acquisition
Term Notes of even date (hereinafter, collectively, the "ACQUISITION TERM NOTE")
payable to such Lender in a principal amount equal to each such Lender's
Commitment Percentage of the Acquisition Term Loan, in the form of EXHIBIT 4-2,
annexed hereto, and repayable with interest as provided herein. Neither the
original nor a copy of any Acquisition Term Note shall be required, however, to
establish or prove any Liability on account thereof. In the event that an
Acquisition Term Note is ever lost, mutilated, or destroyed, the Borrowers shall
execute a replacement thereof and deliver such replacement to the subject
Lender, subject to such Lender providing a commercially reasonable indemnity in
connection therewith. The proceeds of the Acquisition Term Loan shall be used to
fund the Impact Acquisition.

      4-3. Interest Payments on Term Loan and the Acquisition Term Loan(a) At
the Lead Borrower's option and in accordance with the terms of this Agreement,
each of the Term Loan and the Acquisition Term Loan shall bear interest at the
Base Rate or the LIBOR Rate, as specified from time to time by the Lead Borrower
in the Renewal/Conversion Notice with respect to any portion of the Term Loan or
the Acquisition Loan or as otherwise provided in this Agreement.

            (b) Interest on the Term Loan and the Acquisition Term Loan shall be
payable in arrears on the applicable Interest Payment Date for that Loan and on
the Termination Date.

            (c) Following the occurrence and during the continuance of any Event
of Default (and whether or not the Lenders exercise their rights on account
thereof), upon notice from the Administrative Agent to the Lead Borrower, the
outstanding principal balance of each of the Term Loan and the Acquisition Term
Loan shall bear interest at a rate per annum equal to the Base Rate plus Two and
00/100 Percent (2.00%) per annum.

      4-4. Principal Payments on the Term Loan and the Acquisition Term Loan(a)
The Borrowers shall repay the outstanding principal balance of each of the Term
Loan and the Acquisition Term Loan as follows:

                  (i) Term Loan: Each of the Borrowers jointly and severally
      promises to pay to the Administrative Agent, for the pro-rata accounts of
      the Lenders, the principal amount of the Term Loan, in equal consecutive
      quarterly installments of $125,000.00 each, such quarterly installments to
      be due and payable on August 1st, November 1st, February 1st and May 1st
      of each calendar year, commencing on November 1, 2004. Each of the
      Borrowers further agrees to pay to the Administrative Agent, for the
      pro-rata accounts of the Lenders, interest on the unpaid principal amount
      of the Term Loan from time to time outstanding from the date hereof until
      payment in full thereof at the rates per annum and on the dates set forth
      in Section 4.3 above.

                                      -36-
<PAGE>

            On the Maturity Date for the Term Loan (or such earlier date on
      which the Term Loan becomes due and payable pursuant to Article 12 below),
      the entire outstanding balance of the Term Loan (including without
      limitation, all unpaid principal, all accrued but unpaid interest and all
      unpaid fees, charges, costs and expenses) shall be immediately due and
      payable in full.

            The Borrower acknowledges that the original twenty (20) year
      schedule provided for in the Existing Agreement (and continued herein) for
      the periodic payment of unpaid principal of the Term Loan is longer than
      the time which will elapse until the Maturity Date for the Term Loan, and
      that a substantial balance or "balloon" payment of principal may be
      required on the Maturity Date for the Term Loan.

                  (ii) Acquisition Term Loan: Each of the Borrowers jointly and
      severally promises to pay to the Administrative Agent, for the pro-rata
      accounts of the Lenders, the principal amount of the Acquisition Term
      Loan, in equal consecutive quarterly installments of $1,964,286.00 each
      (except that the payment due on November 1, 2004 shall be in the amount of
      $1,309,524.00), based upon a seven (7) year amortization schedule, such
      quarterly installments to be due and payable on August 1st, November 1st,
      February 1st and May 1st of each calendar year, commencing on November 1,
      2004. Each of the Borrowers further agrees to pay to the Administrative
      Agent, for the pro-rata accounts of the Lenders, interest on the unpaid
      principal amount of the Acquisition Term Loan from time to time
      outstanding from the date hereof until payment in full thereof at the
      rates per annum and on the dates set forth in Section 4.3 above.

            On the Maturity Date for the Acquisition Term Loan (or such earlier
      date on which the Acquisition Term Loan becomes due and payable pursuant
      to Article 12 below), the entire outstanding balance of the Acquisition
      Term Loan (including without limitation, all unpaid principal, all accrued
      but unpaid interest and all unpaid fees, charges, costs and expenses)
      shall be immediately due and payable in full.

            The Borrower acknowledges that the seven (7) year schedule provided
      herein for the periodic payment of unpaid principal of the Acquisition
      Term Loan is longer than the time which will elapse until the Maturity
      Date for the Acquisition Term Loan, and that a substantial balance or
      "balloon" payment of principal may be required on the Maturity Date for
      the Acquisition Term Loan.

            (b) In addition to the principal payments required pursuant to
subsection (a) above, the Borrowers shall also make the following payments of
principal:

                  (i) commencing with the fiscal year ending December 31, 2005,
      the Borrowers shall pay annually to the Administrative Agent, for the
      ratable benefit of the Lenders, by no later than February 15 of each year,
      fifty percent (50%) of its Excess Cash Flow for the most recently
      completed fiscal year (each an "EXCESS CASH FLOW PAYMENT"). Each such
      Excess Cash Flow Payment shall be applied as follows:

                                      -37-
<PAGE>

                        (A) First, to the outstanding principal balance of the
                  Revolving Credit Loans, provided, however, the outstanding
                  principal balance of the Revolving Credit Loans on the last
                  day of the subject fiscal year compared with the outstanding
                  principal balance of the Revolving Credit Loans on the last
                  day of the previous fiscal year does not already reflect such
                  a reduction;

                        (B) Second, to the outstanding principal balance of the
                  Acquisition Term Loan, in inverse order of maturity until the
                  Acquisition Term Loan is paid in full; and

                        (C) Third, to the outstanding principal balance of the
                  Term Loan, in inverse order of maturity until the Term Loan is
                  paid in full.

                        Application of each such Excess Cash Flow Payment shall
                  not postpone or relieve the Borrowers of their obligations to
                  make the scheduled principal payments required by subsection
                  (a) above; and

                  (ii) the Borrowers shall pay the Administrative Agent, for the
      ratable benefit of the Lenders, the net proceeds of (i) sales of assets
      not in the ordinary course of business, less reasonable fees and
      commissions and, as long as no Event of Default then exists, capital gains
      or other income taxes paid or payable as a result of any such sale or
      disposition (after taking into account any available tax credits or
      deductions), (ii) 50 % (100% if an Event of Default then exists) of any
      equity offerings, (iii) debt issuances (other than, if no Event of Default
      then exists, in connection with any indebtedness permitted by Section 7-7
      or refinancing thereof pursuant to Section 7-7(d), and (iv) casualty and
      condemnation proceeds (except to the extent utilized to replace or repair
      the property subject to the casualty as long as no Event of Default then
      exists). Such net proceeds will be applied first to the outstanding
      principal balance under Term Loan and the Acquisition Term Loan, on a
      pro-rata basis, in inverse order of maturity until the Term Loan and the
      Acquisition Term Loan are paid in full, and thereafter, to all accrued and
      unpaid interest and then outstanding principal due under the Revolving
      Credit. Application of each such payments required hereunder shall not
      postpone or relieve the Borrowers of their obligations to make the
      scheduled principal payments required by subsection (a) above.

            (c) The Borrowers may prepay all or any portion of each of the Term
Loan and/or the Acquisition Term Loan without premium or penalty as provided for
in Section 3-12, except for any amounts required to be paid pursuant to Section
3-17. No such prepayment shall postpone or relieve the Borrowers of their
obligations to make the scheduled principal payments required by subsection (a)
above. No amount repaid under either of the Term Loan or the Acquisition Term
Loan may be re-borrowed.

      4-5. Term Loan Advances. Each of the Term Loan and the Acquisition Term
Loan shall be fully funded on the Closing Date, and no further advances shall be
made under either of the Term Loan or the Acquisition Term Loan.

                                      -38-
<PAGE>

      4-6. Administrative Agent's Records. The entries on the records of the
Administrative Agent concerning the Term Loan and the Acquisition Term Loan
shall be prima facie evidence of the aggregate principal amount outstanding
thereunder and interest accrued thereon. Any statement rendered by the
Administrative Agent to the Lead Borrower concerning the Term Loan and/or the
Acquisition Term Loan shall be considered correct and accepted by the Borrowers
and shall be conclusively binding upon the Borrowers unless the Lead Borrower
provides the Administrative Agent with written objection thereto within sixty
(60) days from the mailing of such statement, which written objection shall
indicate, with particularity, the reason for such objection.

      4-7. Interest Rate Protection. The Administrative Agent shall endeavor to,
and any Lender may also, offer interest rate protection agreements to the
Borrowers on the terms and conditions generally offered by the Administrative
Agent or such Lender, as the case may be, to its other similarly situated
borrowers. Any such interest rate protection agreements shall be collaterally
assigned to the Administrative Agent, for the ratable benefit of the Lenders
unless and until the Collateral Release Event occurs.

ARTICLE 5 - COLLATERAL SECURITY AND GUARANTIES.

      5-1. Security of Borrowers.

            (a) All of the Liabilities are to be secured by a perfected first
priority Collateral Interest (subject only to Permitted Liens entitled to
priority under applicable law) in all of the assets of the Borrowers and all
Subsidiaries of the Borrowers, whether now owned or hereafter acquired,
including the Real Estate, and any capital stock or other equity interests or
Investment Property owned by any Borrower (collectively, the "COLLATERAL").

            (b) The Liabilities shall also be guaranteed pursuant to the terms
of the Guaranty executed and delivered by each of the Borrowers.

      5-2. Assignment of Claims Compliance Event. Upon either (a) the occurrence
and continuance of any Event of Default, or (b)(x) the occurrence and
continuance of any of the following events described in either clauses (i) or
(ii) below (such events are hereinafter sometimes referred to as an "ASSIGNMENT
OF CLAIMS COMPLIANCE EVENT"), and (y) the delivery of written notice by the
Administrative Agent to the Lead Borrower) that an Assignment of Claims
Compliance Event has occurred, then the Borrowers shall, at the Borrowers' cost
and expense, promptly execute and deliver to the Administrative Agent such
documentation as shall be required, together with such documentation which the
Administrative Agent's counsel shall prepare and deliver to the Lead Borrower,
and take all such actions as the Administrative Agent may reasonably request in
order to comply with the Assignment of Claims Act with respect to all existing
and thereafter arising Government Contracts which are subject of the Collateral
Interest granted in favor of the Administrative Agent for the ratable benefit of
the Lenders pursuant to the Security Documents:

                  (i) At any time, the Borrowers permit their ratio of
      Borrowers' Consolidated Total Funded Indebtedness to the Borrowers'
      Consolidated trailing four

                                      -39-
<PAGE>

      quarter EBITDA (tested on a pro forma basis in connection with
      contemplated acquisitions) to be greater than the following amounts during
      the following time periods:

<TABLE>
<CAPTION>
           TIME PERIOD               MAXIMUM RATIO
           -----------               -------------
<S>                                  <C>
Closing Date through and including
December 31, 2004                    3.25 to 1.00

January 1, 2005 through and
including June 30, 2005              3.00 to 1.00

July 1, 2005 through and including
December 31, 2005                    2.50 to 1.00

January 1, 2006 and thereafter       2.00 to 1.00
</TABLE>

                  (ii) At any time, the ratio of the Borrowers' Consolidated
      Operating Cash flow to Borrowers' Total Debt Service, calculated on a
      rolling four (4) fiscal quarter basis, is less than following, during the
      following time periods:

<TABLE>
<CAPTION>
            TIME PERIOD                    MINIMUM RATIO
            -----------                    -------------
<S>                                        <C>
Closing Date through and including
December 31, 2005                           1.50 to 1.00

January 1, 2006 and thereafter              2.00 to 1.00
</TABLE>

      Upon the occurrence of a Assignment of Claims Compliance Event, the
Borrowers jointly and severally agree to take any action and to execute and
deliver all documentation reasonably requested by the Administrative Agent in
order to allow the Administrative Agent to (i) provide notice of its security
interest in and right to payment under all Government Contracts (other than
Government Contracts which are classified or otherwise prohibit assignment), and
(ii) otherwise comply in all respects with the requirements of the Assignment of
Claims Act. In connection therewith, the Borrowers shall promptly notify the
Administrative Agent of any Government Contract entered into by any Borrower and
provide a detailed description of such contractual arrangement sufficient to
allow the Administrative Agent to comply in all respects with the requirements
of the Assignment of Claims Act. In addition, the Borrowers shall, at the
Borrowers' cost and expense, execute and deliver to the Administrative Agent
such additional documents, instruments or agreements as the Administrative Agent
may reasonably require (including such document, instrument or agreement which
the Administrative Agent's counsel

                                      -40-
<PAGE>

shall prepare) to effectuate the foregoing. The failure to provide to the
Administrative Agent any such additional documents, instruments or agreements
within thirty (30) days after the Administrative Agent's request shall
constitute an immediate Event of Default hereunder.

      5-3. Collateral Release Event. Notwithstanding the provisions of Section
5-1 and 5-2, above, the Administrative Agent and the Lenders hereby agree that
upon the determination by the Administrative Agent that the Borrowers have
satisfied all of the following conditions (collectively, the "COLLATERAL RELEASE
EVENT"), which determination shall be made promptly by the Administrative Agent
exercising its commercially reasonable discretion, the Collateral Interests,
except for the Mortgage, shall be deemed released:

            (a) The Administrative Agent shall have received the financial
statements for the Borrowers' fiscal year ending December 31, 2005, which are
required to be delivered pursuant to Section 11-4(a) hereof, which financial
statements shall reflect that, (x) the consummation of the Impact Acquisition
shall not have resulted in a Material Adverse Change to the Borrowers when
compared to the financial condition of the Borrowers, on a Consolidated basis,
as of the Closing Date, and (y) the business operations of the Borrowers have
performed within, or in excess of, ninety percent (90%) of projected contract
revenues and ninety percent (90%) of projected EBITDA for such fiscal year,
based upon the annual financial projections for such fiscal year which the Lead
Borrower has provided to the Administrative Agent and which are entitled
"Statement of Projections, dated as of August 18, 2004";

            (b) The Leverage Ratio for the Borrowers' fiscal year ending
December 31, 2005, based upon the financial statements which are required to be
delivered pursuant to Section 11-4(a) hereof, is less than 2.00 to 1.00;

            (c) No Suspension Event then exists.

      The Collateral Release Event shall not be deemed effective until the
Administrative Agent has notified the Lead Borrower in writing that the
Borrowers have satisfied the conditions set forth above; provided, however, the
Administrative Agent shall promptly provide the Lead Borrower with such
notification if the Borrowers have in fact satisfied such conditions.

      To effectuate the foregoing termination and release, the Administrative
Agent will promptly execute and deliver to the Lead Borrower (or its counsel),
at the Borrowers' expense, any and all releases, UCC-3 termination statements
and other documents and instruments which the Lead Borrower (or its counsel) may
prepare and deliver to the Administrative Agent and its counsel, and which are
reasonably necessary and appropriate in order to terminate of record the
Collateral Interest granted to the Administrative Agent in all of the Collateral
(other than the Collateral Interest granted to the Administrative Agent pursuant
to the Mortgage).

ARTICLE 6 - CONDITIONS PRECEDENT.

      Precedent to the effectiveness of this Agreement, the establishment of the
financing arrangements contemplated hereby, the making of the first loan under
the Revolving Credit and the amendment and restatement of the Term Loan and the
funding of the Acquisition Term Loan, the documents respectively described in
Sections 6-1 through and including 6-11 each in form and substance satisfactory
to the Administrative Agent shall have been delivered to the

                                      -41-
<PAGE>

Administrative Agent, and the conditions respectively described in Sections 6-13
through and including 6-17, shall have been satisfied:

      6-1. Corporate Due Diligence.

            (a) Certificates of corporate good standing issued by the respective
Secretary of State of the Borrowers' state of organization.

            (b) A Certificate of each Borrower's Assistant Clerk of the due
adoption, continued effectiveness, and setting forth the texts of, each
corporate resolution adopted in connection with the establishment of the loan
arrangement contemplated by the Loan Documents and attesting to the true
signatures of each Person authorized as a signatory to any of the Loan
Documents.

      6-2. Opinion. An opinion of counsel to the Borrowers in form and substance
satisfactory to the Administrative Agent.

      6-3. Officers' Certificates. A Certificate executed by the President and
the Treasurer of each Borrower and stating that, among other things, the
representations and warranties made by such Borrower to the Administrative Agent
and the Lenders in the Loan Documents are true and complete as of the date of
such Certificate, that no event has occurred which is or which, solely with the
giving of notice or passage of time (or both) would be an Event of Default, and
that certain provisions of this Agreement concerning the waiver of jury trial,
the designation of and submission to the exclusive jurisdiction and venue of
certain courts, and other various waivers and indemnifications have brought to
such Borrower's attention.

      6-4. Guaranties. The Administrative Agent shall have received unlimited
guaranties in form and substance acceptable to the Administrative Agent wherein
each Borrower shall unconditionally guaranty all Liabilities of the other
Borrowers to the Administrative Agent and each Lender.

      6-5. Collateral Interests. The Administrative Agent shall have received
all documents and instruments, including Uniform Commercial Code financing
statements required by law or reasonably requested by the Administrative Agent
to be filed, registered, published or recorded to create or perfect the first
priority Encumbrances in favor of the Administrative Agent intended to be
created under the Loan Documents and all such documents and instruments shall
have been so filed, registered, published or recorded to the satisfaction of the
Administrative Agent and an endorsement to the title insurance policy insuring
the Mortgage shall have been issued in form and substance reasonably
satisfactory to the Administrative Agent.

      6-6. Perfection Certificates and UCC Search Results. The Administrative
Agent shall have received from each of the Borrowers a completed and fully
executed perfection certificate and the results of UCC searches (and the
equivalent thereof in all applicable foreign jurisdictions) with respect to the
Collateral in form and substance reasonably satisfactory to the Administrative
Agent.

      6-7. Consents and Approvals. All necessary consents and approvals to the
transactions contemplated hereby shall have been obtained and shall be
reasonably satisfactory to the.

                                      -42-
<PAGE>

Administrative Agent.6-8. All Fees and Expenses Paid All fees due at or
immediately after the first funding under the Revolving Credit and all costs and
expenses incurred by the Administrative Agent in connection with the
establishment of the credit facilities contemplated hereby (including the
reasonable fees and expenses of counsel to the Administrative Agent) shall have
been paid in full.

      6-9. Lockbox. The lockbox and account control agreements required under
Section 7-3 below.

      6-10. Additional Documents. Such additional instruments and documents as
the Administrative Agent or their counsel reasonably may require or request.

      6-11. Consummation of Impact Acquisition. The Impact Acquisition shall
have been consummated to the satisfaction of the Administrative Agent and the
Lead Borrower shall have provided the Administrative Agent with copies of the
final executed Acquisition Documentation, with all schedules and exhibits
thereto.

      6-12. Evidence of Dissolution of Subsidiaries. The Lead Borrower shall
have provided the Administrative Agent with certificates from the Massachusetts
Secretary of State which shall confirm that each of the following Subsidiaries
have been dissolved: (a) Dynamics Research Investment Corporation, (b) DRC
Encoder, Inc., (c) DRC Metrigraphics, Inc., (d) DRC Software, Inc., and (e) DRC
Telecom, Inc.

      6-13. No Defaults under Applicable law or Material Agreements. The
consummation of the transactions contemplated hereby shall not (a) violate any
Requirement of Law or (b) conflict with, or result in a default or event of
default under, any material agreement of any Borrower.

      6-14. No Litigation. Except as noted on EXHIBIT 6-17, there shall not
exist any litigation or other proceedings the result of which would have a
Material Adverse Change.

      6-15. Representations and Warranties. Each of the representations made by
or on behalf of any Borrower in this Agreement or in any of the other Loan
Documents or in any other report, statement, document, or paper provided by any
or on behalf of any Borrower shall be true and complete in all material respects
as of the date as of which such representation or warranty was made.

      6-16. No Suspension Event. No Suspension Event shall then exist.

      6-17. No Adverse Change. Except as noted on EXHIBIT 6-17, no event shall
have occurred or failed to occur, which occurrence or failure had or could
reasonably be expected to have a materially adverse effect upon the Borrowers'
financial condition, operating results, or cash flows from the Borrowers'
financial condition at June 30, 2004.

ARTICLE 7 - GENERAL REPRESENTATIONS, WARRANTIES AND COVENANTS.

      To induce the Administrative Agent and the Lenders to establish the loan
arrangement contemplated herein and to make Loans and advances and to provide
financial accommodations

                                      -43-
<PAGE>

under the Revolving Credit (each of which Loans shall be deemed to have been
made in reliance thereupon), and to amend and restate the Term Loan, and to make
the Acquisition Loan, the Borrowers, in addition to all other representations,
warranties, and covenants made by the Borrowers in any other Loan Document, make
those representations, warranties, and covenants included in this Agreement.

      7-1. Payment and Performance of Liabilities. The Borrowers shall pay each
Liability when due (or when demanded if payable on demand) and shall promptly,
punctually, and faithfully perform each other Liability.

      7-2. Due Organization - Corporate Authorization - No Conflicts.

            (a) Each Borrower presently is and shall hereafter remain in good
standing as a corporation, or limited liability company, as the case may be, in
the State referenced in the Preamble hereto and is and shall hereafter remain
duly qualified and in good standing in every other State in which, by reason of
the nature or location of such Borrower's assets or operation of such Borrower's
business, such qualification may be necessary, except for such States in which
failure to be so qualified and in good standing would not result in a Material
Adverse Change.

            (b) Each Subsidiary is listed on EXHIBIT 7-2, annexed hereto. Each
Subsidiary is and shall hereafter remain in good standing in the State in which
incorporated and is and shall hereafter remain duly qualified in each other
State in which, by reason of that entity's assets or the operation of such
entity's business, such qualification may be necessary, except for such States
in which failure to be so qualified and in good standing would not result in a
Material Adverse Change. The Borrowers shall provide the Administrative Agent
with prior written notice of any entity's becoming or ceasing to be a
Subsidiary.

            (c) Each Borrower has all requisite corporate power and authority to
execute and deliver to the Administrative Agent all and singular the Loan
Documents to which such Borrower is a party and has and will hereafter retain
all requisite corporate power to perform all and singular the Liabilities.

            (d) The execution and delivery by each Borrower of each Loan
Document to which it is a party; each Borrower's consummation of the
transactions contemplated by such Loan Documents (including, without limitation,
the creation of security and mortgage interests by such Borrower as contemplated
hereby) ; and each Borrower's performance under those of the Loan Documents to
which it is a party; the borrowings hereunder; and the use of the proceeds
thereof:

                  (i) Have been duly authorized by all necessary corporate
      action.

                  (ii) Do not, and will not, contravene in any material respect
      any provision of any Requirement of Law or obligation of such Borrower.

                  (iii) Will not result in the creation or imposition of, or the
      obligation to create or impose, any Encumbrance upon any assets of any
      Borrower pursuant to any Requirement of Law or obligation, except pursuant
      to the Loan Documents.

                                      -44-
<PAGE>

            (e) The Loan Documents have been duly executed and delivered by each
Borrower party thereto and are the legal, valid and binding obligations of each
Borrower party thereto, enforceable against each Borrower party thereto in
accordance with their respective terms.

      7-3. Maintain Accounts. To permit the Administrative Agent to monitor the
Borrowers' financial performance and condition, each Borrower shall maintain all
of such Borrower's depository accounts with any of the Lenders or other
depository institutions disclosed to, and reasonably acceptable to the
Administrative Agent, with all significant deposits to be maintained with any
Lender; provided, however, for a period of six (6) months commencing on the date
hereof, the foregoing requirement shall not apply to those existing depository
accounts of Impact which during such period, the Borrowers will, in good faith,
work diligently to transfer to any of the Lenders (or another depository
institutions disclosed to, and reasonably acceptable to the Administrative
Agent); provided further, however, the aggregate outstanding principal balance
of any such existing depository accounts shall not exceed $500,000.00, at any
time. Upon the occurrence of an Event of Default which continues uncured or
waived, all third party depository accounts shall be transferred to, maintained
with, and controlled by the Administrative Agent. Any amounts not deposited
directly with the Lenders and received by any third party institution during any
transition shall be transferred on a daily basis to an account established and
controlled by the Administrative Agent.

      7-4. Trade Names.

            (a) The conduct by any Borrower of such Borrower's business does not
infringe on the patents, industrial designs, trademarks, trade names, trade
styles, brand names, service marks, logos, copyrights, trade secrets, know-how,
confidential information, or other intellectual or proprietary property of any
third Person, that could result in a Material Adverse Change.

            (b) Each Borrower owns and possesses, or has the right to use all
patents, industrial designs, trademarks, trade names, trade styles, brand names,
service marks, logos, copyrights, trade secrets, know-how, confidential
information, and other intellectual or proprietary property of any third Person
necessary for such Borrower's conduct of its business.

      7-5. Locations. The Collateral, and the books, records, and papers of the
Borrowers pertaining thereto, are kept and maintained solely at the chief
executive offices of the Borrowers stated in the Preamble of this Agreement, and
at those locations which are listed on EXHIBIT 7-5, annexed hereto, which
EXHIBIT includes all service bureaus with which any such records are maintained
and the names and addresses of each of the Borrower's landlords. So long the
Collateral Release Event has not occurred, the Borrowers shall not remove any of
the books, records, and papers of the Borrowers pertaining to the Collateral
from said chief executive offices or those locations listed on EXHIBIT 7-5.

      7-6. Title to Collateral. Each Borrower is, and shall hereafter remain,
the owner of all of its present and future assets free and clear of all
Encumbrances, other than the following ("PERMITTED LIENS"):

                                      -45-
<PAGE>

            (a) the mortgages and security interests (including Capital Leases)
      referred to in EXHIBIT 7-6 attached hereto, or any renewal, extension or
      refunding of any such mortgage or security interest in an amount not
      exceeding the amount thereof remaining unpaid immediately prior to such
      renewal, extension or refunding;

            (b) liens for taxes and other amounts not yet delinquent or being
      contested in good faith as provided in Section 7-13; liens in connection
      with workmen's compensation, unemployment insurance or other social
      security obligations; liens securing the performance of bids or
      performance bonds, tenders, contracts, leases, statutory obligations,
      surety and appeal bonds, liens to secure progress or partial payments and
      other liens of like nature arising in the ordinary course of business;
      mechanics', workmen's, materialmen's, carrier's, warehousemen's, or other
      like liens arising in the ordinary course of business in respect of
      obligations which are not yet due or which are being contested in good
      faith; and other liens or encumbrances incidental to the conduct of the
      business of any Borrower or any Subsidiary or to the ownership of their
      respective properties or assets, which were not incurred in connection
      with the borrowing of money or the obtaining of credit and which do not,
      individually or in the aggregate, materially detract from the value of the
      properties or assets of the Borrowers and their Subsidiaries or materially
      affect the use thereof in the operation of their business;

            (c) Encumbrances in the nature of (i) zoning restrictions, (ii)
      easements, (iii) restrictions of record on the use of real property, (iv)
      landlords' and lessors' encumbrances on rented premises and (v)
      restrictions on transfers or assignments of leases, which in each case do
      not, individually or in the aggregate, materially detract from the value
      of the encumbered property or impair the use thereof in the business of
      any Borrower or any Subsidiary;

            (d) Liens in respect of judgments or awards, to the extent that such
      judgments or awards are permitted by Section 7-7(j);

            (e) Restrictions under federal and state securities laws on the
      transfer of securities;

            (f) Restrictions under foreign trade regulations, other governmental
      rules and regulations, and subcontracts on the transfer or licensing of
      certain assets of the Borrowers and their Subsidiaries;

            (g) Liens and security interests granted to third parties in
      connection with purchase money security interest or leases to secure
      amounts not to exceed $1,500,000 in the aggregate at any time outstanding;
      and

            (h) Liens and security interests granted to the Administrative Agent
      and the Lenders under the Loan Documents.

      7-7. Indebtedness. The Borrowers do not and shall not hereafter have any
Indebtedness with the exceptions of:

                                      -46-
<PAGE>

            (a) Indebtedness to the Administrative Agent and the Lenders under
      this Agreement and the other Loan Documents;

            (b) Indebtedness existing as of the Closing Date of any wholly-owned
      Subsidiary to a Borrower or any other wholly-owned Subsidiary and of a
      Borrower to any wholly-owned Subsidiary; provided, however, that (i) all
      moneys due from a Borrower to any Subsidiary which is not a Borrower will
      be expressly constituted as a Subordinated Debt and (ii) no Borrower shall
      repay any such moneys due to any Subsidiary at any time unless no Event of
      Default exists and no event which, with the giving of notice or lapse of
      time or both, would constitute an Event of Default exists or will exist
      after such repayment;

            (c) Current liabilities of a Borrower or any Subsidiary (other than
      for borrowed money) incurred in the ordinary course of its business and in
      accordance with customary trade practices;

            (d) Existing Indebtedness of a Borrower or any Subsidiary referred
      to in EXHIBIT 7-7 attached hereto, and renewals and extensions thereof,
      provided that (i) the aggregate principal amount of such Indebtedness is
      not at any time increased, (ii) no material terms applicable to such
      Indebtedness shall be more favorable to the renewal or extension lenders
      than the terms that are applicable to the holders of such Indebtedness on
      the date hereof and (iii) the interest rate applicable to such
      Indebtedness shall be a market interest rate as of the time of such
      renewal or extension;

            (e) Indebtedness of a Borrower or any Subsidiary secured by
      Permitted Liens;

            (f) Indebtedness of a Borrower or any Subsidiary in respect of
      guarantees to the extent the underlying Indebtedness is permitted by this
      Section 7-7; and

            (g) Subordinated Debt;

            (h) Unfunded pension and benefit liabilities so long as each
      Borrower is in compliance with Section 7-15, provided that the Lead
      Borrower's excess of the present value of accrued pension benefits over
      the value of plan assets shall not exceed $10,000,000 as determined under
      the plan's assumptions for funding purposes.

            (i) To the extent payment thereof shall not at the time be required
      by Section 7-13, Indebtedness in respect of taxes, assessments,
      governmental charges and claims for labor, material and supplies;

            (j) Indebtedness in respect of judgments or awards (i) which have
      been in force for less than the applicable appeal period or (ii) in
      respect to which any Borrower or any Subsidiary shall at the time in good
      faith be prosecuting an appeal or proceedings for review, and in each case
      such Borrower or such Subsidiary shall have taken appropriate reserves
      therefor in accordance with GAAP;

            (k) Indebtedness in respect of deferred taxes arising in the
      ordinary course of business; and

                                      -47-
<PAGE>

            (l) Any other unsecured Indebtedness in an amount not to exceed $
      1,000,000, in the aggregate at any time outstanding.

      7-8. Insurance Policies.

            (a) EXHIBIT 7-8, annexed hereto, is a schedule of all insurance
policies owned by any Borrower or under which any Borrower is the named insured.
Each of such policies is in full force and effect. Neither any Borrower nor, to
the knowledge of the Borrowers, the issuer of any such policy is in default or
violation of any such policy.

            (b) Each Borrower will maintain or cause to be maintained on all
insurable properties now or hereafter owned by such Borrower or any Subsidiary
insurance against loss or damage by fire or other casualty to the extent
customary with respect to like properties of companies conducting similar
businesses and will maintain or cause to be maintained public liability and
workmen's compensation insurance insuring such Borrower and its Subsidiaries to
the extent customary with respect to companies conducting similar businesses
and, upon request, will furnish to the Administrative Agent satisfactory
evidence of the same. In the event of the failure by any Borrower to maintain
insurance as required herein, the Administrative Agent, at its option, may
obtain such insurance at the cost and expense of the Borrowers. Each Borrower
shall furnish to the Administrative Agent certificates or other evidence
reasonably satisfactory to the Administrative Agent regarding compliance by such
Borrower with the foregoing insurance provisions.

            (c) All insurance carried by any Borrower shall name the
Administrative Agent as additional insured and as additional loss payee and
shall provide for a minimum of thirty (30) days' written notice of cancellation
to the Administrative Agent. Upon the occurrence of the Collateral Release
Event, this clause (c) of Section 7-8 shall immediately and automatically
terminate and shall have no further force or effect with respect to the
Collateral, except for the Collateral granted to the Administrative Agent for
the benefit of the Lenders pursuant to the Mortgage.

            (d) Each Borrower shall advise the Administrative Agent of each
material claim made by such Borrower under any policy of insurance which covers
the Collateral (except for claims with respect to the Collateral granted to the
Administrative Agent for the benefit of the Lenders pursuant to the Mortgage,
which claims are governed by Section 4-2 of the Mortgage) and will permit the
Administrative Agent, at the Administrative Agent's option in each instance, to
the exclusion of such Borrower, to conduct the adjustment of each such claim
while any Event of Default is then in existence, and so long as the Collateral
Release Event has not occurred.

            (e) Each Borrower hereby appoints the Administrative Agent as such
Borrower's attorney in fact, exercisable (x) so long as the Collateral Release
Event has not occurred, and (y) after the occurrence of an Event of Default, to
obtain, adjust, settle, and cancel any insurance described in this section and
to endorse in favor of the Administrative Agent any and all drafts and other
instruments with respect to such insurance, in each case during the continuance
of any Event of Default. Such appointment, being coupled with an interest, is
irrevocable until this Agreement is terminated by a written instrument executed
by a duly authorized officer of the Administrative Agent. The Administrative
Agent shall not be liable on

                                      -48-
<PAGE>

account of any exercise pursuant to said power except for any exercise in actual
willful misconduct, gross negligence or bad faith. The Administrative Agent may
apply any proceeds of such insurance against the Liabilities, whether or not
such have matured, in such order of application as the Administrative Agent may
determine. Upon the occurrence of the Collateral Release Event, this clause (e)
of Section 7-8 shall immediately and automatically terminate and shall have no
further force or effect with respect to the Collateral, except for the
Collateral granted to the Administrative Agent for the benefit of the Lenders
pursuant to the Mortgage.

      7-9. Licenses. EXHIBIT 7-9, annexed hereto, is a schedule of all material
license, distributor, franchise, and similar agreements issued to, or to which
any Borrower is a party. Each of such agreements is in full force and effect.
Neither any Borrower nor, to the knowledge of the Borrowers, any other party to
any such agreement is in material default or violation of any such agreement and
no Borrower has received any notice or threat of cancellation of any such
agreement.

      7-10. Leases. EXHIBIT 7-10, annexed hereto, is a schedule of all presently
effective Leases and Capital Leases having an outstanding amount due in excess
of $100,000. Each of such Leases and Capital Leases is in full force and effect.
Neither any Borrower nor, to the knowledge of the Borrowers, any other party to
any such Lease or Capital Lease is in material default or violation of any such
Lease or Capital Lease and no Borrower has received any notice or threat of
cancellation of any such Lease or Capital Lease. Each Borrower hereby authorizes
the Administrative Agent at any time and from time to time after the occurrence
and during the continuance of any Event of Default to contact any of the
Borrowers' landlords in order to confirm each Borrower's continued compliance
with the terms and conditions of any Lease between such Borrower and that
landlord and to discuss such issues, concerning such Borrower's occupancy under
such Lease, as the Administrative Agent may determine. Borrower further
represents that the aggregate amount due under all other present Leases and
Capital Leases not set forth in EXHIBIT 7-10 does not exceed $500,000.

      7-11. Requirements of Law. Except as set forth on EXHIBIT 7-11, each
Borrower is in material compliance with, and shall hereafter comply with and use
its assets in material compliance with, all Requirements of Law. No Borrower has
received any notice of any material violation of any Requirement of Law which
material violation has not been cured or otherwise remedied.

      7-12. Maintain Properties. Each Borrower shall:

            (a) Keep the Collateral in good order and repair (ordinary
      reasonable wear and tear and insured casualty excepted).

            (b) Not suffer or cause the waste or destruction of any material
      part of the Collateral.

            (c) Not use any of the Collateral in violation of any policy of
      insurance thereon.

            (d) Not sell, lease, or otherwise dispose of any of the Collateral,
      other than as set forth in Section 7-22.

                                      -49-
<PAGE>

      7-13. Pay Taxes.

            (a) Except as set forth in EXHIBIT 7-13, to the best of the
Borrower's knowledge, there are no examinations of or with respect to any
Borrower presently being conducted by the Internal Revenue Service or any state
taxing authority.

            (b) Except as set forth in EXHIBIT 7-13 and except as would not be
material, each Borrower has, and hereafter shall: pay, as they become due and
payable, all taxes and unemployment contributions and other charges of any kind
or nature levied, assessed or claimed against such Borrower or the Collateral by
any Person whose claim could result in an Encumbrance upon any asset of such
Borrower or by any governmental authority; properly exercise any trust
responsibilities imposed upon such Borrower by reason of withholding from
employees' pay; timely make all contributions and other payments as may be
required pursuant to any Employee Benefit Plan now or hereafter established by
such Borrower; and timely file all tax and other returns and other reports with
each governmental authority to whom each Borrower is obligated to so file,
provided that neither any Borrower nor any Subsidiary shall be required to pay
any such tax, assessment, charge, levy or claim if the amount, applicability or
validity thereof shall currently be contested in good faith by appropriate
proceedings promptly initiated and diligently conducted and if such Borrower or
such Subsidiary, as the case may be, shall have set aside on its books such
reserves, if any, with respect thereto as are required by GAAP and deemed
appropriate by such Borrower and its independent public accountants.

            (c) Except as set forth in EXHIBIT 7-13, subject to the Borrowers'
rights under subsection (b) above, in the event of the failure by any Borrower
to comply with subsection (b) above, the Administrative Agent, at its option,
may, but shall not be obligated to, pay any taxes, unemployment contributions,
and any and all other charges levied or assessed upon such Borrower or the
Collateral by any Person or governmental authority, and make any contributions
or other payments on account of any Borrower's Employee Benefit Plan as the
Administrative Agent, in the Administrative Agent's reasonable discretion, may
deem necessary or desirable, to protect, maintain, preserve, collect, or realize
upon any or all of the Collateral or the value thereof or any right or remedy
pertaining thereto, provided, however, the Administrative Agent's making of any
such payment shall not constitute a cure or waiver of any Event of Default
occasioned by such Borrower's failure to have made such payment..

      7-14. No Margin Stock. No Borrower is engaged in the business of extending
credit for the purpose of purchasing or carrying any margin stock (within the
meaning of Regulations U. and X. of the Board of Governors of the Federal
Reserve System of the United States). No part of the proceeds of any borrowing
from any Lender will be used at any time to purchase or carry any such margin
stock or to extend credit to others for the purpose of purchasing or carrying
any such margin stock.

      7-15. ERISA. Neither any Borrower nor any ERISA Affiliate shall:

            (a) Materially violate or fail to be in material compliance with the
      terms of any Borrower's Employee Benefit Plan.

                                      -50-
<PAGE>

            (b) Fail timely to file all material reports and filings required by
      ERISA to be filed by any Borrower that may result in material liability to
      any Borrower.

            (c) Engage in any non-exempt "prohibited transactions" or any
      "reportable events" for which reportable events notice to the Pension
      Benefit Guaranty Corporation is not waived pursuant to regulations
      (respectively as described in ERISA).

            (d) Engage in, or commit, any act such that a material tax or
      penalty could be imposed upon any Borrower on account thereof pursuant to
      ERISA.

            (e) Accumulate any material funding deficiency within the meaning of
      ERISA, except to the extent permitted by Section 7-7(h).

            (f) Terminate any Employee Benefit Plan such that a lien in any
      material amount could be asserted against any material assets of any
      Borrower on account thereof pursuant to ERISA

            (g) Be a member of, contribute to, or have any material obligation
      under any Employee Benefit Plan which is a multiemployer plan within the
      meaning of Section 4001(a) of ERISA that subjects it to a material
      potential withdrawal liability under Title IV of ERISA.

      7-16. Hazardous Materials.

            (a) Except as set forth on EXHIBIT 7-16, no Borrower has: (i) been
legally responsible for any release or threat of release of any Hazardous
Material or (ii) received notification of any release or threat of release of
any Hazardous Material from any site or vessel occupied or operated by any
Borrower and/or of the incurrence of any expense or loss in connection with the
assessment, containment, or removal of any release or threat of release of any
Hazardous Material from any such site or vessel.

            (b) Each Borrower shall: (i) dispose of any Hazardous Material only
in compliance with all Environmental Laws and (ii) not store on any site or
vessel occupied or operated by any Borrower and not transport or arrange for the
transport of any Hazardous Material, except if such storage or transport is in
the ordinary course of any Borrower's business and is in compliance with all
Environmental Laws.

            (c) Each Borrower shall provide the Administrative Agent with
written notice upon such Borrower's obtaining knowledge of any incurrence of any
expense or loss by any governmental authority or other Person in connection with
the assessment, containment, or removal of any Hazardous Material, for which
expense or loss any Borrower may be liable.

      7-17. Litigation. Except as set forth on EXHIBIT 7-17, there is not
presently pending or threatened by or against any Borrower any suit, action,
proceeding, or investigation which, if determined adversely to such Borrower,
would result in a Material Adverse Change upon the Borrowers' financial
condition, taken as a whole, or ability to conduct their business as such
business is presently conducted or is contemplated to be conducted in the
foreseeable future.

                                      -51-
<PAGE>

      7-18. Dividends, etc. None of the Borrowers will pay any cash dividend or
make any other distribution other than stock dividends in respect of any class
of such Borrower's capital stock, except for distributions by any Borrower to
the Lead Borrower and, provided no Event of Default is then existing and would
not exist after giving effect to any contemplated redemption, the periodic
redemption of stock consistent with past practices and in no event to exceed the
lesser of (i) 25% of the Borrowers' Consolidated trailing four quarter EBITDA in
any fiscal year, or (ii) the difference between Consolidated Operating Cash Flow
and Total Debt Service in any fiscal year.

      7-19. Guarantees and Investments. None of the Borrowers will, nor will any
Borrower permit any Subsidiary to, make or permit to remain outstanding any loan
or advance to, or guarantee or endorse (except as a result of endorsing
negotiable instruments for deposit or collection in the ordinary course of
business) or otherwise assume or remain liable with respect to any obligation
of, or make or own any investment in, or acquire (except in the ordinary course
of business) the properties or assets of, any Person, except:

            (a) Extensions of credit by a Borrower or any Subsidiary in the
      ordinary course of business in accordance with customary trade practices
      (including the acceptance of promissory notes in respect of delinquent
      Accounts);

            (b) The presently outstanding Investments, loans and advances, if
      any, and the presently existing guarantees, if any, of any Borrower and
      its Subsidiaries all to the extent set forth on EXHIBIT 7-19 attached
      hereto; provided however, notwithstanding any provision contained in this
      Agreement to the contrary, it is hereby agreed that the Lead Borrower may,
      at any time, transfer, assign or otherwise contribute to its 401(k) profit
      sharing plan any or all of the Telica/Lucent Shares (as defined in EXHIBIT
      7-19);

            (c) Direct obligations of the United States of America or any
      department or agency thereof maturing not more than one year from the date
      of acquisition thereof;

            (d) Certificates of deposit, repurchase agreements, time deposits
      (including sweep accounts), demand deposits, bankers' acceptances, money
      market deposits or other similar types of Investments maturing not more
      than one year from the date of acquisition thereof and evidencing direct
      obligations of any Lender or any lender within the United States of
      America having capital surplus and undivided profits in excess of
      $50,000,000;

            (e) Investments in commercial paper maturing within ninety (90) days
      from the date of acquisition thereof and having, at such date of
      acquisition, rated at least P-1 by Moody's or A-1 by S&P, or carrying an
      equivalent rating by a nationally recognized rating agency ;

            (f) Any mutual fund or other pooled investment vehicle which invests
      principally in obligations described in subparagraphs (c), (d) or (e)
      above and having, at the date of investment in such fund or vehicle, one
      of the two highest credit ratings from Moody's or S&P;

                                      -52-
<PAGE>

            (g) Equity investments by any Borrower's wholly-owned Subsidiaries
      in any other wholly-owned Subsidiary and of a Borrower in any of its
      wholly-owned Subsidiaries;

            (h) Guaranties by a Borrower of the other Borrowers' Indebtedness
      pursuant to the Revolving Credit Loans, the Term Loan and the Acquisition
      Term Loan;

            (i) Guarantees by a Borrower of Indebtedness and other obligations
      incurred by Subsidiaries to the extent permitted by Section 7-7;

            (j) Capital Expenditures to the extent permitted by Section 7-29;

            (k) Guarantees by any Borrower of any of the other Liabilities;

            (l) Any new Capital Leases permitted under Section 7-20;

            (m) Mergers or consolidations permitted under Section 7-21:

            (n) Any Investment relating to any deferred portion of the purchase
      price in connection with a permitted sale;

            (o) Permitted Acquisitions; and

            (p) Any other Investments or Guarantees in an amount not to exceed
      $2,000,000 in the aggregate outstanding at any time,

            provided, however, if after giving effect to any of the foregoing,
      any Borrower or any Subsidiary of any Borrower shall create a Subsidiary,
      and at such time, the Borrowers shall not have yet satisfied the
      provisions of Section 5-3, the Lead Borrower shall cause such Subsidiary
      to execute and deliver to the Administrative Agent and the Lenders such
      documentation as such Persons may reasonably require to (x) either (i)
      join this Agreement as a "Borrower", or (ii) execute a guaranty of the
      Liabilities, (y) amend the Security Agreement to add such Subsidiary as a
      party thereto, and (z) to otherwise effectuate the intentions of this
      Agreement and the other Loan Documents.

      7-20. New Leases. None of the Borrowers will, nor will any Borrower permit
any Subsidiary to, enter into any Capital Lease, except as permitted below or as
otherwise permitted under Sections 7-7 and 7-10. From and after the Closing
Date, none of the Borrowers will, and none of the Borrowers will permit any
Subsidiary to, enter into any new lease during any fiscal year (including any
new Capital Leases, but excluding renewals of any existing leases) as lessee if,
immediately after giving effect thereto, the aggregate rental obligations
(excluding payments required to be made by the lessee in respect of taxes and
insurance whether or not denominated as rent, and excluding payments incurred in
connection with a renewal of any existing lease) of all of the Borrowers and
their respective Subsidiaries under all such leases entered into during such
fiscal year after the Closing Date shall exceed $2,000,000 in the aggregate in
such fiscal year; provided, however, that to the extent rental obligations under
any lease are reimbursable by such Borrower's customer pursuant to a binding
contract between such Borrower and such customer, such rental obligations shall
be excluded from the foregoing provision of this sentence.

                                      -53-
<PAGE>

Upon the reasonable request of the Administrative Agent, the Lead Borrower will
obtain a landlord's waiver reasonably acceptable to the Administrative Agent on
any existing or new leased location occupied by any Borrower.

      7-21. Mergers and Consolidations. None of the Borrowers will, nor will any
Borrower permit any Subsidiary to, enter into any merger or consolidation,
except the following:

            (a) Any wholly-owned Subsidiary of a Borrower may merge or be
      liquidated into a Borrower or any other wholly-owned Subsidiary of a
      Borrower so long as after giving effect to any such merger to which a
      Borrower is a party such Borrower shall be the surviving or resulting
      Person;

            (b) Mergers constituting Investments permitted by Section 7-19(g) so
      long as after giving effect to any such merger to which a Borrower is a
      party such Borrower shall be the surviving or resulting Person; and

            (c) Permitted Acquisitions.

      7-22. Sale of Collateral. Except as expressly permitted under Section
7-21, none of the Borrowers will, nor will any Borrower permit any Subsidiary
to, sell, lease or otherwise dispose of all or any substantial part of its
properties or assets, except the following, each of which may be effected with
the prior written consent of the Required Lenders, such consent not to be
unreasonably withheld:

            (a) Each Borrower and its Subsidiaries may sell or otherwise dispose
assets that are no longer used or useful in the business of the applicable
Borrower or Subsidiary, for fair market value that, when aggregated with all
other sales and dispositions pursuant to this clause, is in exchange for up to
$2,000,000 of gross sales proceeds received by a Borrower, provided, however,
that no Borrower shall dispose of any portion of its books and records,
regardless of whether a particular asset of property constitutes Collateral,
without the prior consent of the Required Lenders; provided further, however,
that immediately before and after giving effect to any such disposition, no
Event of Default exists. The Required Lenders' consent shall be requested no
less than ten (10) days prior to the scheduled closing date of a proposed sale.
The Net Proceeds of any sale shall be applied to the Liabilities as follows:

                        (A) First, to the outstanding principal balance of the
                  Revolving Credit Loans;

                        (B) Second, to the outstanding principal balance of the
                  Acquisition Term Loan, in inverse order of maturity until the
                  Acquisition Term Loan is paid in full;

                        (C) Third, to the outstanding principal balance of the
                  Term Loan, in inverse order of maturity until the Term Loan is
                  paid in full.

            Application of the Net Proceeds to the Liabilities shall not
postpone or relieve the Borrowers of their obligations to make the scheduled
principal payments required by Section 4-4(a), above.

                                      -54-
<PAGE>

            (b) The Lead Borrower may sell, lease or otherwise transfer any of
its properties or assets to any other Borrower, provided that (i) the Borrowers
provide a notice thereof to the Administrative Agent prior to each such transfer
(which notice shall include a description and a good faith estimate of the fair
market value of the property or assets being so transferred and, to the extent
applicable, the revenues that were generated by such property or assets in the
immediately preceding fiscal year of the Lead Borrower), and (ii) immediately
before and after giving effect thereto no Event of Default exists; and

            (c) Each Borrower and its Subsidiaries may license products and
intangible assets for fair market value in the ordinary course of business.

      7-23. Protection of Collateral. Upon the occurrence and during the
continuance of any Event of Default after notice to the Lead Borrower, the
Administrative Agent, at the Administrative Agent's discretion, and from time to
time, may discharge any tax or Encumbrance on any of the Collateral, or take any
other action that the Administrative Agent may deem necessary or desirable to
repair, insure, maintain, preserve, collect, or realize upon any of the
Collateral. The Administrative Agent shall not have any obligation to undertake
any of the foregoing and shall have no liability on account of any action so
undertaken except where there is a specific finding in a judicial proceeding (in
which the Administrative Agent has had an opportunity to be heard), from which
finding no further appeal is available, that Administrative Agent had acted in
actual bad faith or in a grossly negligent manner. Each Borrower shall pay to
the Administrative Agent, on demand, or the Administrative Agent, in its
discretion, may add to the Loan Account, all amounts paid or incurred by the
Administrative Agent pursuant to this section. The obligation of the Borrowers
to pay such amounts is a Liability.

      7-24. Line of Business. The Borrowers shall not engage in any business
other than the business in which they are currently engaged or a business
reasonably related thereto.

      7-25. Affiliate Transactions. Except as expressly permitted under Section
7-21, the Borrowers shall not make any payment, nor give any value to any
Related Entity except for goods and services actually purchased by a Borrower
from, or sold by a Borrower to, such Related Entity for a price which shall

            (a) be competitive and fully deductible as an "ordinary and
      necessary business expense" and/or fully depreciable under the Internal
      Revenue Code of 1986 and the Treasury Regulations, each as amended; and

            (b) not differ from that which would have been charged in an arms
      length transaction.

      7-26. Additional Assurances. Each Borrower shall execute and deliver to
the Administrative Agent such instruments, documents, and papers, and shall do
all such things from time to time hereafter as the Administrative Agent may
request to carry into effect the provisions and intent of this Agreement; and to
comply with all applicable statutes and laws. So long as no Collateral Release
Event has occurred, each Borrower shall execute all such instruments as may be
required by the Administrative Agent with respect to the recordation and/or
perfection of the security interests created herein. A carbon, photographic, or
other reproduction of this

                                      -55-
<PAGE>

Agreement or of any financing statement or other instrument executed pursuant to
this Section shall be sufficient for filing to perfect the security interests
granted herein.

      7-27. Adequacy of Disclosure.

            (a) All annual and quarterly financial statements of the Borrowers
furnished to the Lenders by the Borrowers for any period ending on or after
December 31, 2003 have been prepared in accordance with GAAP consistently
applied and present fairly the condition of the Borrowers at the date(s) thereof
and the results of operations and cash flows for the period(s) covered, except
that quarterly financial statements remain subject to year-end adjustments and
the addition of notes. There has been no change in the financial condition,
results of operations, or cash flows of the Borrowers since the date(s) of such
financial statements, other than changes in the ordinary course of business,
which changes have not been materially adverse, either singularly or in the
aggregate.

            (b) The Borrowers do not have any contingent obligations or
obligation under any Lease or Capital Lease which is not noted in the Borrowers'
financial statements furnished to the Lenders or has been otherwise disclosed in
writing to the Lenders prior to the execution of this Agreement.

            (c) To the best of each Borrower's knowledge, no document,
instrument, agreement, or paper (exclusive of projections delivered to the
Lenders by the Borrowers in good faith) now or hereafter given the Lenders by or
on behalf of the Borrowers or any guarantor of the Liabilities in connection
with the Lenders' execution of this Agreement contains or will contain any
untrue statement of a material fact or omits or will omit to state a material
fact necessary in order to make the statements therein not misleading. Except as
set forth on EXHIBIT 6-17, there is no fact known to any Borrower which has
resulted in, or which, in the foreseeable future could result in, a Material
Adverse Change on the financial condition of any Borrower or any such guarantor
which has not been disclosed in writing to the Lenders.

      7-28. Government Contracts. Each Government Contract is valid, binding and
in full force and effect, and, other than as set forth on EXHIBITS 6-17 OR 7-28,
there is no event which has occurred or exists, which constitutes or which with
notice, the happening of any event and/or the passage of time, would constitute,
a default or breach under any Government Contract or would cause the
acceleration of any obligation of any party thereto or give rise to any right of
termination or cancellation thereof. Except as set forth on EXHIBITS 6-17 OR
7-28, the Borrowers have no reason to believe that the parties to the Government
Contracts will not fulfill their obligations thereunder in all material
respects.

      7-29. Capital Expenditures. None of the Borrowers will, nor will any
Borrower permit any Subsidiary to, make any Capital Expenditures during any
fiscal year of the Lead Borrower unless the aggregate amount of all Capital
Expenditures committed to be made by all Borrowers and their respective
Subsidiaries in such fiscal year does not exceed $7,000,000 in fiscal year 2004,
$6,000,000 in fiscal years 2005 and 2006, or $6,500,000 in any fiscal year
thereafter.

                                      -56-
<PAGE>

      7-30. Other Covenants. No Borrower shall indirectly do or cause to be done
any act which, if done directly by such Borrower, would breach any covenant
contained in this Agreement.

ARTICLE 8 - INTENTIONALLY OMITTED.

ARTICLE 9 - AMENDED AND RESTATED LOAN AGREEMENT.

      This Agreement amends and restates in its entirety that certain Amended
and Restated Loan Agreement dated as of June 28, 2002, by and among certain of
the Borrowers, the Administrative Agent and others named therein, which in turn
amended and restated that certain Loan and Security Agreement dated as of
February 10, 2000 by and among certain of the Borrowers, the Administrative
Agent and others named therein (collectively, the "EXISTING LOAN AGREEMENT"). On
the Closing Date, the rights and obligations of the parties under the Existing
Loan Agreement shall be subsumed within and be governed by this Agreement;
provided, however, that each of the "Revolving Credit Loans" (as such term is
defined in the Existing Loan Agreement) outstanding under the Existing Loan
Agreement on the Closing Date shall, for purposes of this Agreement, be included
as Revolving Credit Loans hereunder and each of the "L/Cs" (as defined in the
Existing Loan Agreement) outstanding under the Existing Loan Agreement on the
Closing Date shall be L/Cs hereunder.

ARTICLE 10 - AGENTS AS BORROWER'S ATTORNEY-IN-FACT.

      10-1. Appointment as Attorney-In-Fact. Upon the occurrence and during the
continuance of any Event of Default (or after the occurrence of a Assignment of
Claims Compliance Event for the purposes of subsection (d), below), and so long
as no Collateral Release Event has occurred, each Borrower hereby irrevocably
constitutes and appoints the Administrative Agent as each Borrower's true and
lawful attorney, with full power of substitution. The rights and powers granted
the Administrative Agent by the within appointment include but are not limited
to the right and power to:

            (a) Sign change of address forms to change the address to which each
      Borrower's mail is to be sent to such address as the Administrative Agent
      shall designate; receive and open each Borrower's mail;

            (b) Endorse the name of any Borrower in favor of the Administrative
      Agent upon any and all checks, drafts, notes, acceptances, or other items
      or instruments;

            (c) Take all such action as may be necessary to obtain the payment
      of any letter of credit and/or banker's acceptance of which any Borrower
      is a beneficiary; and

            (d) After the occurrence of an Assignment of Claims Compliance
      Event, and whether or not an Event of Default shall have occurred, (i)
      take such actions as may be necessary to comply with the Assignment of
      Claims Act in order to perfect or protect the Administrative Agent's
      security interest in the Government Contracts, and (ii) exercise any
      additional rights and powers granted to Agents pursuant to the Security
      Documents.

                                      -57-
<PAGE>

      10-2. No Obligation to Act. The Administrative Agent shall not be
obligated to do any of the acts or to exercise any of the powers authorized by
Section 10-1 herein, but if Administrative Agent elects to do any such act or to
exercise any of such powers, it shall not be accountable for more than it
actually receives as a result of such exercise of power, and shall not be
responsible to any Borrower for any act or omission consistent with its rights
and powers under the Loan Documents, to act except for any act or omission to
act as to which there is a final determination made in a judicial proceeding (in
which proceeding the Administrative Agent has had an opportunity to be heard)
which determination includes a specific finding that the subject act or omission
to act had been grossly negligent or in actual bad faith.

      10-3. Collateral Release Event. Upon the occurrence of the Collateral
Release Event, this Article and the appointment of the Administrative Agent as
such Borrower's attorney in fact shall immediately and automatically terminate
and shall have no further force or effect; provided, however, nothing contained
in this Section 10-3 shall affect the Administrative Agent's rights pursuant to
Section 7-7 of the Mortgage.

ARTICLE 11 - FINANCIAL AND OTHER REPORTING REQUIREMENTS/ FINANCIAL COVENANTS.

      11-1. Maintain Records. Each Borrower shall:

            (a) Keep proper books of account, in which full, true, and accurate
      entries shall be made of all of each Borrower's transactions, all in
      accordance with GAAP applied consistently with prior periods to fairly
      reflect the financial condition of each Borrower at the close of, and its
      results of operations for, the quarterly and annual periods or reporting.

            (b) Keep accurate current records of the Collateral in accordance
      with such Borrower's normal business practices.

            (c) Retain independent certified public accountants who are
      reasonably satisfactory to the Administrative Agent and instruct such
      accountants to fully cooperate with, and be available to, the
      Administrative Agent to discuss such Borrower's financial performance,
      financial condition, operating results, controls, and such other matters,
      within the scope of the retention of such accountants, as may be raised by
      the Administrative Agent.

            (d) Not change such Borrower's fiscal year.

            (e) Not change such Borrower's taxpayer identification number.

      11-2. Access to Records.

            (a) Each Borrower shall, upon reasonable advance notice, accord the
Administrative Agent and the Administrative Agent's representatives with access
from time to time as the Administrative Agent and such representatives may
require to all properties owned by or over which any Borrower has control,
except to the extent such information is classified. The Administrative Agent,
and such representatives, shall have the right, and each Borrower will

                                      -58-
<PAGE>

permit the Administrative Agent and such representatives from time to time as
the Administrative Agent and such representatives may request, to examine,
inspect, copy, and make extracts from any and all of any Borrower's books,
records, electronically stored data, papers, and files, except to the extent
such information is classified. Each Borrower shall make the Borrowers' copying
facilities available to the Administrative Agent and such representatives for
reasonable copying of documents.

            (b) Each Borrower hereby authorizes the Administrative Agent and its
representatives to inspect, copy, duplicate, review, cause to be reduced to hard
copy, run off, draw off, and otherwise use any and all computer or
electronically stored information or data which relates to any Borrower (except
to the extent such information is classified), which information or data is in
the possession of any Borrower or any service bureau, contractor, accountant, or
other person, and directs any such service bureau, contractor, accountant, or
other person fully to cooperate with the Administrative Agent and its
representatives with respect thereto.

      11-3. Prompt Notice to Lender. The Lead Borrower shall provide the
Administrative Agent with written notice promptly upon the occurrence of any of
the following events, which written notice shall be with reasonable
particularity as to the facts and circumstances in respect of which such notice
is being given:

            (a) Any change in any of the Borrower's executive officers or
      directors.

            (b) Any material change to the terms of any material contract to
      which any Borrower is a party which could result in a Material Adverse
      Change in the business, operations, or financial status of any Borrower.

            (c) Any Material Adverse Change in the business, operations, or
      financial affairs of any Borrower.

            (d) The occurrence of any Assignment of Claims Compliance Event.

            (e) Any litigation which, if determined adversely to any Borrower,
      might result in a Material Adverse Change on the financial condition of
      any Borrower.

            (f) The distribution of any materials to the shareholders of any
      Borrower (qua such shareholders), which notice shall be accompanied by a
      copy of such filings.

      11-4. Financial Statements, Certificates and Information. Each Borrower
will furnish or cause to be furnished to each Lender:

            (a) Within one hundred twenty (120) days after the end of each
      fiscal year of the Lead Borrower, (i) the consolidated balance sheets of
      the Lead Borrower and its Subsidiaries as at the end of such year and (ii)
      the related consolidated statements of income and surplus and cash flow
      for such year, setting forth in comparative form with respect to such
      consolidated financial statements figures for the previous fiscal year,
      all in reasonable detail, together with the opinion thereon of independent
      public accountants selected by the Lead Borrower and reasonably
      satisfactory to the Lenders, which opinion

                                      -59-
<PAGE>

      shall be in form generally recognized as unqualified and shall state that
      the financial statements have been prepared in accordance with GAAP
      applied on a basis consistent with that of the preceding fiscal year
      (except for changes, if any, which shall be specified and approved in such
      opinion) and that the audit by such accountants in connection with such
      financial statements referred to above only to the extent that the same
      are required to be prepared by GAAP or by the Securities and Exchange
      Commission or by any other applicable regulatory authority;

            (b) Within forty-five (45) days after the end of each of the first
      three quarterly accounting periods in each fiscal year of the Lead
      Borrower, (i) the unaudited consolidated balance sheets of the Lead
      Borrower and its Subsidiaries as at the end of such period, (ii) the
      related unaudited consolidated statements of income and surplus and cash
      flows for such period and for the period from the beginning of the current
      fiscal year to the end of such period, all in reasonable detail and signed
      by the chief financial officer or treasurer of the Lead Borrower;

            (c) Upon furnishing any financial statement required pursuant to
      Sections 11-4(a) or 11-4(b) (and monthly upon the failure of the Borrowers
      to comply with any covenant set forth in Section 5-2 for the purpose of
      determining the occurrence of an Assignment of Claims Compliance Event), a
      compliance certificate substantially in the form of EXHIBIT 11-4C attached
      hereto, in each case (A) as of the last Business Day of the immediately
      preceding reporting period, and (B) signed by the chief financial officer
      or treasurer of the Lead Borrower;

            (d) Together with the financial statements delivered pursuant to
      subparagraph (b) above, a summary of each Borrower's backlog of
      revenue-generating government contracts as of the date of such financial
      statements;

            (e) Upon each request for a Loan in connection with a contemplated
      acquisition, a covenant compliance certificate.

            (f) Promptly, but in not event later than ten (10) days, after the
      same become publicly available, copies of all periodic and other reports,
      proxy statements and other materials filed by the Lead Borrower with the
      Securities and Exchange Commission (including all form 10Q's and 10K's),
      or any governmental authority succeeding to any of or all of the functions
      of said Commission, or with any national securities exchange, or
      distributed to is shareholders generally, as the case may be (with the
      exhibits relating thereto to be provided, at the Lead Borrower's expense,
      upon the request of the Administrative Agent);

            (g) Promptly, but in no event later than ten (10) days, upon their
      becoming available, copies of any periodic or special reports filed by any
      Borrower or any Subsidiary with any federal, state or local governmental
      agency or authority, if such reports indicate any Material Adverse Change
      in the business, operations, affairs, or condition (financial or
      otherwise) of the Borrowers and the Subsidiaries, taken as whole, or if
      copies thereof are requested by the Administrative Agent, and copies of
      any notices and communications from any federal, state or local
      governmental agency or authority

                                      -60-
<PAGE>

      which specifically relate to a Borrower or any Subsidiary, which could
      result in a Material Adverse Change;

            (h) Forthwith upon any officer of any Borrower obtaining knowledge
      of any condition or event which constitutes an Event of Default or which,
      after notice or lapse of time or both, would constitute an Event of
      Default, a certificate given by such officer specifying in reasonable
      detail the nature and period of existence thereof and what action any
      Borrower has taken or proposes to take with respect thereto;

            (i) Within forty-five (45) days of each fiscal year end of the Lead
      Borrower, annual financial projections for the next fiscal year; and

            (j) To the extent not prohibited by applicable law, such other
      information regarding the business, affairs and condition of the Borrowers
      and their respective Subsidiaries as the Administrative Agent may from
      time to time reasonably request. To the extent not prohibited by
      applicable law, each Borrower will permit the Administrative Agent or any
      Lender to inspect the books and any of the properties or assets of such
      Borrower and its Subsidiaries at such reasonable times as the
      Administrative Agent or such Lender, whichever is applicable, may from
      time to time request. All costs and expenses of the Administrative Agent
      or any such Lender in connection with or relating to any request made
      under this Section 11-4 shall, if no Event of Default has occurred and is
      continuing, be paid by the Administrative Agent or such Lender, whichever
      is applicable, making such request and, upon the occurrence and during the
      continuance of an Event of Default, be paid by the Borrowers.

      11-5. Additional Financial Information. In addition to the foregoing, the
Borrowers shall promptly, but in no event later than ten (10) days, provide the
Administrative Agent with such other and additional information (except to the
extent such information is classified) concerning the Borrowers, the Collateral,
the operation of the Borrowers' business, and the Borrowers' financial
condition, including original counterparts of financial reports and statements,
as Administrative Agent may from time to time reasonably request from any
Borrower, including, without limitation, such information with respect to the
status of the pending United States government audit of the Borrowers'
Government Contracts.

      11-6. Audits and Appraisals.

            (a) So long as no Assignment of Claims Compliance Event has occurred
and/or no Event of Default has occurred and is continuing, the Administrative
Agent may, from time to time, conduct commercial finance audits of the
Borrowers' books and records (in each event, at the Administrative Agent's
expense), such exams to be conducted not more than once during any one (1)
consecutive twelve (12) month period. After the occurrence of the Assignment of
Claims Compliance Event and/or an Event of Default which is continuing, the
Administrative Agent may, from time to time, conduct commercial finance audits
of the Borrowers' books and records (in each event, at the Borrowers' expense,
but not to exceed $5,000.00 per exam).

                                      -61-
<PAGE>

            (b) (i) The Administrative Agent, at the expense of the Borrowers,
may participate in and/or observe each physical count and/or inventory of so
much of the Collateral as consists of Inventory which is undertaken on behalf of
the Borrowers.

                  (ii) Upon the Administrative Agent's reasonable request from
      time to time, but no more frequently than annually unless an Event of
      Default is existing, the Borrowers shall permit the Administrative Agent
      to obtain appraisals of the Borrowers' assets including, without
      limitation, the Real Estate, (in all events, at the Borrowers' expense)
      conducted by such appraisers as are satisfactory to the Administrative
      Agent.

            (c) The Administrative Agent, at the expense of the Borrowers, may
order environmental assessments of the Real Estate at such times as the
Administrative Agent may reasonably determine, provided that no more than one
such assessment be conducted at Borrowers' expense in any calendar year prior to
the occurrence of an Event of Default.

      11-7. Consolidated Operating Cash Flow to Total Debt Service. The
Borrowers shall at all times maintain a ratio of Consolidated Operating Cash
Flow to Total Debt Service of greater than 1.50 to 1.00 for each fiscal quarter
end, calculated on a rolling four (4) fiscal quarter basis, commencing with the
fiscal quarter ending as of September 30, 2004.

      11-8. Consolidated Total Net Worth. The Borrowers shall not at any time
permit their Consolidated Total Net Worth to be less than that amount which is
equal to the aggregate of (i) $55,000,000.00, plus (ii) an amount equal to fifty
percent (50%) of the Borrowers' Consolidated Net Income for each fiscal quarter
on a cumulative basis with no reduction for loss, plus (iii) an amount equal to
seventy-five percent (75%) of the Net Proceeds from (a) any Equity Issuance
after the date hereof and/or (b) the incurrence by the Borrowers of any
Subordinated Debt after the date hereof, on a cumulative basis, to be tested as
of the end of each fiscal quarter of the Lead Borrower, commencing with the
fiscal quarter ending as of September 30, 2004.

      11-9. Leverage Ratio. The Borrowers will not at any time permit their
ratio of Consolidated Total Funded Indebtedness to the Borrowers' Consolidated
trailing four quarter EBITDA (tested on a pro forma basis in connection with
contemplated acquisitions) (the "Leverage Ratio") to be greater than (a) 3.50 to
1.00 from the Closing Date through and including December 30, 2004, (b) 3.00 to
1.00 from December 31, 2004 through and including December 30, 2005, (c) 2.00 to
1.00 from December 31, 2005 through and including December 30, 2006, and (d)
1.50 to 1.00 thereafter, which ratio shall be tested as of the end of each
fiscal quarter, commencing with the fiscal quarter ending as of September 30,
2004.

      11-10. Net Profit. The Borrowers shall earn a Consolidated minimum net
profit, as determined in accordance with GAAP, of at least $1.00, measured
quarterly, commencing with the fiscal quarter ending as of September 30, 2004.

ARTICLE 12 - EVENTS OF DEFAULT.

      Upon the occurrence and during the continuance of any one or more of the
following events (herein, "EVENTS OF DEFAULT"):

                                      -62-
<PAGE>

      12-1. Failure to Pay. The failure by the Borrowers to pay any principal
and/or interest amount under the Revolving Credit Loan, or the Term Loan, or the
Acquisition Term Loan within three (3) calendar days of when due; or

      12-2. Failure to Make Other Payments. The failure by the Borrowers to pay
when due any other Liabilities within three (3) Business Days of when due; or

      12-3. Failure to Perform Certain Liabilities. The failure by the Borrowers
to promptly, punctually and faithfully perform, discharge, or comply with any
Liability set forth under Sections 7-2, 7-6 (other than non-consensual liens
which shall be included within the scope of Section 12-4), 7-7, 7-8, 7-12(b),
7-12(c), 7-12(d) (so long as the Collateral Release Event has not occurred),
7-18, 7-19, 7-20, 7-21, 7-22, 7-29, 11-4, 11-7, 11-8, 11-9 and 11-10; or

      12-4. Failure to Perform Other Liabilities. Any Borrower shall default in
the observance or performance of any other agreement contained in this Agreement
or any other Loan Document (other than as provided in Sections 12-1, 12-2 and
12-3 above), and such default shall continue unremedied for a period of thirty
(30) calendar days after the earlier of (i) the date on which a Responsible
Officer of any Borrower first learns of such failure or (ii) the date on which
written notice of such failure shall have been given to any Borrower by the
Administrative Agent, plus such additional time as may be required to cure such
default because of delays which are beyond the control of the Borrowers, so long
as such default is susceptible of being cured and the Borrowers are acting in
good faith and are making diligent efforts to cure such default and are keeping
the Administrative Agent apprised of such efforts, provided, however: (a) it is
understood that any default which may be cured by the payment of money which the
Borrowers do not have shall not be considered a circumstance beyond the control
of the Borrowers; and (b) the entire cure period under Section 12-4 shall not
exceed the aggregate of sixty (60) calendar days and shall not apply to any
event which is otherwise an Event of Default pursuant to any other clause of
this Article 12; or

      12-5. Misrepresentation. Any representation or warranty now, or hereafter
made by any Borrower to the Administrative Agent or any Lender, in this
Agreement or in any other Loan Document or which is contained in any
certificate, document or financial or other statement furnished by any such
Borrower at any time under or in connection with this Agreement or any such
other Loan Document was not true or accurate in all material respects when given
or when deemed to have been given; or

      12-6. Default of Other Debt. Any Borrower or any Subsidiary shall default
in (i) the payment of any Indebtedness in respect of borrowed money (other than
the Liabilities), any Capital Lease or the deferred purchase price of any
property (which in each case shall not include the Borrowers' accounts payable
incurred in the ordinary course of the Borrowers' business) and such default (A)
shall continue after giving effect to any applicable grace periods and (B) shall
be in respect of an aggregate amount of principal (whether or not due) and
accrued interest exceeding $1,000,000; or (ii) the performance or compliance
with any term of any agreement or instrument relating to such Indebtedness and
such default (A) shall continue, without having been duly cured, waived or
consented to, beyond the period of grace, if any, specified in such agreement or
instrument, (B) shall be in respect of an aggregate amount of

                                      -63-
<PAGE>

principal (whether or not due) and accrued interest exceeding $1,000,000, and
(C) shall permit the acceleration of such Indebtedness prior to its stated
maturity; or

      12-7. Intentionally Omitted.

      12-8. Business Failure. Any act by, against, or relating to any Borrower,
or its property or assets, which act constitutes the application for, consent
to, or sufferance of the appointment of a receiver, trustee, or other person,
pursuant to court action or otherwise, over all, or any part of any Borrower's
property; the granting of any trust mortgage or execution of an assignment for
the benefit of the creditors of any Borrower, or the occurrence of any other
voluntary or involuntary liquidation or extension of debt agreement for any
Borrower; the failure by any Borrower to generally pay the debts of such
Borrower as they mature; adjudication of bankruptcy or insolvency relative to
any Borrower; the entry of an order for relief or similar order with respect to
any Borrower in any proceeding pursuant to the Bankruptcy Code or any other
federal bankruptcy law; the filing of any complaint, application, or petition by
or against any Borrower initiating any matter in which such Borrower is or may
be granted any relief from the debts of such Borrower pursuant to the Bankruptcy
Code or any other insolvency statute or procedure, PROVIDED the Borrowers shall
have thirty (30) days in which to dismiss any such involuntary proceeding; the
calling or sufferance of a meeting of creditors of any Borrower; the meeting by
any Borrower with a formal or informal creditors' committee; the offering by or
entering into by any Borrower of any composition, extension, or any other
arrangement seeking relief from or extension of the debts of such Borrower, or
the initiation of any other judicial or non- judicial proceeding or agreement
by, against, or including any Borrower which seeks or intends to accomplish a
reorganization or arrangement with creditors; or

      12-9. Judgment. A final judgment which, with other outstanding final
judgments against any or all of the Borrowers and its Subsidiaries, exceeds an
aggregate of $1,000,000 shall be rendered against any Borrower or any Subsidiary
and if, within sixty (60) days after entry thereof, such judgment shall not have
been insured to the reasonable satisfaction of the Administrative Agent or
discharged or execution thereof stayed pending appeal, or if, within sixty (60)
days after the expiration of any such stay, such judgment shall not have been
discharged, or if any such judgment shall not be discharged forthwith upon the
commencement of proceedings to foreclose any lien, attachment or charge which
may attach as security therefor and before any of the property or assets of any
Borrower or any Subsidiary shall have been seized in satisfaction thereof; or

      12-10. Restraint of Business. The entry of any court order which enjoins,
restrains or in any way prevents any Borrower from conducting all or any
material part of its business affairs in the ordinary course; or

      12-11. Material Adverse Change. There shall have occurred a Material
Adverse Change (other than an event or condition to the extent disclosed on
Exhibit 6-17 or 7-28) that, to the extent curable, is not cured within thirty
(30) days following the date on which any Borrower has notice (actual or
constructive) thereof'; or

      12-12. Intentionally Omitted.12-13. Change in Ownership.

                                      -64-
<PAGE>

            (a) Any change in the identity of any person currently acting as
chief financial officer or chief executive officer of any Borrower, unless the
subject Borrower shall engage a replacement officer reasonably acceptable to the
Administrative Agent within sixty (60) days of such officer's departure and/or
(b) any Person shall acquire 35 % or more of the capital stock of the Lead
Borrower and/or (c) the failure of the Lead Borrower to own 100% of the capital
stock of each of the other Borrowers; or

      12-14. Casualty Loss. The occurrence of any uninsured loss, theft, damage
or destruction to or of any of the Collateral in excess of $1,000,000.00; or

      12-15. Material Agreement. The default by any Borrower, or termination as
a result of any such default, under any material license, distributor, franchise
or similar agreement used or useful in the operation of the Borrowers' business,
including, without limitation, any license issued by any applicable licensing
authority, which would reasonably be expected to result in a Material Adverse
Change; or

      12-16. Termination of Existence. Except as expressly permitted hereunder,
the termination of existence, dissolution, winding up, or liquidation of the
Lead Borrower; or

      12-17. Termination of Guaranty. The termination, or attempted termination,
of any guaranty by any guarantor of the Liabilities; or

      12-18. Challenge to Loan Documents.

            (a) Any challenge by or on behalf of any Borrower or any guarantor
of the Liabilities to the validity of any Loan Document or the applicability or
enforceability of any Loan Document strictly in accordance with the subject Loan
Document's terms or which seeks to void, avoid, limit, or otherwise adversely
affect any security interest created by or in any Loan Document or any payment
made pursuant thereto.

            (b) Any determination by any court or any other judicial or
government authority that any Loan Document is not enforceable strictly in
accordance with the subject Loan Document's terms or which voids, avoids,
limits, or otherwise adversely affects any security interest created by any Loan
Document or any payment made pursuant thereto; or

      12-19. Indictment - Forfeiture. Except as set forth on EXHIBITS 6-17 AND
7-28, the indictment of, or institution of any legal process or proceeding
against, any Borrower, under any federal, state, municipal, and other civil or
criminal statute, rule, regulation, order, or other requirement having the force
of law where the relief, penalties, or remedies sought or available include the
forfeiture of any property of such Borrower and/or the imposition of any stay or
other order, the effect of which would reasonably be expected to result in a
Material Adverse Change,

      then, and in any such event, so long as the same may be continuing, the
Administrative Agent may, with the consent of the Required Lenders, or shall, at
the request and instruction of the Required Lenders, and by notice in writing to
the Borrowers, declare all amounts owing with respect to this Agreement, the
Notes and the other Loan Documents to be, and they shall thereupon forthwith
become, immediately due and payable without presentment, demand, protest or
other notice of any kind, all of which are hereby expressly waived by the
Borrowers; provided

                                      -65-
<PAGE>

that in the event of any Event of Default specified in Section 12-8 above, all
such amounts shall become immediately due and payable automatically and without
any requirement of notice from the Administrative Agent.

ARTICLE 13 - RIGHTS AND REMEDIES UPON DEFAULT

      In addition to all of the rights, remedies, powers, privileges, and
discretions which the Administrative Agent and/or the Lenders are provided prior
to the occurrence of an Event of Default, the Administrative Agent shall have
the following rights and remedies upon the occurrence and during the continuance
of any Event of Default.

      13-1. Termination of Commitments. The Administrative Agent may with the
consent of the Required Lenders, and shall if directed by the Required Lenders,
by written notice to the Lead Borrower, (i) declare the principal of and accrued
interest in respect of the Liabilities to be forthwith due and payable,
whereupon the principal of and accrued interest in respect of the Liabilities,
and all other amounts then due hereunder, shall become forthwith due and payable
without presentment, demand, protest or other notice of any kind, all of which
are hereby expressly waived by each Borrower, and/or (ii) terminate the
Commitment of the Lenders, whereupon the Total Commitment of the Lenders (and
the Commitment of each individual Lender) to make Loans and issue L/Cs hereunder
shall forthwith terminate without any other notice of any kind; and with respect
to any event described in Section 12-8 above, the Commitments shall
automatically terminate and the principal of the Liabilities then outstanding,
together with accrued interest thereon and all other amounts then due hereunder,
shall automatically become due and payable, without presentment, demand, protest
or any other notice of any kind, all of which are hereby expressly waived by
each of the Borrowers, anything contained herein or in any other Loan Document
to the contrary notwithstanding. Without limiting any provision of this
Agreement or of any Loan Document, an Event of Default under this Agreement
shall also constitute an event of default under each of the Loan Documents.

      13-2. Rights and Remedies.

            (a) The rights, remedies, powers, privileges, and discretions of the
Administrative Agent hereunder (herein, the "ADMINISTRATIVE AGENT'S RIGHTS AND
REMEDIES") shall be cumulative and not exclusive of any rights or remedies which
it would otherwise have. No delay or omission by the Administrative Agent in
exercising or enforcing any of the Agent's Rights and Remedies shall operate as,
or constitute, a waiver thereof. No waiver by the Administrative Agent of any
Event of Default or of any default under any other agreement shall operate as a
waiver of any other default hereunder or under any other agreement. No single or
partial exercise of any of the Administrative Agent's Rights or Remedies, and no
express or implied agreement or transaction of whatever nature entered into
between the Administrative Agent and any Person, at any time, shall preclude the
other or further exercise of the Administrative Agent's Rights and Remedies. No
waiver by the Administrative Agent of any of the Administrative Agent's Rights
and Remedies on any one occasion shall be deemed a waiver on any subsequent
occasion, nor shall it be deemed a continuing waiver. All of the Administrative
Agent's Rights and Remedies and all of the Administrative Agent's rights,
remedies, powers, privileges, and discretions under any other agreement or
transaction are cumulative, and not alternative or exclusive, and may be
exercised by the Administrative Agent

                                      -66-
<PAGE>

at such time or times and in such order of preference as the Administrative
Agent in its sole discretion may determine. The Administrative Agent's Rights
and Remedies may be exercised without resort or regard to any other source of
satisfaction of the Liabilities.

            (b) Without limiting the provisions of subsection (a) above, if and
only if (i) the Collateral Release Event has occurred, and (ii) an Event of
Default has occurred and be continuing, then on the Business Day that the Lead
Borrower receives notice from the Administrative Agent demanding the deposit of
cash collateral pursuant to this paragraph, the Borrowers shall deposit in a
cash collateral account, under the sole dominion and control of the
Administrative Agent, an amount in cash equal to 103% of the stated amount of
the outstanding L/Cs as of such date plus any accrued and unpaid interest
thereon. Each such deposit shall be held by the Administrative Agent as
collateral for the payment and performance of the Liabilities of the Borrowers.
The Administrative Agent shall have exclusive dominion and control, including
the exclusive right of withdrawal, over such cash collateral account. Other than
any interest earned on the investment of such deposits, which investments shall
be made at the option and sole discretion of the Administrative Agent at the
request of the Lead Borrower and at the Borrowers' risk and expense, such
deposits shall not bear interest. Interest or profits, if any, on such
investments shall accumulate in such account. Moneys in such cash collateral
account shall be applied by the Administrative Agent to reimburse the
Administrative Agent for payments on account of drawings under L/Cs for which it
has not been reimbursed and, to the extent not so applied, shall be held first
for the satisfaction of the reimbursement obligations of the Borrowers for the
outstanding L/Cs at such time and thereafter be applied to satisfy other
Liabilities of the Borrowers under this Agreement.

      13-3. Distribution of Collateral Proceeds. In the event that, following
the occurrence and during the continuance of any Event of Default, the
Administrative Agent or any Lender, as the case may be, receives any monies in
connection with the enforcement of any the Loan Documents, or otherwise with
respect to the realization upon any of the Collateral, such monies shall be
distributed for application as follows:

            (a) First, to the payment of, or (as the case may be) the
      reimbursement of the Administrative Agent for or in respect of, all
      reasonable costs, expenses, disbursements and losses which shall have been
      incurred or sustained by the Administrative Agent in connection with the
      collection of such monies by the Administrative Agent, for the exercise,
      protection or enforcement by the Administrative Agent of all or any of the
      rights, remedies, powers and privileges of the Administrative Agent under
      this Agreement or any of the other Loan Documents or in respect of the
      Collateral or in support of any provision of adequate indemnity to the
      Administrative Agent against any taxes or liens which by law shall have,
      or may have, priority over the rights of the Administrative Agent to such
      monies;

            (b) Second, pro rata to each of the Lenders to all other
      Liabilities, provided, however, proceeds from the liquidation of the Real
      Estate shall be first applied to the Term Loan, pro rata, with the
      remaining balance, if any, to be applied to all other Liabilities on a pro
      rata basis;

                                      -67-
<PAGE>

            (c) Third, upon payment and satisfaction in full or other provisions
      for payment in full satisfactory to the Lenders and the Administrative
      Agent of all of the Liabilities, to the payment of any obligations
      required to be paid pursuant to Section 9-615(a)(3) of the UCC, in effect
      from time to time; and

            (d) Fourth, the excess, if any, shall be returned to the Borrowers
      or to such other Persons as are entitled thereto.

ARTICLE 14 - NOTICES.

      14-1. Notice Addresses. All notices, demands, and other communications
made in respect of this Agreement (other than a request for a loan or advance or
other financial accommodation under the Revolving Credit) shall be made to the
following addresses, each of which may be changed upon seven (7) days written
notice to all others given by certified mail, return receipt requested:

If to the Administrative Agent:     Brown Brothers Harriman & Co.
                                    40 Water Street
                                    Boston, Massachusetts 02109
                                    Attention: Mr. John D. Rogers
                                    Fax: 617 772-1138
                                    E-Mail: john.rogers@bbh.com

      With a copy to:               Riemer & Braunstein LLP
                                    Three Center Plaza
                                    Boston, Massachusetts  02108
                                    Attention: Charles W. Stavros, Esquire
                                    Fax: 617 880-3456
                                    E-mail: cstavros@riemerlaw.com

If to any Borrower:                 Dynamics Research Corporation
                                    60 Frontage Road
                                    Andover, Massachusetts 01810
                                    Attention: Elise Caffrey, Treasurer
                                    Fax: 978-474-9204
                                    E-mail: ecaffrey@drc.com

      With a copy to:               Nixon Peabody, LLP
                                    101 Federal Street
                                    Boston, Massachusetts 02110
                                    Attention: Michael Manning, Esquire
                                    Fax: 617-345-1300
                                    E-mail: mmanning@nixonpeabody.com
      14-2. Notice Given.

                                      -68-
<PAGE>

            (a) Notices shall be deemed given at the sooner of when actually
received or (i) if by mail: Three (3) days following deposit in the United
States mail, postage prepaid; (ii) By overnight express delivery: the Business
Day following the day when sent; (iii) By hand: If delivered on a Business Day
after 9:00 AM and no later than Three (3) hours prior to the close of customary
business hours of the recipient, when delivered (otherwise, at the opening of
the then next Business Day); and (iv) By facsimile or electronic transmission:
If sent on a Business Day after 9:00 AM and no later than Three (3) hours prior
to the close of customary business hours of the recipient, one (1) hour after
being sent (otherwise, at the opening of the then next Business Day).

            (b) Rejection or refusal to accept delivery and inability to deliver
because of a changed address or facsimile number for which no due notice was
given shall each be deemed receipt of the notice sent.

ARTICLE 15 - TERM OF AGREEMENT.

      15-1. Termination of Revolving Credit. The Revolving Credit shall be
terminated upon the Termination Date.

      15-2. Effect of Termination. Upon the Termination Date, the Borrower shall
pay the Administrative Agent, for the benefit of the Lenders, the then principal
balance of the Loans, together with any and all accrued and unpaid interest
thereon (whether or not then due). Following such payment, all provisions of
this Agreement, other than those contained in Article 3 which place an
obligation on the Lenders to make any loans or advances or to provide financial
accommodations under the Revolving Credit or to issue L/Cs shall remain in full
force and effect until all Liabilities (including the Revolving Credit, the Term
Loan, and the Acquisition Term Loan) shall have been paid in full.

ARTICLE 16 - GENERAL.

      16-1. Successors and Assigns. This Agreement shall be binding upon the
Borrowers and the Borrowers' representatives, successors, and assigns and shall
inure to the benefit of the Administrative Agent, the Lenders and their
respective successors and assigns provided, however, no trustee or other
fiduciary appointed with respect to the Borrowers shall have any rights
hereunder. In the event that any Lender assigns or transfers its rights under
this Agreement, subject to Article 17 below, the assignee shall thereupon
succeed such Lender to and become vested with all rights, powers, privileges,
and duties of such Lender hereunder and such Lender shall thereupon be
discharged and relieved from its duties and obligations hereunder.

      16-2. Severability. Any determination that any provision of this Agreement
or any application thereof is invalid, illegal, or unenforceable in any respect
in any instance shall not affect the validity, legality, or enforceability of
such provision in any other instance, or the validity, legality, or
enforceability of any other provision of this Agreement.

      16-3. Amendments; Course of Dealing.(a) This Agreement and the other Loan
Documents incorporate all discussions and negotiations among the Borrowers,
Agents and the Lenders, either express or implied, concerning the matters
included herein and in such other instruments, any custom, usage, or course of
dealings to the contrary notwithstanding. No such

                                      -69-
<PAGE>

discussions, negotiations, custom, usage, or course of dealings shall limit,
modify, or otherwise affect the provisions thereof. No failure by the
Administrative Agent to give notice to any Borrower of such Borrower's having
failed to observe and comply with any warranty or covenant included in any Loan
Document shall constitute a waiver of such warranty or covenant or the amendment
of the subject Loan Document. No change made by the Administrative Agent in the
manner by which Availability is determined shall obligate the Administrative
Agent to continue to determine Availability in that manner.

            (b) The Borrowers may undertake any action otherwise prohibited
hereby, and may omit to take any action otherwise required hereby, upon and with
the express prior written consent of the Required Lenders or such other Persons'
consent as may be required by Section 17-17. No consent, modification,
amendment, or waiver of any provision of any Loan Document shall be effective
unless executed in writing by or on behalf of the party to be charged with such
modification, amendment, or waiver (and if such party is a Lender, then by a
duly authorized officer thereof). Any modification, amendment, or waiver
provided by the Required Lenders shall be in reliance upon all representations
and warranties theretofore made to the Lenders by or on behalf of the Borrowers
(and any guarantor, endorser, or surety of the Liabilities) and consequently may
be rescinded by the Lenders in the event that any of such representations or
warranties was not true and complete in all material respects when given.

      16-4. Intentionally Omitted.

      16-5. Costs and Expenses. The Borrowers shall pay on demand all Costs of
Collection and all reasonable expenses of the Administrative Agent in connection
with the preparation, execution, and delivery of this Agreement and of any other
Loan Documents, whether now existing or hereafter arising, including, without
limitation, all appraisal, inspection and other reports conducted in connection
with the underwriting of this Agreement and the loans contemplated hereby, and
all other reasonable expenses which may be incurred by the Administrative Agent
in preparing or amending this Agreement and all other agreements, instruments,
and documents related thereto, or otherwise incurred with respect to the
Liabilities.

      16-6. Copies and Facsimiles. This Agreement and all documents which relate
thereto, which have been or may be hereinafter furnished to the Lenders may be
reproduced by the Lenders by any photographic, microfilm, xerographic, digital
imaging, or other process, and the Lenders may destroy any document so
reproduced. Any such reproduction shall be admissible in evidence as the
original itself in any judicial or administrative proceeding (whether or not the
original is in existence and whether or not such reproduction was made in the
regular course of business). Any facsimile which bears proof of transmission
shall be binding on the party which or on whose behalf such transmission was
initiated and likewise shall be so admissible in evidence as if the original of
such facsimile had been delivered to the party which or on whose behalf such
transmission was received.

      16-7. Massachusetts Law. This Agreement and all rights and obligations
hereunder, including matters of construction, validity, and performance, shall
be governed by the laws of The Commonwealth of Massachusetts.

      16-8. Consent to Jurisdiction.

                                      -70-
<PAGE>

            (a) The Borrowers agree that any legal action, proceeding, case, or
controversy against the Borrowers with respect to any Loan Document may be
brought in the Superior Court of Suffolk County Massachusetts or in the United
States District Court, District of Massachusetts, sitting in Boston,
Massachusetts, as the Administrative Agent may elect in its sole discretion. By
execution and delivery of this Agreement, each Borrower, for itself and in
respect of its property, accepts, submits, and consents generally and
unconditionally, to the jurisdiction of the aforesaid courts.

            (b) Each Borrower WAIVES personal service of any and all process
upon it, and irrevocably consents to the service of process out of any of the
aforementioned courts in any such action or proceeding by the mailing of copies
thereof by certified mail, postage prepaid, to the Lead Borrower at the Lead
Borrower's address for notices as specified herein, such service to become
effective five (5) Business Days after such mailing.

            (c) Each Borrower WAIVES, at the option of the Administrative Agent,
any objection based on forum non conveniens and any objection to venue of any
action or proceeding instituted under any of the Loan Documents and consents to
the granting of such legal or equitable remedy as is deemed appropriate by the
Court.

            (d) Nothing herein shall affect the right of the Administrative
Agent to bring legal actions or proceedings in any other competent jurisdiction.

            (e) Each Borrower agrees that any action commenced by any Borrower
asserting any claim or counterclaim arising under or in connection with this
Agreement or any other Loan Document shall be brought in the Superior Court of
Suffolk County Massachusetts or in the United States District Court, District of
Massachusetts, sitting in Boston, Massachusetts, and that such Courts shall have
exclusive jurisdiction with respect to any such action, with the exception of
any counterclaim brought in action commenced by the Administrative Agent or any
Lender in a different forum, which counterclaim may be brought in such alternate
forum.

      16-9. Indemnification. Each Borrower shall jointly and severally
indemnify, defend, and hold the Administrative Agent and each Lender and any
employee, officer, or agent of the Administrative Agent and any Lender (each, an
"INDEMNIFIED PERSON") harmless of and from any claim brought or threatened
against any Indemnified Person by any Borrower, any guarantor or endorser of the
Liabilities, or any other Person (as well as from attorneys' reasonable fees and
expenses in connection therewith) on account of the Administrative Agent's and
such Lender's relationship with the Borrowers or any other guarantor or endorser
of the Liabilities (each of which may be defended, compromised, settled, or
pursued by the Indemnified Person with counsel of the Administrative Agent'
selection, but at the expense of the Borrowers) other than any claim as to which
a final determination is made in a judicial proceeding (in which the
Administrative Agent and any other Indemnified Person has had an opportunity to
be heard), which determination includes a specific finding that the Indemnified
Person seeking indemnification had acted in a grossly negligent manner, with
willful misconduct or in actual bad faith. This indemnification shall survive
payment of the Liabilities and/or any termination, release, or discharge
executed by the Administrative Agent in favor of the Borrowers.

      16-10. Rules of Construction.

                                      -71-
<PAGE>

            (a) The following rules of construction shall be applied in the
interpretation, construction, and enforcement of this Agreement and of the other
Loan Documents:

                  (i) Words in the singular include the plural and words in the
      plural include the singular.

                  (ii) Headings (indicated by being underlined) and the Table of
      Contents are solely for convenience of reference and do not constitute a
      part of the instrument in which included and do not affect such
      instrument's meaning, construction, or effect.

                  (iii) The words "includes" and "including" are not limiting.

                  (iv) The words "may not" are prohibitive and not permissive.

                  (v) The word "or" is not exclusive.

                  (vi) Terms which are defined in one section of an instrument
      are used with such definition throughout the instrument in which so
      defined.

                  (vii) The symbol "$" refers to United States Dollars.

                  (viii) References to "herein", "hereof", and "within" are to
      this entire Loan Agreement and not merely the provision in which such
      reference is included.

                  (ix) Except as otherwise specifically provided, all references
      to time are to Boston time.

                  (x) In the determination of any notice, grace, or other period
      of time prescribed or allowed hereunder, unless otherwise provided (A) the
      day of the act, event, or default from which the designated period of time
      begins to run shall not be included and the last day of the period so
      computed shall be included unless such last day is not a Business Day, in
      which event the last day of the relevant period shall be the then next
      Business Day and (B) the period so computed shall end at 5:00 PM on the
      relevant Business Day.

                  (xi) References to "this Agreement" or to any other Loan
      Document is to the subject instrument as amended to the date on which
      application of such reference is being made.

            (b) The Loan Documents shall be construed and interpreted in a
harmonious manner and in keeping the intentions set forth in Section 16-11
hereof, provided, however, in the event of any inconsistency between the
provisions of this Agreement and any other Loan Document, the provisions of this
Agreement shall govern and control.

      16-11. Intent. It is intended that

            (a) This Agreement take effect as a sealed instrument.

                                      -72-
<PAGE>

            (b) The Administrative Agent's or the Required Lenders' consent or
      the Lenders' consent to any action of the Borrowers which is prohibited
      unless such consent is given may be given or refused by the applicable
      parties in its sole discretion.

      16-12. Setoff. Regardless of the adequacy of any collateral, during the
continuance of any Event of Default, any deposits (general or specific, time or
demand, provisional or final, regardless of currency, maturity, or the branch of
where such deposits are held) or other sums credited by or due from any of the
Lenders to the Borrowers and any securities or other property of the Borrowers
in the possession of such Lender may be applied to or set off against the
payment of Liabilities and any and all other liabilities, direct, or indirect,
absolute or contingent, due or to become due, now existing or hereafter arising,
of the Borrowers to such Lender. Each of the Lenders agrees with each other
Lender that if such Lender shall receive from the Borrowers, whether by
voluntary payment, exercise of the right of setoff, counterclaim, cross action,
enforcement of the claim evidenced by the Notes held by such Lender by
proceedings against the Borrowers at law or in equity or by proof thereof in
bankruptcy, reorganization, liquidation, receivership or similar proceedings, or
otherwise, and shall retain and apply to the payment of the Note or Notes held
by such Lender any amount in excess of its ratable portion of the payments
received by all of the Lenders with respect to the Notes held by all of the
Lenders, such Lender will make such disposition and arrangements with the other
Lenders with respect to such excess, either by way of distribution, pro tanto
assignment of claims, subrogation or otherwise as shall result in each Lender
receiving in respect of the Notes held by it its proportionate payment as
contemplated by this Agreement; provided that if all or any part of such excess
payment is thereafter recovered from such Lender, such disposition and
arrangements shall be rescinded and the amount restored to the extent of such
recovery, but without interest.

      16-13. Maximum Interest Rate. Regardless of any provision of any Loan
Document, the Lenders shall never be entitled to contract for, charge, receive,
collect, or apply as interest on any Liability, any amount in excess of the
maximum rate imposed by applicable law. Any payment which is made which, if
treated as interest on a Liability would result in such interest's exceeding
such maximum rate shall be held, to the extent of such excess, as collateral for
the Liabilities.

      16-14. Waivers.(a) Each Borrower (and all guarantors, endorsers, and
sureties of the Liabilities) make each of the waivers included in subsection
(b), below, knowingly, voluntarily, and intentionally, and understands that the
Administrative Agent and each Lender, in entering into the financial
arrangements contemplated hereby and in providing loans and other financial
accommodations to or for the account of each Borrower as provided herein,
whether not or in the future, is relying on such waivers.

            (b) TO THE EXTENT PERMITTED BY APPLICABLE LAW,EACH BORROWER, AND
EACH SUCH GUARANTOR, ENDORSER, AND SURETY RESPECTIVELY WAIVES THE FOLLOWING:

                  (i) Except as otherwise specifically required hereby, notice
      of non-payment, demand, presentment, protest and all forms of demand and
      notice.

                                      -73-
<PAGE>

                  (ii) Except as otherwise specifically required hereby, the
      right to notice and/or hearing prior to the Administrative Agent'
      exercising of the Administrative Agent' rights upon default.

                  (iii) THE RIGHT TO A JURY IN ANY TRIAL OF ANY CASE OR
      CONTROVERSY IN WHICH ANY AGENT OR ANY LENDER IS OR BECOMES A PARTY
      (WHETHER SUCH CASE OR CONTROVERSY IS INITIATED BY OR AGAINST, ANY AGENT,
      ANY LENDER OR IN WHICH ANY AGENT OR ANY LENDER IS JOINED AS A PARTY
      LITIGANT), WHICH CASE OR CONTROVERSY ARISES OUT OF OR IS IN RESPECT OF,
      ANY RELATIONSHIP AMONGST OR BETWEEN ANY BORROWER OR ANY OTHER PERSON, ANY
      AGENT AND/OR ANY LENDER (AND EACH AGENT AND EACH LENDER LIKEWISE WAIVES
      THE RIGHT TO A JURY IN ANY TRIAL OF ANY SUCH CASE OR CONTROVERSY).

                  (iv) Any defense, counterclaim, set-off, recoupment, or other
      basis on which the amount of any Liability, as stated on the books and
      records of the Administrative Agent, could be reduced or claimed to be
      paid otherwise than in accordance with the tenor of and written terms of
      such Liability.

                  (v) Any claim to consequential, special, or punitive damages.

      16-15. Payments; Application. All payments made by or on behalf of the
Borrowers hereunder or under any other Loan Document shall be paid by such
Person to the Administrative Agent in United States currency at the
Administrative Agent's address specified in Section 14-1 (or at such other
address as the Administrative Agent shall specify), in immediately available
funds, on), in immediately available funds, on or before 2:00 p.m. (Boston,
Massachusetts time) on the due date thereof. Payments received by the
Administrative Agent prior to the occurrence of an Event of Default will be
applied first to fees, expenses and other amounts due hereunder (excluding
principal and interest); second, to accrued interest; and third to outstanding
principal. After the occurrence of an Event of Default payments will be applied
to the Liabilities as the Administrative Agent determines in its sole
discretion; except that payments on account of the proceeds of the Collateral,
after the occurrence of an Event of Default, shall be applied as provided for in
Section 13-3.

      16-16. Receipt of Agreement. Each Borrower acknowledges receipt of a
completed copy of this Agreement.

ARTICLE 17 - THE AGENT.

      17-1. Authorization; Non-Reliance by Lenders; Reliance by Administrative
Agent; Dispute Resolution.(a) Each Lender appoints and designates Brown Brothers
Harriman & Co., as the "Administrative Agent" hereunder and under the Loan
Documents. Each Lender hereby authorizes the Administrative Agent (i) to execute
those Loan Documents and all other instruments relating thereto to which the
Administrative Agent is a party, and (ii) to take such action on behalf of each
of the Lenders and to exercise all such powers as are hereunder and under any of
the other Loan Documents and any related documents delegated to the

                                      -74-
<PAGE>

Administrative Agent, together with such powers as are reasonably incident
thereto, provided that no duties or responsibilities not expressly assumed
herein or therein shall be implied to have been assumed by the Administrative
Agent. The relationship between the Administrative Agent and the Lenders is and
shall be that of agent and principal only, and nothing contained in this
Agreement or any of the other Loan Documents shall be construed to constitute
Administrative Agent as a trustee or fiduciary for any Lender. The
Administrative Agent shall not have any duties or responsibilities to, or any
fiduciary relationship with, any Lender except for those expressly set forth in
this Agreement. The Borrowers acknowledge that in certain instances any action
to be taken by the Administrative Agent may only be taken upon approval of the
Required Lenders or all the Lenders.

            (b) Each Lender represents to all other Lenders and to the
Administrative Agent that such Lender:

                  (i) Independently and without reliance on any representation
      or act by the Administrative Agent or by any other Lender, and based on
      such documents and information as that Lender has deemed appropriate, has
      made that Lender's own appraisal of the financial condition and affairs of
      the Borrowers and decision to enter into this Agreement.

                  (ii) Has relied upon that such Lender's review of the Loan
      Documents by that Lender and by counsel to that Lender as that Lender
      deemed appropriate under the circumstances.

            (c) Each Lender agrees that such Lender, independently and without
reliance upon the Administrative Agent or any other Lender, and based upon such
documents and information as such Lender shall deem appropriate at the time,
will continue to make such Lender's own appraisals of the financial condition
and affairs of the Borrowers when determining whether to take or not to take any
discretionary action under this Agreement.

            (d) The Administrative Agent, in the discharge of its duties
hereunder, shall not be required to make inquiry of, or to inspect the
properties or books of, any Person.

            (e) Except for notices, reports, and other documents and information
expressly required to be furnished to the Lenders by the Administrative Agent
hereunder (as to which, see Section 17-10), the Administrative Agent shall not
have any affirmative duty or responsibility to provide any Lender with any
credit or other information concerning any Person, which information may come
into the possession of the Administrative Agent or any Affiliate of the
Administrative Agent.

            (f) Each Lender, at such Lender's request, shall have reasonable
access to all nonprivileged documents in the possession of the Administrative
Agent, which documents relate to the Administrative Agent's performance of its
duties hereunder.

            (g) The Administrative Agent shall be entitled to rely upon any
certificate, notice or other document (including any cable, telegram, telex, or
facsimile) reasonably believed by the Administrative Agent to be genuine and
correct and to have been signed or sent by or on behalf of the proper person or
persons, and upon advice and statements of attorneys, accountants

                                      -75-
<PAGE>

and other experts selected by the Administrative Agent. As to any matters not
expressly provided for in this Agreement, any Loan Document, or in any other
document referred to therein, the Administrative Agent shall in all events be
fully protected in acting, or in refraining from acting, in accordance with the
applicable consent required by this Agreement. Instructions given with the
requisite consent shall be binding on all Lenders.

            (h) Any dispute among the Lenders and/or the Administrative Agent
concerning the interpretation, administration, or enforcement of the financing
arrangements contemplated by this or any other Loan Document or the
interpretation or administration of this or any other Loan Document which cannot
be resolved amicably shall be resolved in the United States District Court for
the District of Massachusetts, sitting in Boston or in the Superior Court of
Suffolk County, Massachusetts, to the jurisdiction of which courts each Lender
hereto hereby submits.

      17-2. Employees and Agents. The Administrative Agent may exercise its
powers and execute its duties by or through employees or agents and shall be
entitled to take, and to rely on, advice of counsel concerning all matters
pertaining to its rights and duties under this Agreement and the other Loan
Documents. The Administrative Agent may utilize the services of such Persons as
said Administrative Agent in its sole discretion may reasonably determine, and
all reasonable fees and expenses of any such Persons shall be paid by the
Borrowers.

      17-3. No Liability. Neither the Administrative Agent nor any of its
shareholders, directors, officers or employees nor any other Person assisting
them in their duties nor any agent or employee thereof, shall be liable for any
waiver, consent or approval given or any action taken, or omitted to be taken,
in good faith by them hereunder or under any of the other Loan Documents, or in
connection herewith or therewith, or be responsible for the consequences of any
oversight or error of judgment whatsoever, except that the Administrative Agent
or such other Person, as the case may be, may be liable for losses due to its
willful misconduct or gross negligence.

      17-4. No Representations. The Administrative Agent shall not be
responsible for the execution or validity or enforceability of this Agreement,
the Notes, any of the other Loan Documents or any instrument at any time
constituting, or intended to constitute, collateral security for the Notes, or
for the value of any such collateral security or for the validity,
enforceability or collectibility of any such amounts owing with respect to the
Notes, or for any recitals or statements, warranties or representations made
herein or in any of the other Loan Documents or in any certificate or instrument
hereafter furnished to it by or on behalf of the Borrowers or any of their
Subsidiaries, or be bound to ascertain or inquire as to the performance or
observance of any of the terms, conditions, covenants or agreements herein or in
any instrument at any time constituting, or intended to constitute, collateral
security for the Notes. The Administrative Agent shall not be bound to ascertain
whether any notice, consent, waiver or request delivered to it by the Borrowers
or any holder of any of the Notes shall have been duly authorized or is true,
accurate and complete. The Administrative Agent has not made nor does it now
make any representations or warranties, express or implied, nor do they assume
any liability to the Lenders, with respect to the credit worthiness or financial
condition of the Borrowers or any Subsidiaries. Each Lender acknowledges that it
has, independently and without reliance upon the Administrative Agents or any
other Lender, and based upon such

                                      -76-
<PAGE>

information and documents as it has deemed appropriate, made its own credit
analysis and decision to enter into this Agreement.

      17-5. Funding Procedures; Payments.

            (a) The Administrative Agent shall advise each Lender, no later than
2:00 PM (Boston Time) (A) on a date on which any Revolving Credit Loan is to be
made to the Lead Borrower on that date, and (B) on the date of any request for
the making, Conversion or continuation of a LIBOR Loan. Such advice, in each
instance, may be by telephone or facsimile transmission, provided that if such
advice is by telephone, it shall be confirmed in writing. Advice of a Revolving
Credit Loan shall include the amount of and interest rate applicable to the
subject Revolving Credit Loan. Subject to that Lender's Commitment of the
Revolving Credit, each Lender, by not later than the end of business on the day
on which the subject Revolving Credit Loan is to be made, shall transfer that
Revolving Credit Lender's Revolving Credit Commitment Percentage of the subject
Revolving Credit Loan to the Administrative Agent.

            (b) Each Revolving Credit Lender shall make available to the
Administrative Agent, as applicable, as provided herein, that Lender's Revolving
Credit Commitment Percentage of the following:

                  (i) Each Revolving Credit Loan, up to the maximum amount of
      that Revolving Credit Lender's Revolving Credit Commitment of the
      Revolving Credit Loans.

                  (ii) Up to the maximum amount of that Lender's Revolving
      Credit Commitment of each drawing on a L/C (to the extent that such L/C
      Drawing is not "covered" by a Revolving Credit Loan as provided herein).

            (c) In all circumstances, the Administrative Agent may:

                  (i) Assume that each Lender, subject to Section 17-5(a),
      timely shall make available to the Administrative Agent that Lender's
      Revolving Credit Commitment Percentage of each Revolving Credit Loan,
      notice of which is provided pursuant to Section 17-5(a).

                  (ii) In reliance upon such assumption, make available the
      corresponding amount to the applicable Borrowers.

                  (iii) Assume that each Lender timely shall pay, and shall make
      available, to the Administrative Agent all other amounts which that Lender
      is obligated to so pay and/or make available hereunder or under any of the
      Loan Documents.

            (d) (i) A payment by the Borrowers to the Administrative Agent
hereunder or any of the other Loan Documents for the account of any Lender shall
constitute a payment to such Lender. The Administrative Agent agrees promptly to
distribute to each Lender such Lender's Commitment Percentage of payments
received by the Administrative Agent for the account of the Lenders except as
otherwise expressly provided herein or in any of the other Loan Documents;

                                      -77-
<PAGE>

                  (ii) the amount of each Lender's Commitment Percentage of
outstanding Revolving Credit Loans shall be computed weekly (or more frequently
in the Administrative Agent's discretion) and shall be adjusted upward or
downward based on all Revolving Credit Loans and repayments of Revolving Credit
Loans received by the Administrative Agent as of 3:00 p.m., Boston time, on the
first Business Day following the end of the period specified by the
Administrative Agent (such date, the "Settlement Date");

                  (iii) the Administrative Agent shall deliver to each of the
Lenders promptly after the Settlement Date a summary statement of the amount of
outstanding Revolving Credit Loans for the period and the amount of repayments
received for the period. As reflected on the summary statement: (x) the
Administrative Agent shall transfer to each Lender its applicable Commitment
Percentage of repayments, and (y) each Lender shall transfer to the
Administrative Agent (as provided below), or the Administrative Agent shall
transfer to each Lender, such amounts as are necessary to insure that, after
giving effect to all such transfers, the amount of Revolving Credit Loans made
by each Lender with respect to Revolving Credit Loans shall be equal to such
Lender's applicable Commitment Percentage of Revolving Loans outstanding as of
such Settlement Date. If the summary statement requires transfers to be made to
the Administrative Agent by the Lenders and is received prior to 12:00 Noon,
Boston time, on a Business Day, such transfers shall be made in immediately
available funds no later than 11:00 a.m., Boston time, that day; and, if
received after 11:00 a.m., Boston time, then no later than 3:00 p.m., Boston
time, on the next Business Day. The obligation of each Lender to transfer such
funds is irrevocable, unconditional and without recourse to or warranty by the
Administrative Agent. If and to the extent any Lender shall not have so made its
transfer to the Administrative Agent, such Lender agrees to pay to the
Administrative Agent, forthwith on demand such amount, together with interest
thereon, for each day from such date until the date such amount is paid to the
Administrative Agent at the Federal Funds Effective Rate.

            (e) The Borrowers acknowledge that each Lender's responsibilities
hereunder are several and that each Lender shall only be responsible to fund up
to each Lender's Commitment Percentage. The Borrowers agree to release and hold
harmless any nondelinquent Lenders from any claims, damages or costs arising on
account of any failure of a Delinquent Lender to comply with the requirements of
this Agreement.

            (f) If in the opinion of the Administrative Agent the distribution
of any amount received by it in such capacity hereunder, under the Notes or
under any of the other Loan Documents might involve it in liability, it may
refrain from making distribution until its right to make distribution shall have
been adjudicated by a court of competent jurisdiction (provided that such action
by the Administrative Agent shall not create an independent default by the
Borrowers). If a court of competent jurisdiction shall adjudge that any amount
received and distributed by the Administrative Agent is to be repaid, each
Person to whom any such distribution shall have been made shall either repay to
the Administrative Agent its proportionate share of the amount so adjudged to be
repaid or shall pay over the same in such manner and to such Persons as shall be
determined by such court.

      17-6. Holders of Notes. The Administrative Agent may deem and treat the
payee of any Note as the absolute owner or purchaser thereof for all purposes
hereof until it shall have

                                      -78-
<PAGE>

been furnished in writing with a different name by such payee or by a subsequent
holder, assignee or transferee.

      17-7. Indemnity. The Lenders ratably agree hereby to indemnify and hold
harmless the Administrative Agent from and against any and all claims, actions
and suits (whether groundless or otherwise), losses, damages, costs, out of
pocket expenses (including any expenses for which the Administrative Agent has
not been reimbursed by the Borrowers as required by Section 16-5), and
liabilities of every nature and character arising out of or related to this
Agreement, the Notes, or any of the other Loan Documents or the transactions
contemplated or evidenced hereby or thereby, or the Administrative Agent's
actions taken hereunder or thereunder, except to the extent that any of the same
shall be directly caused by the Administrative Agents' willful misconduct or
gross negligence.

      17-8. Administrative Agent as Lender; Limitation on other Agents'
Liability. In its individual capacity, Brown Brothers Harriman & Co. shall have
the same obligations and the same rights, powers and privileges in respect to
its Commitments and the Loans made by it, and as the holder of any of the Notes
as it would have were it not also the Administrative Agent. None of the
Documentation Agent or the Co-Syndication Agents, in such capacities, shall have
any right, power, obligation, liability, responsibility or duty under this
Agreement or any other Loan Document.

      17-9. Resignation. The Administrative Agent may resign at any time by
giving sixty (60) days' prior written notice thereof to the Lenders and the
Borrowers. Upon any such resignation, the Required Lenders shall have the right
to appoint a successor to Administrative Agent. Unless an Event of Default shall
have occurred and be continuing, such successor Administrative Agent shall be
reasonably acceptable to the Borrowers in their reasonable discretion. If no
successor Administrative Agent shall have been so appointed by the Required
Lenders and shall have accepted such appointment within thirty (30) days after
the retiring Administrative Agent's giving of notice of resignation, then the
retiring Administrative Agent may, on behalf of the Lenders, after consultation
with the Lenders, appoint a successor Administrative Agent, which shall be a
Lender or which meets the requirements of subjection (a) of the definition of an
Eligible Assignee, and unless an Event of Default shall have occurred and be
continuing, such successor Administrative Agent being reasonably acceptable to
the Borrowers in its reasonable discretion. Upon the acceptance of any
appointment as Administrative Agent hereunder by a successor Administrative
Agent, such successor Administrative Agent shall thereupon succeed to and become
vested with all the rights, powers, privileges and duties of the retiring
Administrative Agent, and the retiring Administrative Agent shall be discharged
from its duties and obligations hereunder. After any retiring Administrative
Agent's resignation, the provisions of this Agreement and the other Loan
Documents shall continue in effect for its benefit in respect of any actions
taken or omitted to be taken by it while it was acting as Administrative Agent.
In addition, if at any time Administrative Agent shall no longer act as a Lender
hereunder (subject to the provisions of Section 17-13 below), unless same
results from a merger or other consolidation of the Administrative Agent with a
Lender, the Required Lenders shall have the right to appoint a successor
Administrative Agent subject to the provisions of this Section 17-9.

                                      -79-
<PAGE>

      17-10. Notification of Suspension Events and Events of Default;
Distributions of Notices and Documents by Administrative Agent.(a) Each Lender
hereby agrees that, upon learning of the existence of a Suspension Event or an
Event of Default, it shall promptly notify the Administrative Agent thereof. The
Administrative Agent hereby agrees that upon receipt of any notice under this
Section 17-10 it shall promptly notify in writing the other Lenders of the
existence of such Suspension Event or Event of Default.

            (b) The Administrative Agent, to the extent that the Administrative
Agent has not done so, will forward to each Lender, promptly after the
Administrative Agent's receipt thereof, a copy of each notice or other document
furnished to the Administrative Agent pursuant to this Agreement, including
quarterly and annual financial statements received from the Borrowers pursuant
to Article 11 of this Agreement, other than any of the following:

                  (i) Routine communications associated with requests for
      Revolving Credit Loans and/or the issuance of L/C's.

                  (ii) Routine or nonmaterial communications.

                  (iii) Any notice or document required by any of the Loan
      Documents to be furnished to the Lenders by the Borrowers.

                  (iv) Any notice or document of which the Administrative Agent
      has knowledge that such notice or document had been forwarded to the
      Lenders other than by the Administrative Agent.

      17-11. Duties in the Case of Enforcement. In case that one or more Events
of Default have occurred and shall be continuing, and whether or not
acceleration of the Liabilities shall have occurred, the Administrative Agent
shall, if (a) so requested by the Required Lenders and (b) the Required Lenders
have provided to the Administrative Agent such additional indemnities and
assurances against expenses and liabilities as the Administrative Agent may
reasonably request, proceed to enforce the provisions of the Loan Documents
authorizing the sale or other disposition of all or any part of the Collateral
and exercise all or any such other legal and equitable and other rights or
remedies as it may have in respect of such Collateral. The Required Lenders may
direct the Administrative Agent in writing as to the method and the extent of
any such sale or other disposition, the Lenders hereby agreeing to indemnify and
hold the Administrative Agent harmless from all liabilities incurred in respect
of all actions taken or omitted in accordance with such directions, provided
that the Administrative Agent need not comply with any such direction to the
extent that the Administrative Agent reasonably believes its compliance with
such direction to be unlawful or, upon the advice of counsel, would be found to
be commercially unreasonable in any applicable jurisdiction. The Administrative
Agent may, in its discretion but without obligation, in the absence of direction
from the Required Lenders, take such interim actions as they believe necessary
to preserve the rights of the Lenders hereunder and in and to any Collateral
securing the Liabilities, including but not limited to petitioning a court for
injunctive relief, appointment of a receiver or preservation of the proceeds of
any Collateral. Each of the Lenders acknowledges and agrees that no individual
Lender may separately enforce or exercise any of the provisions of any of the
Loan Documents, including without limitation the Notes, other than through the
Administrative Agent.

                                      -80-
<PAGE>

      17-12. Delinquent Lender. If for any reason any Lender shall fail or
refuse to abide by its obligations under the Agreement, including without
limitation its obligation to make available to the Administrative Agent its pro
rata share of any Loan, expenses or setoff (a "DELINQUENT LENDER") and such
failure is not cured within ten (10) days of receipt from the Administrative
Agent of written notice thereof, then, in addition to the rights and remedies
that may be available to Administrative Agent, other Lenders, the Borrowers or
any other party at law or in equity, and not at limitation thereof, (i) such
Delinquent Lender's right to participate in the administration of, or
decision-making rights related to, any Loan, this Agreement or the other Loan
Documents shall be suspended during the pendency of such failure or refusal, and
(ii) a Delinquent Lender shall be deemed to have assigned any and all payments
due to it from the Borrowers, whether on account of the outstanding Loans,
interest, fees or otherwise, to the remaining non-delinquent Lenders for
application to, and reduction of, their proportionate shares of the outstanding
Loans until, as a result of application of such assigned payments the Lenders'
respective pro rata shares of the outstanding Loans shall have returned to those
in effect immediately prior to such delinquency and without giving effect to the
nonpayment causing such delinquency. The Delinquent Lender's decision-making and
participation rights to payments as set forth in clauses (i) and (ii)
hereinabove shall be restored only upon the payment by the Delinquent Lender of
its pro rata share of the Loans or expenses as to which it is delinquent,
together with interest thereon at the Default Rate from the date when originally
due until the date upon which any such amounts are actually paid.

      The non-delinquent Lenders shall also have the right, but not the
obligation, in their respective, sole and absolute discretion, to acquire for no
cash consideration, (pro rata, based on the respective Commitments of those
Lenders electing to exercise such right) the Delinquent Lender's Commitment to
fund any future Loan (the "FUTURE COMMITMENT"). Upon any such purchase of the
pro rata share of any Delinquent Lender's Future Commitment, the Delinquent
Lender's share in any future Loans and its rights under the Loan Documents with
respect thereto shall terminate on the date of purchase, and the Delinquent
Lender shall promptly execute all documents reasonably requested to surrender
and transfer such interest, including, if so requested, an Assignment and
Acceptance. Each Delinquent Lender shall indemnify Administrative Agent and each
non-delinquent Lender from and against any and all loss, damage or expenses,
including but not limited to reasonable attorneys' fees and funds advanced by
Administrative Agent or by any non-delinquent Lender, on account of an
Delinquent Lender's failure to timely fund its pro rata share of a Loan or to
otherwise perform its obligations under the Loan Documents.

      17-13. Assignment and Participation.

            (a) Conditions to Assignment by Lenders. Except as provided herein,
each Lender may assign to one or more Eligible Assignees (or to any third party
after the occurrence of an Event of Default and while same is continuing) all or
a portion of its interests, rights and obligations under this Agreement
(including all or a portion of its Commitment Percentage and Commitment and the
same portion of the Loans at the time owing to it and the Notes held by it),
upon satisfaction of the following conditions: (a) each of the Administrative
Agent and the Borrowers shall have given its prior written consent to such
assignment (provided that, in the case of the Borrowers, such consent will not
be unreasonably withheld and shall not be required if an Event of Default shall
have occurred and be continuing), (b) each such assignment shall be

                                      -81-
<PAGE>

of a constant, and not a varying, percentage of all the assigning Lender's
rights and obligations under this Agreement, (c) prior to the occurrence of an
Event of Default, each assignment shall be in an amount that is at least Ten
Million Dollars ($10,000,000.00) and is a whole multiple of Two Million Dollars
($2,000,000.00), and (d) the parties of such assignment shall execute and
deliver to the Administrative Agent, for recording in the Register, an
Assignment and Acceptance, substantially in the form of Exhibit AA hereto (an
"ASSIGNMENT AND ACCEPTANCE"), together with any Notes subject to such
assignment. Upon such execution, delivery, acceptance and recording, from and
after the effective date specified in each Assignment and Acceptance, which
effective date shall be at least five (5) Business Days after the execution
thereof, (x) the assignee thereunder shall be a party hereto and, to the extent
provided in such Assignment and Acceptance, have the rights and obligations of a
Lender hereunder, and (y) the assigning Lender shall, to the extent provided in
such assignment and upon payment to the Administrative Agent of the registration
fee referred to in Section 17-13(c), be released from its obligations under this
Agreement.

            (b) Certain Representations and Warranties: Limitations, Covenants.
By executing and delivering an Assignment and Acceptance, the parties to the
assignment thereunder confirm to and agree with each other and the other parties
hereto as follows:

                  (i) other than the representation and warranty that it is the
      legal and beneficial owner of the interest being assigned thereby free and
      clear of any adverse claim, the assigning Lender makes no representation
      or warranty, express or implied, and assumes no responsibility with
      respect to any statements, warranties or representations made in or in
      connection with this Agreement or the execution, legality, validity,
      enforceability, genuineness, sufficiency or value of this Agreement, the
      other Loan Documents or any other instrument or document furnished
      pursuant hereto or the attachment, perfection or priority of any security
      interest or mortgage;

                  (ii) the assigning Lender makes no representation or warranty
      and assumes no responsibility with respect to the financial condition of
      the Borrowers and its affiliates, related entities or subsidiaries or any
      other person primarily or secondarily liable in respect of any of the
      Liabilities, or the performance or observance by the Borrowers or any
      other person primarily secondarily liable in respect of any of the
      Liabilities or any of their obligations under this Agreement or any of the
      other Loan Documents or any other instrument or document furnished
      pursuant hereto or thereto;

                  (iii) such assignee confirms that it has received a copy of
      this Agreement, together with copies of the most recent financial
      statement provided by the Borrowers as required by the terms of this
      Agreement, together with such other documents and information as it has
      deemed appropriate to make its own credit analysis and decision to enter
      into such Assignment and Acceptance;

                  (iv) such assignee will, independently and without reliance
      upon the assigning Lender, the Administrative Agent or any other Lender
      and based on such documents and information as it shall deem appropriate
      at the time, continue to make its own credit decisions in taking or not
      taking action under this Agreement;

                                      -82-
<PAGE>

                  (v) such assignee represents and warrants that (to the extent
      required herein) it is an Eligible Assignee;

                  (vi) such assignee appoints and authorizes the Administrative
      Agent to take such action as agent on its behalf and to exercise such
      powers under this Agreement and the other Loan Documents as are delegated
      to the Administrative Agent by the terms hereof or thereof, together with
      such powers as are reasonably incidental thereto;

                  (vii) such assignee agrees that it will perform in accordance
      with their terms all of the obligations that by the terms of this
      Agreement are required to be performed by it as a Lender; and

                  (viii) such assignee represents and warrants that it is
      legally authorized to enter into such Assignment and Acceptance.

            (c) Register. The Administrative Agent shall maintain a copy of each
Assignment and Acceptance delivered to it and a register or similar list (the
"REGISTER") for the recordation of the names and addresses of the Lenders and
the Commitment Percentage of, and principal amount of the Loans owing to the
Lenders from time to time. The entries in the Register shall be conclusive, in
the absence of manifest error, and the Borrowers, the Administrative Agent and
the Lenders may treat each person whose name is recorded in the Register as a
Lender hereunder for all purposes of this Agreement. The Register shall be
available for inspection by the Borrowers and the Lenders at any reasonable time
and from time to time upon reasonable prior notice. Upon each such recordation,
the assigning Lender agrees to pay to the Administrative Agent a registration
fee in the sum of Three Thousand Five Hundred Dollars ($3,500.00).

            (d) New Notes. Upon its receipt of an Assignment and Acceptance
executed by the parties to such assignment, together with each Note subject to
such assignment, the Administrative Agent shall (a) record the information
contained therein in the Register, and (b) give prompt notice thereof to the
Borrowers and the Lenders (other than the assigning Lender). Within five (5)
Business Days after receipt of such notice, the Borrowers, at their own expense,
shall execute and deliver to the Administrative Agent, in exchange for each
surrendered Note, a new Note to the order of such assignee in an amount equal to
the amount assumed by such assignee pursuant to such Assignment and Acceptance
and, if the assigning Lender has retained some portion of its obligations
hereunder, a new Note to the order of the assigning Lender in an amount equal to
the amount retained by it hereunder. Such new Notes shall provide that they are
replacements for the surrendered Notes, shall be in an aggregate principal
amount equal to the aggregate principal amount of the surrendered Notes, shall
be dated the effective date of such Assignment and Acceptance and shall
otherwise be substantially in the form of the assigned Notes.

            (e) Participations. Each Lender may sell participations to one or
more banks or other financial institutions in all or a portion of such Lender's
rights and obligations under this Agreement and the other Loan Documents;
provided that (a) each such participation shall be in a minimum amount of Five
Million Dollars ($5,000,000.00), (b) prior to the occurrence of an Event of
Default each participant shall meet the requirements of an Eligible Assignee,
(c) any

                                      -83-
<PAGE>

such sale or participation shall not affect the rights and duties of the selling
Lender hereunder to the Borrowers, and (d) the only rights granted to the
participant pursuant to such participation shall be rights against the assigning
Lender, and neither the Administrative Agent nor any other Lender shall have any
obligation, duty or liability to any such participant of any other Lender.

      17-14. Pledge to Federal Reserve. Any Lender may at any time pledge all or
any portion of its rights under the Loan Documents including any portion of the
Notes to any of the twelve (12) Federal Reserve Banks organized under Section 4
of the Federal Reserve Act, 12 U.S.C. Section 341. No such pledge or enforcement
thereof shall release such Lender from its obligations under any of the Loan
Documents.

      17-15. Consent or Approval. With respect to any requested amendment,
waiver, consent or other action which requires the approval of the Required
Lenders or all of the Lenders, as the case may be, in accordance with the terms
of this Agreement, or if Administrative Agent is required hereunder to seek, or
desires to seek, the approval of the Required Lenders or all of the Lenders, as
the case may be, prior to undertaking a particular action or course of conduct,
the Administrative Agent in each such case shall provide each Lender with
written notice of any such request for amendment, waiver or consent or any other
requested or proposed action or course of conduct, accompanied by such detailed
background information and explanations as may be reasonably necessary to
determine whether to approve or disapprove such amendment, waiver, consent or
other action or course of conduct. Each Lender shall endeavor to promptly
respond to any such request.

      17-16. Treatment of Confidential Information. Each of the Lenders and the
Agents agrees to maintain the confidentiality of the Confidential Information
(as defined below), except that Confidential Information may be disclosed:

            (a) to its officers, directors, employees and representatives and
      only on a "need to know" basis (it being understood that the Persons to
      whom such disclosure is made will be informed of the confidential nature
      of such Confidential Information and instructed to keep such Confidential
      Information confidential);

            (b) to the extent requested by any regulatory authority purporting
      to have jurisdiction over it;

            (c) to the extent required by applicable laws or regulations or by
      any subpoena or similar legal process;

            (d) in connection with the exercise of any remedies hereunder or
      under any other Loan Document or any action or proceeding relating to this
      Agreement or any other Loan Document or the enforcement of rights
      hereunder or thereunder;

            (e) subject to an agreement containing provisions substantially the
      same as those of this Section, to (i) any assignee of or participant in,
      or any prospective assignee of or participant in, any of its rights or
      obligations under this Agreement or (ii) any actual

                                      -84-
<PAGE>

      or prospective counterparty (or its advisors) to any swap or derivative
      transaction relating to the any Borrower and its obligations;

            (f) with the prior written consent of the Lead Borrower; or

            (g) to the extent such Information (i) becomes publicly available
      other than as a result of a breach of this Section or (ii) becomes
      available to the Administrative Agent or any Lender on a non-confidential
      basis from a source other than the Borrowers.

      For purposes of this Section, "Confidential Information" means all
information received from any of Borrowers or any subsidiary relating to any
Borrower or any Subsidiary or any of their respective businesses, other than any
such information that is available to Administrative Agent or any Lender on a
non-confidential basis prior to disclosure by any Borrower or any Subsidiary,
provided, however, that, in the case of Confidential Information received from
any Borrower or any Subsidiary after the date hereof, such Confidential
Information is clearly identified at the time of delivery as confidential. Any
Person required to maintain the confidentiality of any Confidential Information
as provided in this Section shall be considered to have complied with its
obligation to do so if such Person has exercised the same degree of care to
maintain the confidentiality of such Confidential Information as such Person
would accord to its own confidential information but no less than a reasonable
standard of care.

      17-17. Consents, Amendments, Waivers, etc.

            (a) Except as otherwise expressly set forth in any particular
provision of this Agreement, any consent or approval required or permitted by
this Agreement to be given by the Administrative Agent or the Lenders may be
given, and any term of this Agreement or of any other instrument related hereto
or mentioned herein may be amended, and the performance or observance by the
Borrowers of any terms of this Agreement or such other instrument or the
continuance of any Event of Default may be waived (either generally or in a
particular instance and either retroactively or prospectively) by the
Administrative Agent or the Required Lenders, as applicable, in their
discretion. Each such consent, amendment or waiver shall be in writing. No
waiver shall extend to or affect any obligation not expressly waived or impair
any right consequent thereon. No course of dealing or delay or omission on the
part of the Administrative Agent or any Lender in exercising any right shall
operate as a waiver thereof or otherwise be prejudicial thereto. No Loan made by
the Administrative Agent hereunder during the continuance of any Suspension
Event or Event of Default shall constitute a waiver thereof. No notice to or
demand upon the Borrowers shall entitle the Borrower to other or further notice
or demand in similar or other circumstances.

            (b) Notwithstanding anything to the contrary contained in this
Agreement, any provisions of this Agreement pertaining to the administration of
the Loans by the Lenders may be amended by an instrument in writing signed by
the Administrative Agent and the Required Lenders with no additional consent
required from the Borrowers.

                                      -85-
<PAGE>

            (c) Notwithstanding the foregoing, the unanimous written approval of
all the Lenders (other than a Delinquent Lender) shall be required with respect
to any proposed amendment, waiver, discharge, termination, or consent which:

                  (i) has the effect of except as provided herein (a) extending
      any Maturity Date or the date of any amortization payment of any Note, (b)
      reducing the interest rate, extending the time of payment, or changing the
      manner of calculation, of interest or fees thereon, (c) increasing or
      reducing the principal amount thereof, or (d) otherwise postponing or
      forgiving any Indebtedness thereunder,

                  (ii) releases or discharges any material portion of any
      Collateral now existing or hereafter granted in accordance with the
      Security Documents, other than in accordance with the express provisions
      of the Loan Documents,

                  (iii) changes the definition of Required Lenders or reduces
      the percentages specified in the definition of Required Lenders,

                  (iv) except as otherwise provided in this Agreement, change
      the amount of any Lender's Commitment or Commitment Percentage,

                  (v) releases or waives any guaranty of the Liabilities or
      indemnifications provided in the Loan Documents,

                  (vi) changes to the definition of Collateral Release Event,
      Assignment of Claims Compliance Event, Consolidated Operating Cash Flow,
      Consolidated Total Net Worth, Consolidated Total Funded Indebtedness,
      EBITDA, Net Income, Permitted Acquisition or Total Debt Service;

                  (vii) amends, modifies or waives any provisions of this
      paragraph, or

                  (viii) amends, modifies or waives any term or condition of
      Sections 5-2, 5-3, 7-6, 7-19(o), 7-21(c),7-22, 7-29, 7-2211-7, 11-8, 11-9
      or 11-10.

            (d) Without the consent of the subject Agent, no such action shall
amend, modify or waive any provision of any Loan Document which relates to the
rights or obligations of the specific Agent.

      17-18. U.S. Patriot Act.Each Lender hereby notifies the Borrowers that
pursuant to the requirements of the USA PATRIOT Act (Title III of Pub. L. 107-56
(signed into law October 26, 2001)) (the "Act"), it is required to obtain,
verify and record information that identifies the Borrowers, which information
includes the name and address of each Borrower and other information that will
allow such Lender to identify such Borrower in accordance with the Act.

      17-19. Foreign Asset Control Regulations.Neither of the advance of the
Revolving Credit Loans nor the use of the proceeds of any thereof (or any other
Loan) will violate the Trading With the Enemy Act (50 U.S.C. Section 1 et seq.,
as amended) (the "Trading With the Enemy Act") or any of the foreign assets
control regulations of the United States Treasury Department (31 CFR, Subtitle
B, Chapter V, as amended) (the "Foreign Assets Control Regulations") or any
enabling

                                      -86-
<PAGE>

legislation or executive order relating thereto (which for the avoidance of
doubt shall include, but shall not be limited to (a) Executive Order 13224 of
September 21, 2001 Blocking Property and Prohibiting Transactions With Persons
Who Commit, Threaten to Commit, or Support Terrorism (66 Fed. Reg. 49079 (2001))
(the "Executive Order") and (b) the Uniting and Strengthening America by
Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act of
2001 (Public Law 107-56)). Furthermore, none of the Borrowers or their
Affiliates (a) is or will become a "blocked person" as described in the
Executive Order, the Trading With the Enemy Act or the Foreign Assets Control
Regulations or (b) engages or will engage in any dealings or transactions, or be
otherwise associated, with any such "blocked person".

                  {REMAINDER OF PAGE LEFT INTENTIONALLY BLANK}

                                      -87-
<PAGE>

      IN WITNESS WHEREOF, THE PARTIES HAVE EXECUTED THIS LOAN AND SECURITY
AGREEMENT AS AN INSTRUMENT UNDER SEAL AS OF THE DATE FIRST WRITTEN ABOVE.

                                                DYNAMICS RESEARCH CORPORATION
                                                         ("LEAD BORROWER")

                                                By______________________________
                                                Name:___________________________
                                                Title:__________________________

                                                DRC INTERNATIONAL CORPORATION
                                                      ("BORROWER")

                                                By______________________________
                                                Name:___________________________
                                                Title:__________________________

                                                H.J. FORD ASSOCIATES, INC.
                                                      ("BORROWER")

                                                By______________________________
                                                Name:___________________________
                                                Title:__________________________

                                      -88-
<PAGE>

                                                ANDRULIS CORPORATION
                                                      ("BORROWER")

                                                By______________________________
                                                Name:___________________________
                                                Title:__________________________

                                                IMPACT INNOVATIONS GROUP LLC
                                                      ("BORROWER")

                                                By______________________________
                                                Name:___________________________
                                                Title:__________________________

                                                BROWN BROTHERS HARRIMAN & CO.
                                                      ("ADMINISTRATIVE AGENT AND
                                                      LENDER")

                                                By______________________________
                                                Name:___________________________
                                                Title:__________________________

                                                BANKNORTH, N.A.
                                                      ("DOCUMENTATION AGENT AND
                                                      LENDER")

                                                By______________________________
                                                Name:___________________________
                                                Title:__________________________

                                                KEYBANK NATIONAL ASSOCIATION
                                                      ("CO-SYNDICATION AGENT AND
                                                      LENDER")

                                                By______________________________
                                                Name:___________________________
                                                Title:__________________________

                                      -89-
<PAGE>

                                                FLEET NATIONAL BANK,
                                                A BANK OF AMERICA COMPANY
                                                      ("CO-SYNDICATION AGENT AND
                                                      LENDER")

                                                By______________________________
                                                Name:___________________________
                                                Title:__________________________

                                      -90-
<PAGE>

                                    EXHIBITS

      The following Exhibits to this Amended and Restated Loan Agreement are
respectively described in the section indicated.

<TABLE>
<S>               <C>                                           <C>
EXHIBIT 1         Commitments/Commitment Percentages            Article

EXHIBIT 3-7:      Revolving Credit Note                         Section 3-7

EXHIBIT 3-10:     Renewal/Conversion Notice                     Section 3-10

EXHIBIT 4-1:      Term Note                                     Section 4-1

EXHIBIT 4-2:      Acquisition Term Note                         Section 4-2

EXHIBIT 6-17:     Material Changes                              Section 6-17

EXHIBIT 7-2:      Related Entity                                Section 7-2(b)

EXHIBIT 7-5:      Locations                                     Section 7-5

EXHIBIT 7-6:      Permitted Liens                               Section 7-6

EXHIBIT 7-7:      Indebtedness                                  Section 7-7

EXHIBIT 7-8       Insurance Policies                            Section 7-8

EXHIBIT 7-9:      Licenses, Distributor Franchise Agreement     Section 7-9

EXHIBIT 7-10:     Leases                                        Section 7-10

EXHIBIT 7-11:     Legal Requirements                            Section 7-11

EXHIBIT 7-13:     Taxes                                         Section 7-13

EXHIBIT 7-16:     Hazardous Materials                           Section 7-16

EXHIBIT 7-17:     Litigation                                    Section 7-17

EXHIBIT 7-19:     Guaranties and Investments                    Section 7-19

EXHIBIT 7-28:     Government Contracts                          Section 7-28

EXHIBIT 11-4C:    Compliance Certificate                        Section 11-4

EXHIBIT AA:       Assignment and Acceptance                     Section 17-13

EXHIBIT BB:       Existing L/Cs                                 Article 1
</TABLE>

                                      -91-<PAGE>
                                                                    EXHIBIT 10.2

                            MASTER UNLIMITED GUARANTY

         MASTER UNLIMITED GUARANTY, ("Guaranty") dated as of September 1, 2004
by each of DYNAMICS RESEARCH CORPORATION, a Massachusetts corporation, DRC
INTERNATIONAL CORPORATION, a Massachusetts corporation, H.J. FORD ASSOCIATES,
INC., a Delaware corporation, ANDRULIS CORPORATION, a Delaware corporation, and
IMPACT INNOVATIONS GROUP LLC, a Delaware limited liability company (hereinafter,
singly a "Guarantor" and collectively, the "Guarantors"), in favor of BROWN
BROTHERS HARRIMAN & CO., a New York general partnership with offices at 40 Water
Street, Boston, Massachusetts, for itself and as Administrative Agent (the
"Agent") for each of the Lenders (defined below) which are and which may become
parties to the Loan Agreement (defined below). All capitalized terms used
herein, and not otherwise defined herein, shall have the meanings set forth in
the Loan Agreement. In consideration of the Agent's and the Lenders' giving, in
their discretion, credit or banking facilities or accommodations to each of
those persons described on Exhibit A annexed hereto and incorporated herein by
reference (each such person, together with its successors, individually a
"Customer" and collectively, the "Customers"), each Guarantor jointly and
severally agrees as follows:

1.       GUARANTY OF PAYMENT AND PERFORMANCE. Each Guarantor, jointly and
         severally hereby guarantees to the Agent and each Lender the full and
         punctual payment when due (whether at maturity, by acceleration or
         otherwise), and the performance, of all Liabilities of any Customer to
         the Agent or to any Lender in connection with that certain Second
         Amended and Restated Loan Agreement dated as of even date herewith (as
         same may be amended, modified or replaced, the "Loan Agreement"), made
         by and among the Customers, the Agent, Banknorth, N.A., as
         Documentation Agent, KeyBank National Association and Fleet National
         Bank, a Bank of America company, each as Co-Syndication Agents, and
         each of Brown Brothers Harriman & Co., Banknorth, N.A., KeyBank
         National Association and Fleet National Bank, a Bank of America
         company, as lenders, and such other lenders which may hereafter become
         parties to the Loan Agreement (each a "Lender" and collectively, the
         "Lenders"). This Guaranty is an absolute, unconditional and continuing
         guaranty of the full and punctual payment and performance of the
         Liabilities and not of their collectibility only and is in no way
         conditioned upon any requirement that the Agent first attempt to
         collect any of the Liabilities from any Customer or resort to any
         security or other means of obtaining their payment. Upon the occurrence
         and continuance of any Event of Default, the obligations of the
         Guarantor hereunder shall become immediately due and payable to the
         Agent and the Lenders, without demand or notice of any nature, all of
         which are expressly waived by each Guarantor. Payments by any Guarantor
         hereunder may be required by the Agent on any number of occasions.

2.       GUARANTORS' AGREEMENT TO PAY. Each Guarantor further agrees, as the
         principal obligor and not as a guarantor only, to pay to the Agent for
         the ratable benefit of

                                     - 1 -

<PAGE>

         the Lenders, on demand, all costs and expenses (including court costs
         and legal expenses) incurred or expended by the Agent in connection
         with the Liabilities, this Guaranty and the enforcement thereof,
         together with interest on amounts recoverable under this Guaranty from
         the time such amounts become due until payment, at the rate per annum
         equal to the default rate set forth in the Loan Agreement applicable to
         the Liabilities after the occurrence and continuance of any Event of
         Default; provided that if such interest exceeds the maximum amount
         permitted to be paid under applicable law, then such interest shall be
         reduced to such maximum permitted amount.

3.       UNLIMITED GUARANTY. The liability of the Guarantor hereunder shall be
         unlimited.

4.       WAIVERS BY GUARANTORS; AGENT'S FREEDOM TO ACT. Each Guarantor agrees
         that the Liabilities will be paid and performed strictly in accordance
         with their respective terms regardless of any law, regulation or order
         now or hereafter in effect in any jurisdiction affecting any of such
         terms or the rights of the Agent with respect thereto. Each Guarantor
         waives presentment, demand, protest, notice of acceptance, notice of
         Liabilities incurred and all other notices of any kind, all defenses
         which may be available by virtue of any valuation, stay, moratorium law
         or other similar law now or hereafter in effect, any right to require
         the marshalling of assets of the Customers, and all suretyship defenses
         generally. Without limiting the generality of the foregoing, each
         Guarantor agrees to the provisions of any instrument evidencing,
         securing or otherwise executed in connection with any Liability and
         agrees that the obligations of the Guarantors hereunder shall not be
         released or discharged, in whole or in part, or otherwise affected by
         (i) the failure of the Agent to assert any claim or demand or to
         enforce any right or remedy against any Customer; (ii) any extensions
         or renewals of any Liability; (iii) any rescissions, waivers,
         amendments or modifications of any of the terms or provisions of any
         agreement evidencing, securing or otherwise executed in connection with
         any Liability; (iv) the substitution or release of any entity primarily
         or secondarily liable for any Liability; (v) the adequacy of any rights
         the Agent or any Lender may have against any collateral or other means
         of obtaining repayment of the Liabilities; (vi) the impairment of any
         collateral securing the Liabilities, including without limitation the
         failure to perfect or preserve any rights the Agent might have in such
         collateral or the substitution, exchange, surrender, release, loss or
         destruction of any such collateral; or (vii) any other act or omission
         which might in any manner or to any extent vary the risk of the
         Guarantor or otherwise operate as a release or discharge of the
         Guarantor, all of which may be done without notice to the Guarantor.

5.       UNENFORCEABILITY OF OBLIGATIONS AGAINST CUSTOMERS. If for any reason
         any Customer has no legal existence or is under no legal obligation to
         discharge any of the Liabilities, or if any of the Liabilities have
         become irrecoverable from any Customer by operation of law or for any
         other reason, this Guaranty shall nevertheless be binding on the
         Guarantors to the same extent as if the Guarantors at all times had
         been the principal obligor on all such Liabilities. In the event that
         acceleration of the time for

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<PAGE>

         payment of the Liabilities is stayed upon the insolvency, bankruptcy or
         reorganization of any Customer, or for any other reason, all such
         amounts otherwise subject to acceleration under the terms of any
         agreement evidencing, securing or otherwise executed in connection with
         any Liability shall be immediately due and payable by the Guarantors.

6.       SUBROGATION; SUBORDINATION. No Guarantor shall exercise any rights
         against any Customer or any other Guarantor arising as a result of
         payment by any Guarantor hereunder, by way of subrogation or otherwise,
         and will not prove any claim in competition with the Agent or any
         Lender or its affiliates in respect of any payment hereunder in
         bankruptcy or insolvency proceedings of any nature; no Guarantor will
         claim any set-off or counterclaim against any Customer in respect of
         any liability of the Guarantors to any Customer or any other Guarantor;
         and each Guarantor waives (until the Agent and each Lender is paid in
         full) any benefit of and any right to participate in any collateral
         which may be held by the Agent or any such affiliate. The payment of
         any amounts due with respect to any indebtedness of any Customer now or
         hereafter held by any Guarantor is hereby subordinated to the prior
         payment in full of the Liabilities, provided that so long as no default
         in the payment or performance of the Liabilities has occurred and is
         continuing, or no demand for payment of any of the Liabilities has been
         made that remains unsatisfied, the Customers may make and the
         Guarantors may receive payments or performance of any obligations to
         Guarantors which are permitted under the Loan Agreement. Each Guarantor
         agrees that after the occurrence and during the continuance of any
         default in the payment or performance of the Liabilities, no Guarantor
         will demand, sue for or otherwise attempt to collect any such
         indebtedness of any Customer to any Guarantor until the Liabilities
         shall have been paid in full. If, notwithstanding the foregoing
         sentence, any Guarantor shall collect, enforce or receive any amounts
         in respect of such indebtedness, such amounts shall be collected,
         enforced and received by such Guarantor as trustee for the Agent and be
         paid over to the Agent on account of the Liabilities without affecting
         in any manner the liability of such Guarantor under the other
         provisions of this Guaranty.

7.       SECURITY; SET-OFF. Regardless of the adequacy of any Collateral, during
         the continuance of any Event of Default, any deposits (general or
         specific, time or demand, provisional or final, regardless of currency,
         maturity, or the branch of where such deposits are held) or other sums
         credited by or due from any of the Lenders to any of the Guarantors and
         any securities or other property of the Guarantors in the possession of
         such Lender may be applied to or set off against the payment of
         Liabilities and any and all other liabilities, direct, or indirect,
         absolute or contingent, due or to become due, now existing or hereafter
         arising, of the Guarantors to the Lenders. Each Lender, by its
         acceptance of this Guaranty, hereby agrees that any payment received by
         Lender hereunder shall be subject to the terms and conditions set forth
         in Section 16-12 of the Loan Agreement.

                                     - 3 -

<PAGE>

8.       FURTHER ASSURANCES. Each Guarantor also agrees to do all such things
         and execute all such documents, including financing statements, as the
         Agent may consider necessary or desirable to give full effect to this
         Guaranty and to perfect and preserve the rights and powers of the Agent
         hereunder. In addition, each Guarantor agrees that it will not incur
         any indebtedness, other than any indebtedness permitted under the Loan
         Agreement.

9.       TERMINATION; REINSTATEMENT. This Guaranty shall remain in full force
         and effect until the Agent is given written notice of the Guarantors'
         intention to discontinue this Guaranty, notwithstanding any
         intermediate or temporary payment or settlement of the whole or any
         part of the Liabilities. No such notice shall be effective unless
         received and acknowledged by an officer of the Agent at the address
         provided for in Article 14 of the Loan Agreement. No such notice shall
         affect any rights of the Agent or any Lender or of any affiliate
         hereunder including, without limitation, the rights set forth in
         Sections 4 and 6, with respect to Liabilities incurred prior to the
         receipt of such notice or Liabilities incurred pursuant to any contract
         or commitment in existence prior to such receipt, and all checks,
         drafts, notes, instruments (negotiable or otherwise) and writings made
         by or for the account of the Customers and drawn on the Agent or any
         Lender or any of their agents purporting to be dated on or before the
         date of receipt of such notice, although presented to and paid or
         accepted by the Agent or such Lender after that date, shall form part
         of the Liabilities. This Guaranty shall continue to be effective or be
         reinstated, notwithstanding any such notice, if at any time, any
         payment made or value received with respect to a Liability is rescinded
         or must otherwise be returned by the Agent or any Lender upon the
         insolvency, bankruptcy or reorganization of any Customer, or otherwise,
         all as though such payment had not been made or value received.

10.      SUCCESSORS AND ASSIGNS. This Guaranty shall be binding upon each
         Guarantor, its respective successors and assigns, and shall inure to
         the benefit of and be enforceable by the Agent and its successors,
         transferees and assigns. Without limiting the generality of the
         foregoing sentence, (i) the Agent or any Lender may, to the extent
         permitted by such agreement or note, assign or otherwise transfer any
         agreement or any note held by it evidencing, securing or otherwise
         executed in connection with the Liabilities, or sell participations in
         any interest therein, to any other person or entity, and (ii) such
         other person or entity shall thereupon become vested, to the extent set
         forth in the agreement evidencing such assignment, transfer or
         participation, with all the rights in respect thereof granted to the
         Agent and such Lender herein.

11.      AMENDMENTS AND WAIVERS. No amendment or waiver of any provision of this
         Guaranty nor consent to any departure by any Guarantor therefrom shall
         be effective unless the same shall be in writing and signed by the
         Agent pursuant to the provisions of the Loan Agreement. No failure on
         the part of the Agent to exercise, and no delay in exercising, any
         right hereunder shall operate as a waiver thereof; nor shall any single
         or

                                     - 4 -

<PAGE>

         partial exercise of any right hereunder preclude any other or further
         exercise thereof or the exercise of any other right.

12.      NOTICES. All notices and other communications called for hereunder
         shall be made in writing and, unless otherwise specifically provided
         herein, shall be deemed to have been duly made or given when delivered
         by in accordance with the provisions of Article 14 of the Loan
         Agreement.

13.      GOVERNING LAW; CONSENT TO JURISDICTION. This Guaranty is intended to
         take effect as a sealed instrument and shall be governed by, and
         construed in accordance with, the laws of The Commonwealth of
         Massachusetts. Each Guarantor agrees that any suit for the enforcement
         of this Guaranty may be brought in the courts of The Commonwealth of
         Massachusetts or any Federal Court sitting therein, consents to the
         non-exclusive jurisdiction of such court and agrees that a summons and
         complaint commencing an action or proceeding in any such court shall be
         properly served and shall confer personal jurisdiction if served
         personally or by certified mail to such Guarantor at its address
         provided in Article 14 of the Loan Agreement or as otherwise provided
         under the laws of The Commonwealth of Massachusetts. Each Guarantor
         hereby waives any objection that it may now or hereafter have to the
         venue of any such suit or any such court or that such suit was brought
         in an inconvenient court.

14.      MISCELLANEOUS. This Guaranty constitutes the entire agreement of the
         Guarantors with respect to the matters set forth herein. The rights and
         remedies herein provided are cumulative and not exclusive of any
         remedies provided by law or any other agreement, and this Guaranty
         shall be in addition to any other guaranty of the Liabilities. The
         invalidity or unenforceability of any one or more sections of this
         Guaranty shall not affect the validity or enforceability of its
         remaining provisions. Captions are for the ease of reference only and
         shall not affect the meaning of the relevant provisions. The meanings
         of all defined terms used in this Guaranty shall be equally applicable
         to the singular and plural forms of the terms defined.

15.      JURY WAIVER. THE AGENT (BY ITS ACCEPTANCE HEREOF) AND EACH GUARANTOR
         AGREE THAT NONE OF THEM, INCLUDING ANY ASSIGNEE OR SUCCESSOR SHALL SEEK
         A JURY TRIAL IN ANY LAWSUIT, PROCEEDING, COUNTERCLAIM, OR ANY OTHER
         LITIGATION PROCEDURE BASED UPON, OR ARISING OUT OF, THIS GUARANTY, ANY
         RELATED INSTRUMENTS, ANY COLLATERAL OR THE DEALINGS OR THE RELATIONSHIP
         BETWEEN OR AMONG ANY OF THEM. NEITHER THE AGENT NOR ANY GUARANTOR SHALL
         SEEK TO CONSOLIDATE ANY SUCH ACTION WITH ANY OTHER ACTION IN WHICH A
         JURY TRIAL CANNOT BE OR HAS NOT BEEN WAIVED. THE PROVISIONS OF THIS
         PARAGRAPH HAVE BEEN FULLY DISCUSSED BY THE AGENT AND THE GUARANTORS,
         AND THESE PROVISIONS SHALL BE SUBJECT TO NO EXCEPTIONS. NEITHER THE
         AGENT NOR ANY

                                     - 5 -

<PAGE>

         GUARANTOR HAS AGREED WITH OR REPRESENTED TO THE OTHER THAT THE
         PROVISIONS OF THIS PARAGRAPH WILL NOT BE FULLY ENFORCED IN ALL
         INSTANCES.

16.      AMENDED AND RESTATED GUARANTY. This Guaranty amends and restates any
         Guaranty executed and delivered previously by any Guarantor in
         connection with the Existing Loan Agreement.

                  [remainder of page left intentionally blank]

                                     - 6 -

<PAGE>

         IN WITNESS WHEREOF, each Guarantor has executed and delivered this
Guaranty, or caused this Guaranty to be executed and delivered by its duly
authorized officer, as of the date appearing on page one.

                                                  DYNAMICS RESEARCH CORPORATION
WITNESS (as to all):

_________________________                         By____________________________
                                                  Name:_________________________
                                                  Title:________________________

                                                  DRC INTERNATIONAL CORPORATION

                                                  By____________________________
                                                  Name:_________________________
                                                  Title:________________________

                                                  H.J. FORD ASSOCIATES, INC.

                                                  By____________________________
                                                  Name:_________________________
                                                  Title:________________________

                                                  ANDRULIS CORPORATION

                                                  By____________________________
                                                  Name:_________________________
                                                  Title:________________________

                                                  IMPACT INNOVATIONS GROUP LLC

                                                  By____________________________
                                                  Name:_________________________
                                                  Title:________________________

                                     - 7 -

<PAGE>

                                     Annex A

           DYNAMICS RESEARCH CORPORATION, a Massachusetts corporation,

           DRC INTERNATIONAL CORPORATION, a Massachusetts corporation,

               H.J. FORD ASSOCIATES, INC., a Delaware corporation,

                ANDRULIS CORPORATION, a Delaware corporation, and

       IMPACT INNOVATIONS GROUP LLC, a Delaware limited liability company

                                     - 8 -

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