|   | 1. | Commitments. |
|--------|----|--------------|

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|   | 2. | Syndication. |
|--------|----|--------------|

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|   | 3. | Information. |
|--------|----|--------------|

|   | 4. | Compensation. |
|--------|----|---------------|

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|   | 5. | Conditions. |
|--------|----|-------------|

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|   | 6. | Indemnity and Expenses. |
|--------|----|-------------------------|

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|   | 7. | Confidentiality. |
|--------|----|------------------|

|   | 8. | Termination. |
|--------|----|--------------|

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|   | 9. | Governing Law, Etc. |
|--------|----|---------------------|

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|   | 10. | Public Announcements. |
|--------|-----|-----------------------|

|   | 11. | Patriot Act. |
|--------|-----|--------------|

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|   | By:    | /s/ Mitchell Goldstein |   |
|--------|--------|-----------------------------|--------|
|   | Name:  | Mitchell Goldstein          |   |
|   | Title: | Authorized Signatory        |   |
|   |   |                        |   |

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| By |   |
|----|--------|

|   | Name: |
|--------|-------|

|   | Title: |
|--------|--------|

| By:                 | /s/ David Keleher                            |   |
|---------------------|---------------------------------------------------|--------|
|    Name:  | David Keleher                                     |   |
|    Title: | Senior Vice President and Chief Financial Officer |   |
|                |                                              |   |

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| Borrower:                     | Dynamics Research Corporation (the “Company” or “Borrower”).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|-------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| Guarantors:                   | The Senior Credit Facility (as defined below) will be guaranteed by all existing and future direct and indirect domestic subsidiaries of the Company, the Target, and their subsidiaries (including, without limitation, the domestic subsidiary (“MergerCo”) of the Company to be organized and merged with and  into the Target in connection with the Acquisition), and, to the extent no material adverse tax consequences would result, foreign subsidiaries of the Company (collectively, the “Guarantors”).  The Borrower and the Guarantors are sometimes referred to as “Obligors”. |
|                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| Administrative Agent:         | Ares Capital Corporation (“ARCC”) will act as sole and exclusive administrative agent (in such capacity, the “Administrative Agent”).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| Collateral Agent:             | ARCC will act as sole and exclusive collateral agent (in such capacity, the “Collateral Agent ”; the Administrative Agent and the Collateral Agent are collectively referred to as the “Agents”).                                                                                                                                                                                                                                                                                                                                                                                                                            |
|                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| Lead Arranger and Bookrunner: | ARCC will act as sole and exclusive lead arranger and sole and exclusive bookrunner (in such capacity, the “Lead Arranger”).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
|                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| Lenders:                      | A syndicate of financial institutions and other entities (including ARCC) acceptable to the Lead Arranger and selected by the Lead Arranger in consultation with the Borrower (the “Lenders”).                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| Senior Credit Facility:       | An aggregate principal amount of up to $130.0 million will be available to the Borrower upon the terms and conditions hereinafter set forth: Revolving Credit Facility:  A revolving credit facility (the “Revolving Credit Facility”) in an aggregate principal amount not to exceed $20.0 million (the “Revolving Credit Commitment”), including a sub-limit for letters of credit in an amount of up to                                                                                                                                                                                                    |

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|             | $10.0 million and on customary terms. Term Loan Facility:  A term loan facility in an aggregate principal amount of up to $110.0 million (the “Term Loan Facility”). The Revolving Credit Facility and the Term Loan Facility are collectively referred to herein as the “Senior Credit Facility”.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
|------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| Use of Proceeds: | Revolving Credit Facility:  The Revolving Credit Facility will be used for working capital and general corporate purposes of the Company and its subsidiaries.  The Revolving Credit Facility will be unfunded on the Closing Date. Term Loan Facility:  The Term Loan Facility will be used to (a) finance the Acquisition, (b) refinance any existing debt of the Company and the Target, and (c) pay fees and expenses incurred in connection with the Transactions in an amount not to exceed $8.0 million.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
|             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| Closing Date:    | The first date on which (a) the Senior Definitive Documentation is executed by the Obligors, the Lenders and other third parties relevant to the Transactions, (b) the initial loans under the Senior Credit Facility have been made, and (c) all applicable conditions precedent are satisfied (the “Closing Date”).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| Availability:    | Revolving Credit Facility:  At no time shall the sum of the aggregate principal amount of outstanding loans and (if applicable) letters of credit under the Revolving Credit Facility exceed the Revolving Credit Commitment. Term Loan Facility: To be fully drawn on the Closing Date. Amounts repaid cannot be reborrowed.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| Maturity:        | Revolving Credit Facility:  Five years from the Closing Date. Term Loan Facility: Five years from the Closing Date.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
|             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| Amortization:    | Revolving Credit Facility:  None prior to maturity. Term Loan Facility:  Quarterly amortization as follows:Year 1:                                $1.25 million per quarterYear 2:                                $1.875 million per quarterYear 3:                                $2.50 million per quarterYear 4:                                $3.125 million per quarterYear 5:                                $5.0 million for the first three quartersMaturity Date:                  Remaining outstanding and unpaid principal |

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|            |              balance of the Term Loan Facility                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|-----------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| Interest Rates: | Base Rate and LIBOR Options:  At the Borrower’s option, each loan under the Senior Credit Facility will bear interest at a rate per annum equal to the Applicable Margin (as defined below), plus one of the following indexes: (a) LIBOR and (b) the Base Rate. “LIBOR” shall be defined as the higher of (i)(A) the rate of interest which is identified and normally published by Bloomberg Professional Service Page BBAM 1 as the offered rate for loans in United States dollars for the applicable interest period under the caption British Bankers Association Eurodollar Rates as of 11:00 a.m. (London time), on the second full business day next preceding the first day of such interest period multipliedby (B) the Statutory Reserve Rate, and (ii)  1.00% per annum. The “Statutory Reserve Rate” shall be defined as a fraction (expressed as a decimal), the numerator of which is the number one and the denominator of which is the number one minus the aggregate of the maximum reserve percentages that are in effect on that day (including any marginal, special, emergency or supplemental reserves), expressed as a decimal, as prescribed by the Board of Governors of the Federal Reserve System of the United States (or any successor) and to which the Administrative Agent is subject, for eurocurrency funding (currently referred to as “Eurocurrency Liabilities” in Regulation D). The “Base Rate” shall be defined as the highest of (i) the prime rate (as determined by reference to the Wall Street Journal), (ii) the federal funds rate plus 0.50% and (iii) LIBOR (as defined above) for an interest period of one month plus 1.00% per annum. Applicable Margins:  The “Applicable Margins” for the Senior Credit Facility shall be as set forth below: Revolving Credit Facility:                 LIBOR + 4.25%                                                                Base Rate + 3.25% Term LoanFacility:                             LIBOR + 4.25%Base Rate + 3.25% provided, that, at any time after the first anniversary of the Closing Date, if Consolidated Senior Leverage Ratio (as defined below) is less than 1.50:1.00 as of the end of any fiscal quarter, the “Applicable Margins” shall be as set forth below for the immediately succeeding fiscal quarter: Revolving Credit Facility:                  LIBOR + 3.75% |

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|                                                   |                                                                  Base Rate + 2.75% Term LoanFacility:                             LIBOR + 3.75%Base Rate + 2.75% Interest periods for LIBOR loans shall be for one, two, three or six months, as selected by the Borrower.  Interest on all LIBOR loans will be paid at the end of each interest period or, in the case of any interest period in excess of three months, on each date occurring at three-month intervals after the first day of such interest period.  Interest on all Base Rate loans will be paid quarterly on the last day of each calendar quarter. If any event of default shall have occurred and be continuing, all loans and other obligations under the Senior Credit Facility shall bear interest at a rate per annum equal to 2.00% in excess of the otherwise highest applicable interest rate (including the Applicable Margin). |
|--------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Commitment Fees:                                       | Commitment fees of 0.50% per annum on the unused commitments under the Revolving Credit Facility shall be payable to the Administrative Agent, for the account of the Lenders under the Revolving Credit Facility, from and after the Closing Date.  Accrued commitment fees will be payable quarterly in arrears, on the last day of each calendar quarter.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
|                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Optional Prepayments of the Revolving Credit Facility: | The principal amount of advances under the Revolving Credit Facility may be prepaid without premium or penalty, on same day notice for Base Rate advances and 2 business days’ notice for LIBOR advances, in minimum amounts to be agreed.  The Borrower will bear all customary breakage costs related to the prepayment of a LIBOR advance prior to the last day of an interest period.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Optional Prepayments of the Term Loan Facility:        | The principal amount of loans under the Term Loan Facility may be prepaid, at the option of the Borrower, in whole or in part, with minimum notice periods and in minimum amounts to be mutually agreed. Optional prepayments may be applied to the Term Loans or the Revolving Credit Facility at the direction of the Borrower.  Optional prepayments of the Term Loans will reduce amortization of the Term Loans in inverse order of maturity until paid in full.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Mandatory Prepayments:                                 | The Senior Credit Facility will be prepaid, by an amount equal to: (a)       100% of net cash proceeds of all asset sales and other asset dispositions by any Obligor or any subsidiary of any Obligor                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |

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|   | (including sales of stock of subsidiaries) other than asset sales in the ordinary course of business, with customary exceptions (including the limited option to reinvest certain proceeds) to be mutually agreed; (b)       100% of insurance proceeds received by any Obligor or any subsidiary of any Obligor, with customary exceptions (including the limited option to reinvest certain proceeds) to be mutually agreed; (c)       50% of excess cash flow (definition to be mutually agreed), calculated and paid on an annual basis, of the Company and its subsidiaries commencing with excess cash flow for period starting on the Closing Date and ended December 31, 2012; provided, however, that no such excess cash flow prepayment shall be required for a fiscal year when the Consolidated Senior Leverage Ratio (as defined below) as of the end of such fiscal year is less than 1.50:1.00; (d)      100% of the net proceeds from the issuance by any Obligor or any subsidiary of any Obligor of any public or private indebtedness, except for specified permitted indebtedness to be mutually agreed; (e)       50% of the net proceeds from the issuance by the Company of any equity and 100% of the net proceeds from the issuance by any subsidiary of the Company of any equity; (f)       100% of Net Acquisition Proceeds (definition to be mutually agreed) in cash; and (g)       100% of all outstanding obligations under the Senior Credit Facility upon the occurrence of a Change of Control (definition to be mutually agreed). Mandatory prepayments shall be applied first to the Term Loans (and shall reduce remaining amortization of such loans in inverse order of maturity), until repaid in full.  In the event that the Term Loan Facility has been fully repaid, the mandatory prepayments described above shall be applied to amounts then outstanding (if any) under the Revolving Credit Facility and to cash collateralize outstanding letters of credit, with a corresponding permanent reduction in the Revolving Credit Commitment. Advances under the Revolving Credit Facility will be immediately prepaid and, if no advances are then outstanding, letters of credit will be cash collateralized, in either case to the extent that the aggregate extensions of credit under the Revolving Credit Facility |
|--------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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|                                  | exceed the Revolving Credit Commitment then in effect.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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| Security:                             | The Collateral Agent, for the benefit of the Lenders, the Agents, any issuer of letters of credit (pursuant to the Senior Credit Facility) and any counterparty to any hedging agreement entered into by the Borrower that has been designated as a specified hedging agreement pursuant to the Senior Definitive Documentation for the Senior Credit Facility, reasonably satisfactory to the Collateral Agent, shall receive a perfected first priority security interest in (a) all of the capital stock of each Obligor and its subsidiaries (other than the top-tier Obligor) (which pledge, in the case of any foreign subsidiary, shall be limited to 100% of the nonvoting stock (if any) and 65% of the voting stock of such foreign subsidiary to the extent the pledge of any greater percentage would result in material adverse tax consequences to the Company); and (b) all other existing and future assets and properties of each Obligor including, without limitation, accounts receivable, inventory, real property (fee owned and leasehold), machinery, equipment, contracts, trademarks, copyrights, software, patents, license rights and general intangibles (collectively, the “Collateral”).                                                                                                                                                                                                                                                                                                  |
|                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| Conditions Precedent to Closing Date: | Subject to the Certain Funds Provisions, the initial funding of the Senior Credit Facility will be subject to satisfaction of the conditions precedent set forth in the Commitment Letter, and the following conditions precedent: (a)      The negotiation, execution and delivery of the Senior Definitive Documentation and other customary closing documentation, reasonably satisfactory to the Agents, including, subject to the Certain Funds Provisions, receipt of reasonably satisfactory evidence that the Collateral Agent shall have a valid and perfected first priority lien and security interest in the Collateral. (b)      Since December 31, 2010, there shall not have occurred a Material Adverse Effect (as defined below) with respect to the Obligors (including the Target) taken as a whole.  Material Adverse Effect means a material adverse effect on (i) the business, revenues, operations, condition (financial or otherwise), assets, liabilities (contingent or otherwise), results of operations, properties or prospects of the Obligors (after giving effect to the Transactions), (ii) the ability of any Obligor to perform its obligations under the Senior Definitive Documentation, (iii) the validity or enforceability of the Commitment Letter, the Fee Letter, or the Term Sheets, (iv) the rights and remedies of the Agents and Lenders under the Senior Definitive Documentation, or (v) the priority of any |

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|   | liens granted to Collateral Agent by any Obligor. (c)      No action or proceeding before any court or governmental body shall be pending or, to the knowledge of the Company, threatened, wherein an unfavorable judgment, decree or order would (i) prevent the performance of the Acquisition Agreement or the consummation of any of the Transactions, (ii) declare unlawful any of the Transactions, (iii) reasonably be expected to cause any of the Transactions to be rescinded, or (iv) result in damages owing by ARCC in connection with the consummation of the Transactions other than as a result of a breach by ARCC of its obligations under the Commitment Letter. (d)      The Agents shall have received the following, each in form and substance reasonably satisfactory to Agents: (i) the consolidated unaudited financial statements of the Company and its subsidiaries (other than the Target) for (A) each of the fiscal quarters from the fiscal quarter ending March 31, 2011 to and including the fiscal quarter ending no more than 30 days before the Closing Date and (B) each of the fiscal months from the fiscal month ending April 30, 2011 to and including the fiscal month ending no more than 30 days before the Closing Date, (ii) the consolidated unaudited financial statements of the Target for (A) each of the fiscal quarters from the fiscal quarter ending March 31, 2011 to and including the fiscal quarter ending no more than 30 days before the Closing Date and (B) each of the fiscal months from the fiscal month ending April 30, 2011 to and including the fiscal month ending no more than 30 days before the Closing Date, and (iii) the forecasted financial projections of the Obligors as of the Closing Date for the fiscal years 2011 through 2016 (on a quarter by quarter basis for fiscal years 2011 and 2012 and on an annual basis for fiscal years 2013 through 2016) together with a pro forma balance sheet of the Company and its subsidiaries after giving effect to the Transactions. (e)       The Acquisition shall have been consummated concurrently with the initial funding of the Senior Credit Facility in accordance with (i) applicable law and (ii) the terms of the Acquisition Agreement and the other Definitive Acquisition Documents, each of which shall be reasonably satisfactory to the Agents (it being agreed that the draft Acquisition Agreement dated as of June 2, 2011, together with all exhibits and schedules thereto and other agreements related thereto that have provided to counsel to the Agents by Nixon |
|--------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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|   | Peabody LLP by email at 4:32 pm on June 1, 2011 are reasonably satisfactory to the Agents), or as amended, supplemented, modified or waived; provided, however, that any such amendment, supplement, modification to or waiver of the Acquisition Agreement or the other Definitive Acquisition Documents that could reasonably be expected to be adverse to the interests of the Agents and/or the Lenders, shall require the written consent of Agents, and all conditions precedent to the consummation of the Acquisition set forth in the Acquisition Agreement shall have been satisfied or waived; provided, however, that any such waiver that could reasonably be expected to be adverse to the interests of the Agents and/or the Lenders shall require the written consent of Agents, and the Definitive Acquisition Documents shall be in full force and effect on the Closing Date.  The Acquisition Documents shall have been executed, and the Agents shall have received a certified copy of the executed Acquisition Agreement and the other Definitive Acquisition Documents and all schedules and exhibits thereto. (f)       The Agents shall have received the merger certificate with respect to the merger of the MergerCo with and into Target, with the Target as the surviving corporation (the “Merger”), in form and substance reasonably satisfactory to the Agents and in full force and effect as of the Closing Date, and (ii) subject only to the funding of the initial loans under the Senior Credit Facility and the Senior Subordinated Credit Facility and filing of the merger certificate immediately upon such funding, the Merger shall have been consummated in accordance with applicable laws and in accordance with the terms of the Definitive Acquisition Documents, and in all other respects reasonably satisfactory to the Agents. (g)      The terms, maturity and subordination of any other indebtedness owed by the Target, the Company or any of their subsidiaries to any person as of the Closing Date shall be reasonably satisfactory to the Agents. (h)      The closing of the Senior Subordinated Credit Facility. (i)        The negotiation, execution and delivery of a subordination and intercreditor agreement between the Collateral Agent and the purchasers under the Senior Subordinated Credit Facility, in form and substance reasonably satisfactory to the Agents (the “Intercreditor Agreement”) or the inclusion of such subordination provisions in the Senior Subordinated |
|--------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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|   | Definitive Documentation. (j)       The Agents shall have received executed legal opinions, in form and substance reasonably satisfactory to the Agents of (i) counsel to the Obligors, (ii) such local counsel to the Obligors as may be required by the Agents and (iii) to the extent delivered to the Company, counsel to the sellers in connection with the Definitive Acquisition Documents. (k)      The applicable waiting periods, if any, under the Hart-Scott-Rodino Act shall have expired or been terminated and all other governmental and third party consents that are required for the consummation of the Transactions shall have been obtained and shall be final and non-appealable. (l)       The Agents shall have received certificates from the secretary or similar officer of each of the Obligors party to the Senior Definitive Documentation certifying as to the following: corporate authority, authorization of specific officers, incumbency and specimen signatures of such officers and certificates of status (including certified copies of the formation documents issued by the jurisdictions of organization of each such person and governing documents), all in form and substance reasonably satisfactory to the Agents. (m)      The Agents shall have received a certificate of a senior financial officer of the Company, in form and substance reasonably satisfactory to the Agents, (i) confirming the solvency of the Obligors and their subsidiaries after giving effect to the Transactions, (ii) certifying as to an attached detailed sources and uses statement and funds flow memorandum for the Transactions, including the payment of all fees, commissions and expenses in connection therewith and (iii) certifying as to an attached organizational chart and a list of officers and directors of each of the Obligors. (n)      The Agents shall have received evidence in form and substance reasonably satisfactory to the Agents that (i) the Consolidated Total Leverage Ratio (definition to be mutually  agreed) of the Company and its subsidiaries on a consolidated basis shall not exceed 4.00:1.00 for the most recent twelve month period ending prior to the Closing Date for which financial statements are available (after giving pro forma effect to the Transactions), (ii) the Consolidated Senior Leverage Ratio (definition to be mutually agreed) of the Company and its subsidiaries on a consolidated basis shall not |
|--------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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|                                    | exceed 3.00:1.00 for the most recent twelve month period ending prior to the Closing Date for which financial statements are available (after giving pro forma effect to the Transactions), and (iii) consolidated EBITDA of the Company and its subsidiaries (including the Target) for the most recent twelve month period ending prior to the Closing Date for which financial statements are available shall not be less than $37.8 million. (o)       The Agents shall have received customary lien searches reflecting no liens other than permitted liens. (p)      The Agents shall have received insurance certificates and endorsements identifying the Collateral Agent as additional insured and loss payee, in form and substance reasonably satisfactory to the Agents. (q)      The Agents shall have received customary executed “payoff letters” and lien terminations reflecting repayment of all indebtedness of the Company and its subsidiaries required to be repaid pursuant to the Definitive Acquisition Documents. (r)       The Agents shall have received, at least 5 days prior to the Closing Date, all documentation and other information required by bank regulatory authorities under applicable “know-your-customer” and anti-money laundering rules and regulations, including the Patriot Act, as well as completed reference checks with respect to senior management of the Obligors and their subsidiaries. (s)       Payment of all fees and out-of-pocket expenses required to be paid on the Closing Date. |
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| Conditions to All Extensions of Credit: | Each extension of credit under the Senior Credit Facility will be subject to customary conditions precedent, including the (a) absence of any default or event of default, (b) subject to the Certain Funds Provisions (with respect to the initial funding of the Senior Credit Facility on the Closing Date), continued accuracy of all representations and warranties in all material respects; provided that such materiality qualifier shall not apply with respect to extensions of credit made on the Closing Date, (c) absence of any injunction, writ, restraining order, or other order restricting or prohibiting such extension of credit and (d) the delivery of a duly executed borrowing notice in form and substance reasonably satisfactory to the Agents and certified by a responsible officer of a Borrower.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |

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| Representations and Warranties: | Subject to the Certain Funds Provisions, representations and warranties will apply to Company and its subsidiaries (including the Target), will be subject to materiality levels and/or exceptions to be mutually agreed and reflected in the Senior Definitive Documentation and will include: due organization; existence and status; corporate (or other) power and authority, enforceability; no violation of law, contracts or organizational documents or imposition of liens; no material litigation or labor controversies; no contractual restrictions on payment of dividends to, and investments in, the Company or any of its subsidiaries, or their ability to perform their obligations under the Senior Definitive Documentation; accuracy and completeness of specified financial statements; projections prepared in good faith upon assumptions believed by the Obligors to be reasonable at the time made; no material adverse change; no required governmental or third party approvals or consents; no judgment, order or injunction with respect to the Transactions; use of proceeds; not engaging in business of purchasing/carrying margin stock; status under Investment Company Act; ERISA matters; environmental matters; tax matters; ownership and location of properties (including leased properties); collective bargaining; insurance matters; intellectual property; material contracts; accuracy and completeness of disclosure; compliance with laws; subsidiaries and joint ventures; no default or event of default; perfected liens, security interests and charges; solvency; evidence of other indebtedness, deposit accounts and securities accounts; absence of undisclosed liabilities; accuracy of representations and warranties in the Definitive Acquisition Documents; and other customary and industry-specific representations and warranties for transactions of this type mutually acceptable to the parties. |
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| Financial Covenants:            | Financial covenants will include Consolidated Senior Leverage Ratio, Consolidated Total Leverage Ratio, Consolidated Fixed Charge Coverage Ratio and Consolidated Capital Expenditures, in each case, to be defined in the Senior Definitive Documentation and with covenant levels to be mutually agreed upon between the Borrower and the Agents.  Each of the ratios referred to above will be calculated on a consolidated basis for the Borrower and its subsidiaries for each consecutive four fiscal quarter period, except that during the first year following the Closing Date such calculations shall be made for the period of time since the Closing Date and, where appropriate, annualized (provided, that, for the avoidance of doubt, EBITDA and Consolidated Capital Expenditures shall not be annualized but will be based on scheduled amounts for the portion of the applicable measurement period occurring prior to the Closing Date).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |

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| Other Covenants:            | Covenants will apply to the Company and its subsidiaries (including the Target), will be subject to materiality levels and/or exceptions to be mutually agreed and reflected in the Senior Definitive Documentation and will include:  delivery of financial statements, budgets and compliance certificates, insurance reports and notices of default under, or amendments of, the documents relating to any of the Transactions, notices of any litigation, governmental proceedings or investigations, ERISA, environmental proceedings and labor controversies, bankruptcy or similar events, management letters from the Company’s independent accountants, changes in accounting or financial reporting practices, fiscal years or fiscal quarters, or changes in corporate information; compliance with laws and contractual obligations; compliance with PATRIOT ACT; payment of taxes and other obligations; preservation of existence; maintenance of books and records and inspection rights; use of proceeds; maintenance of properties; additional guarantees and related security interests from new direct or indirect subsidiaries of the Obligors; control agreements with respect to deposit accounts, securities accounts and other similar accounts; ERISA matters; environmental compliance; further assurances; maintenance of insurance; limitation on indebtedness, liens, granting of negative pledges, mergers, consolidations, sales of assets, change of names, dividends, stock redemptions and other restricted payments, cash payments on any earn-out obligations and the modification, redemption and/or prepayment of other debt; limitation on investments (including loans and advances) and acquisitions subject to a carve-out permitting the Company and its subsidiaries to make Permitted Acquisitions (definition to be mutually agreed); limitation on sale-leasebacks; limitation on transactions with affiliates; limitations on modifications of certain agreements; changes in line of business; limitation on hedging agreements; limitations on the issuance or repurchase of capital stock; and other customary and industry-specific covenants for transactions of this type mutually acceptable to the parties. |
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| Interest Rate Requirements: | The Borrower may be required to enter into hedging arrangements to protect against fluctuations in interest rates with respect to the Term Loan Facility. The maximum amount required to be hedged will be 50% of the outstanding principal amount of the Term Loan Facility.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
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| Events of Default:          | The following (subject to notices, grace periods and threshold to be mutually agreed in the Senior Definitive Documentation):  (a) nonpayment of principal, interest, fees or other amounts; (b) any representation or warranty being incorrect when made or confirmed; (c) failure to perform or observe covenants set forth in the Senior Definitive Documentation; (d) cross-default to other                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |

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|                            | indebtedness; (e) bankruptcy and insolvency defaults; (f) judgment defaults; (g) invalidity of any Senior Definitive Documentation; (h) change of control; (i) hedging agreements; (j) any impairment of security interests; (k) any restraint of operations or loss, damage, casualty, seizure or attachment of assets; (l) ERISA defaults; (m) defaults under material agreements (to be mutually agreed upon); and (n) other customary or industry-specific events of default for transactions of this type mutually acceptable to the parties.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
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| Expenses and Indemnification:   | The Borrower will pay all reasonable costs and expenses by the Agents and the Lead Arranger arising out of or related to due diligence and/or the preparation, negotiation, execution, delivery and closing of the Senior Definitive Documentation, including, without limitation, the reasonable legal fees of counsel and third party advisors to the Agents and the Lead Arranger.  The Borrowers will also pay the expenses of the Agents and each Lender in connection with the enforcement of the Senior Definitive Documentation.  The Borrower will indemnify the Agents and each Lender (and, in each case, their affiliates and their respective officers, directors, employees, advisors and agents) on customary terms, subject to customary exceptions.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
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| Assignments and Participations: | Each Lender may assign all or a portion of its loans and commitments under the Senior Credit Facility or sell participations therein to another person or persons subject to limitations, if any, established by the Administrative Agent.  Assignments (other than assignments made to entities described in clauses (a) through (c) below) shall be equal to an aggregate principal amount of at least $10.0 million and in multiples of $1.0 million in excess thereof.  So long as no Event of Default exists, the Borrower shall have the right to approve (which approval shall not be unreasonably withheld or delayed) any assignee; provided, that no such approval shall be required for an assignment to (a) a Lender, (b) an affiliate of a Lender, or (c) a fund engaged in the business if making, purchasing holding or investing in commercial loans and similar extensions of credit in the ordinary course of its business that administered or managed by a Lender, an affiliate of a Lender, or any entity or affiliate of an entity that administers or maintains a Lender.  Assignments to the Company or any of its affiliates shall not be permitted.For the avoidance of doubt, each Lender shall be permitted to grant a security interest in all or any portion of its rights under the Senior Definitive Documentation (including, but not limited to, the Senior Credit Facility), without the consent of, or notice to, or any other action by, any other party hereto, to secure the obligations of such Lender or any of its affiliates to any person or entity providing any |

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|                                         | loan, letter of credit or other extension of credit to or for the account of such Lender or any of its affiliates and any agent, trustee or representative of such person or entity.                                                                                                                                                                                                   |
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| Yield Protection and Increased Costs:        | Customary for transactions and facilities of this type, including, without limitation, in respect of breakage or redeployment costs incurred in connection with prepayments, changes in capital adequacy and capital requirements or their interpretation, illegality, unavailability, reserves without proration or offset and payments free and clear of withholding or other taxes. |
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| Governing Law and Forum:                     | The laws of the State of New York.                                                                                                                                                                                                                                                                                                                                                     |
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| Special Counsel to Agents and Lead Arranger: | Bingham McCutchen LLP.                                                                                                                                                                                                                                                                                                                                                                 |

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| Issuer:           | Dynamics Research Corporation  (the “Company” or “Borrower”).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
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| Guarantors:       | The Notes (as defined below) will be guaranteed by all existing and future direct and indirect domestic subsidiaries of the Company, the Target and their subsidiaries (including, without limitation, the domestic subsidiary (“MergerCo”) of the Company to be organized and merged with and into the Target in connection with the Acquisition) and, to the extent no material adverse tax consequences would result, foreign subsidiaries of the Company (collectively, the “Guarantors”); provided, that, any subsidiary that guarantees the Senior Credit Facility or the Alternative Senior Credit Facility (as defined below) shall be required to be a Guarantor.  The Borrower and the Guarantors are sometimes referred to as “Obligors”.  |
| Collateral:       | Unsecured.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| Issue:            | Senior Subordinated Notes (the “Notes”)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| Lead Investor:    | Ares Management LLC, on behalf of one or more funds managed by Ares Management LLC or affiliates of Ares Management LLC (such fund or funds being referred to as the “Fund” or the “Lead Investor”).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| Purchasers:       | The Lead Investor and other entities reasonably satisfactory to the Lead Investor and selected by the Lead Investor in consultation with the Borrower (collectively, together with any assignees and transferees thereof, the “Purchasers”).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| Principal Amount: | $40.0 million, plus the amount of any PIK Interest (the “Principal Amount”).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| Use of Proceeds:  | Proceeds of the issuance of the Notes will be used (a) to finance the Acquisition, (b) to refinance any existing debt of the Company and the Target, and (c) to pay fees and expenses incurred in connection                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |

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|                            | with the Transactions in an amount not to exceed $8.0 million.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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| Closing Date:                   | The first date on which (a) the Senior Subordinated Definitive Documentation is executed by the Obligors the Purchasers, and the Lead Investor, (b) the Notes have been issued, and (c) all applicable conditions precedent are satisfied (the “Closing Date”).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| Issue Price:                    | 100% of the Principal Amount.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| Ranking/Terms of Subordination: | The Notes shall be subordinated to the prior payment in full of the obligations under the Senior Credit Facility (or, if applicable, the Alternative Senior Credit Facility) including, without limitation, any cash management or non-speculative hedging obligations secured by liens on collateral that secures the Senior Credit Facility or Alternative Senior Credit Facility, but which shall not be in excess of an aggregate amount to be determined (as applicable, the “Senior Debt”).  The Notes will be senior to any and all seller notes, earn-out obligations or similar deferred payment obligations, on terms reasonably satisfactory to the Lead Investor.  The Obligors shall not incur any indebtedness that ranks senior to, or pari passu with, the Notes (other than the following (collectively, “Permitted Debt”): (a) the Senior Debt; (b) purchase money indebtedness and capital lease obligations not to exceed $1,500,000 in the aggregate at any time outstanding; (c) current liabilities of the Borrower or any of its subsidiaries (other than for borrowed money) incurred in the ordinary course of its business and in accordance with customary trade practices, (d) indebtedness arising from taxes not yet delinquent or otherwise being contested in good faith, with appropriate reserve made in accordance with GAAP; (e) indebtedness arising from judgments or awards (i) which have been in force for less than the applicable appeal period or (ii) in respect to which the Borrower or any of its subsidiaries  shall at the time in good faith be prosecuting an appeal or proceedings for review, and in each case the Borrower or such subsidiary shall have taken appropriate reserves therefore in accordance with GAAP and (f) any other indebtedness to be agreed upon by Lead Investor). The Notes will be subject to a separate subordination agreement that will, among other things, provide for (a) a permanent blockage period in respect of payment defaults with respect to principal, interest and periodic fees payable to the lenders providing the Senior Debt and other payment defaults above a threshold to be agreed under the Senior Debt, (b) a 180 day blockage period in respect of any event of default (other than a payment default described in the preceding clause (a)) under the Senior Debt, (c) a 120 day standstill period (the “Standstill Period”) for enforcement |

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|                 | of remedies subject to termination of the Standstill Period upon the occurrence of certain events, including without limitation: acceleration of the Senior Debt, filing of a bankruptcy petition and other enforcement actions undertaken by the lenders under the Senior Credit Facility (or, if applicable, the Alternative Senior Credit Facility) (the “Senior Lenders”) (including foreclosure actions), (d) the right of the Purchasers to file and vote their respective claims in the event of a bankruptcy of any Obligor (subject to a standby right to file proofs of claim in favor of the Senior Lenders in the event the Purchasers fail to do so in a timely manner), and (e) the right of the Purchasers to retain distributions of equity securities (which do not contain mandatory redemptions or mandatory cash dividends prior to the date that is 91 days after the maturity of the Senior Debt) or equally subordinated debt securities.  |
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| Maturity:            | Six years from the Closing Date.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
| Amortization:        | None.  Payable in full at maturity.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| Interest Rate:       | Interest accruing on the Principal Amount at the annual rate of 13.0% (the “Applicable Rate”).  Interest will be payable quarterly in arrears.  Interest accruing on the Principal Amount at the annual rate of 12.0% (the “Cash Interest Rate”) will be payable in cash.  Interest accruing on the Principal Amount at the annual rate in excess of the Cash Interest Rate will be payable, at the Borrower’s option, either in cash or by adding such accrued interest to the Principal Amount (the “PIK Interest”).If any event of default shall have occurred and be continuing, interest shall accrue and be payable in cash on the Principal Amount at the annual rate of 2.0% in excess of the Applicable Rate.                                                                                                                                                                                |
| Optional Redemption: | Subject to the applicable provisions of the Subordination Agreement (as defined below): (a)       After the Closing Date but on or before the second anniversary of the Closing Date, the Principal Amount of the Notes may not be redeemed; provided, however, if any Mandatory Redemption Event (as defined below) occurs on or before the second anniversary of the Closing Date, then the Borrower may, at its option, redeem the entire Principal Amount of the Notes, at a redemption price expressed as a percentage of the Principal Amount to be redeemed equal to the greater of either: (i) 100% plus (A) all interest on the Principal Amount redeemed that has accrued through the redemption date and                                                                                                                                                                                                                        |

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|                  | (B) the Make-Whole Premium (as defined below); or (ii) 115% plus all interest on the Principal Amount being redeemed that has accrued through the redemption date. (b)       After the second anniversary of the Closing Date, the Principal Amount of the Notes may be redeemed, at the Borrower’s option, in whole or in part, with minimum notice periods and in minimum amounts to be mutually agreed, at the following applicable redemption prices (expressed as a percentage of the Principal Amount to be redeemed) set forth below plus all interest on the Principal Amount being redeemed that has accrued through the redemption date (the “Redemption Price”): (i)  After the second anniversary of the Closing Date but on or before the third anniversary of the Closing Date, 105%; (ii)  After the third anniversary of the Closing Date but on or before the fourth anniversary of the Closing Date, 103%; (iii)  After the fourth anniversary of the Closing Date but on or before the fifth anniversary of the Closing Date, 101%; and (iv)  Thereafter, 100%.                                                                                                                                                               |
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| Mandatory Redemption: | Subject to the applicable provisions of the Subordination Agreement, if any Mandatory Redemption Event (as defined below) occurs, then each Purchaser shall have the right to require the Borrower, and the Borrower shall be obligated, to redeem all outstanding Notes of such Purchaser, at the following applicable redemption price: (x)  if such Mandatory Redemption Event occurs on or before the second anniversary of the Closing Date, then at a redemption price expressed as a percentage of the Principal Amount to be redeemed equal to 100% plus (a) all interest on the Principal Amount redeemed through the redemption date and (b) the Make-Whole Premium (as defined below); or (y)  if such Mandatory Redemption Event occurs after the second anniversary of the Closing Date, then at a redemption price equal to the applicable Redemption Price payable upon an optional redemption of all of the outstanding Notes as set forth under “Optional Redemption” above. A “Mandatory Redemption Event” shall be defined to mean (a) any merger of the Borrower with and into any Person (other than any merger of any subsidiary of the Borrower with or into the Borrower; provided, however, that the Borrower shall be the continuing or surviving corporation); (b) any sale of all or |

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|                                  | substantially all of the assets of the Borrower, (c) any Change of Control (to be defined), or (d) any acceleration of the Notes resulting from the failure to redeem the Notes upon the occurrence of any of the events set forth in clauses (a) through (c) above. The “Make-Whole Premium” shall mean, with respect to any redemption of Notes to which it applies, the result of the following: (a)  the “present value” as of the date of such redemption of (i) the Redemption Price equal to 105% of the Principal Amount of the Notes being redeemed, plus (ii) all required interest payments due on the Principal Amount of the Notes being redeemed at the applicable rate under the Senior Subordinated Definitive Documentation through the second anniversary of the Closing Date (excluding interest accrued prior to such redemption date), minus (b)  the Principal Amount of the Notes being redeemed; but in no event less than zero. For purposes of this definition, “present value” with respect to each of clauses (a)(i) and (a)(ii) hereof shall be computed using a discount rate, applied quarterly, equal to the Treasury Rate (definition to be mutually agreed) as of such redemption date plus 0.50%.  |
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| Conditions Precedent to Closing Date: | Subject to the Certain Funds Provisions, the obligation of the Purchasers to purchase the Notes will be subject to satisfaction of the conditions precedent set forth in the Commitment Letter, and the following conditions precedent: (a)       The negotiation, execution and delivery of the Senior Subordinated Definitive Documentation and other customary closing documentation, reasonably satisfactory to the Lead Investor. (b)      Since December 31, 2010, there shall not have occurred a Material Adverse Effect (as defined below) with respect to the Obligors (including the Target) taken as a whole.  Material Adverse Effect means a material adverse effect on (i) the business, revenues, operations, condition (financial or otherwise), assets, liabilities (contingent or otherwise), results of operations, properties or prospects of the Obligors (after giving effect to the Transactions), (ii) the ability of any Obligor to perform its obligations under the Senior Subordinated Definitive Documentation, (iii) the validity or enforceability of the Commitment Letter, the Fee Letter, or                                                                                                             |

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|   | the Term Sheets, or (iv) the rights and remedies of the Lead Investor and Purchasers under the Senior Subordinated Definitive Documentation. (c)      No action or proceeding before any court or governmental body shall be pending or, to the knowledge of the Company, threatened, wherein an unfavorable judgment, decree or order would (i) prevent the performance of the Acquisition Agreement or the consummation of any of the Transactions, (ii) declare unlawful any of the Transactions, (iii) reasonably be expected to cause any of the Transactions to be rescinded, or (iv) result in damages owing by the Fund in connection with the consummation of the Transactions other than as a result of a breach by the Fund of its obligations under the Commitment Letter. (d)      The Lead Investor shall have received the following, each in form and substance reasonably satisfactory to the Lead Investor: (i) the consolidated unaudited financial statements of the Company and its subsidiaries (other than the Target) for (A) each of the fiscal quarters from the fiscal quarter ending March 31, 2011 to and including the fiscal quarter ending no more than 30 days before the Closing Date and (B) each of the fiscal months from the fiscal month ending April 30, 2011 to and including the fiscal month ending no more than 30 days before the Closing Date, (ii) the consolidated unaudited financial statements of the Target for (A) each of the fiscal quarters from the fiscal quarter ending March 31, 2011 to and including the fiscal quarter ending no more than 30 days before the Closing Date and (B) each of the fiscal months from the fiscal month ending April 30, 2011 to and including the fiscal month ending no more than 30 days before the Closing Date, and (iii) the forecasted financial projections of the Obligors as of the Closing Date for the fiscal years 2011 through 2017 (on a quarter by quarter basis for fiscal years 2011 and 2012 and on an annual basis for fiscal years 2013 through 2017) together with a pro forma balance sheet of the Company and its subsidiaries after giving effect to the Transactions. (e)      The Acquisition shall have been consummated concurrently with the purchase of the Notes in accordance with (i) applicable law and (ii) the terms of the Acquisition Agreement and the other Definitive Acquisition Documents, each of which shall be reasonably satisfactory to the Lead Investor (it being agreed that the draft Acquisition Agreement dated as of June 2, 2011, together with all exhibits and |
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|   | schedules thereto and other agreements related thereto that have provided to counsel to the Lead Investor by Nixon Peabody LLP by email at 4:32 pm on June 1, 2011 are reasonably satisfactory to the Lead Investor), or as amended, supplemented, modified or waived; provided, however, that any such amendment, supplement, modification to or waiver of the Acquisition Agreement or the other Definitive Acquisition Documents that could reasonably be expected to be adverse to the interests of the Lead Investor and/or the Purchasers, shall require the written consent of the Lead Investor, and all conditions precedent to the consummation of the Acquisition set forth in the Acquisition Agreement shall have been satisfied or waived; provided, however, that any such waiver that could reasonably be expected to be adverse to the interests of the Lead Investor and/or the Purchasers shall require the written consent of the Lead Investor, and the Definitive Acquisition Documents shall be in full force and effect on the Closing Date.  The Acquisition Documents shall have been executed, and the Lead Investor shall have received a certified copy of the executed Acquisition Agreement and the other Definitive Acquisition Documents and all schedules and exhibits thereto. (f)      The Lead Investor shall have received the merger certificate with respect to the merger of the MergerCo with and into Target, with the Target as the surviving corporation (the “Merger”), in form and substance reasonably satisfactory to the Lead Investor and in full force and effect as of the Closing Date, and (ii) subject only to the funding of the initial loans under the Senior Credit Facility (or, if applicable, the Alternative Senior Credit Facility) and the Senior Subordinated Credit Facility and filing of the merger certificate immediately upon such funding, the Merger shall have been consummated in accordance with applicable laws and in accordance with the terms of the Definitive Acquisition Documents, and in all other respects reasonably satisfactory to the Lead Investor. (g)      The terms, maturity and subordination of any other indebtedness owed by the Target, the Company or any of their subsidiaries to any person as of the Closing Date shall be reasonably satisfactory to the Lead Investor. (h)      The closing of either (i) if the Company has chosen the Dual Facility Option, the Senior Credit Facility, or (ii) if the Company has chosen the Senior Subordinated Credit Facility Option, an alternative senior credit facility (the “Alternative  |
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|   | Senior Credit Facility”) (A) which shall be in form and substance reasonably satisfactory to the Lead Investor (it being agreed that the Lead Investor shall be satisfied with an Alternative Senior Credit Facility on the terms set forth in the “Execution Copy” of the commitment letter dated June 2, 2011 (including the exhibits, addendum and conditions annex attached thereto (collectively, the “Bank of America Senior Term Sheet”) listing the Company as borrower, Bank of America, N.A. as administrative agent, and Merrill Lynch, Pierce, Fenner & Smith Incorporated, Sun Trust Robinson Humphrey, Inc. and PNC Capital Markets LLC as lead arrangers delivered via email from David Lapp of Winston & Strawn LLP at [___] pm (Eastern) on June 2, 2011, or to the extent of any deviations from the Bank of America Senior Term Sheet that, individually or in the aggregate, are material to the interests of the Lead Investor or the Purchasers shall be reasonably satisfactory to the Lead Investor; provided, that any terms, definitions or other provisions of the Alternative Senior Credit Facility which are not specified in the Bank of America Senior Term Sheet shall be reasonably satisfactory to the Lead Investor), (B) of which the Fund or an affiliate shall have the right (at its option) to provide, pursuant to a written commitment provided on or before the closing date of the Alternative Senior Credit Facility, 20% of the aggregate outstanding amount of the term loan under the Alternative Senior Credit Facility, which may be allocated at Fund’s option among its affiliates; provided, that the Fund’s determination not to exercise such right shall not affect its other obligations hereunder, and (C) in which the closing or upfront fee paid to the Fund or its affiliate shall be no less than 1.0% of the Fund or its affiliate’s allocation of the Alternative Senior Credit Facility.  The Lead Investor shall have received a certified copy of the Senior Definitive Documentation. (i)       The negotiation, execution and delivery of a subordination agreement between either (i) the Purchasers and the agent under the Senior Credit Facility, or (ii) the Purchasers and the agent under the Alternative Senior Credit Facility described in clause (h)(ii) above, in either case, consistent with the second paragraph under “Ranking/Terms of Subordination” above and otherwise in form and substance reasonably satisfactory to the Lead Investor (the “Subordination Agreement”). (j)       The Lead Investor shall have received executed legal opinions, in form and substance reasonably satisfactory to the |
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|   | Lead Investor of (i) counsel to the Obligors, (ii) such local counsel to the Obligors as may be required by the Lead Investor and (iii) to the extent delivered to the Company, counsel to the sellers in connection with the Definitive Acquisition Documents. (k)      The applicable waiting periods, if any, under the Hart-Scott-Rodino Act shall have expired or been terminated and all other governmental and third party consents that are required for the consummation of the Transactions shall have been obtained and shall be final and non-appealable. (l)      The Lead Investor shall have received certificates from the secretary or similar officer of each of the Obligors party to the Senior Subordinated Definitive Documentation certifying as to the following: corporate authority, authorization of specific officers, incumbency and specimen signatures of such officers and certificates of status (including certified copies of the formation documents issued by the jurisdictions of organization of each such person and governing documents), all in form and substance reasonably satisfactory to the Lead Investor. (m)      The Lead Investor shall have received a certificate of a senior financial officer of the Company, in form and substance reasonably satisfactory to the Lead Investor, (i) confirming the solvency of the Obligors and their subsidiaries on a consolidated basis after giving effect to the Transactions, (ii) certifying as to an attached detailed sources and uses statement and funds flow memorandum for the Transactions, including the payment of all fees, commissions and expenses in connection therewith and (iii) certifying as to an attached organizational chart and a list of officers and directors of each of the Obligors. (n)      The Lead Investor shall have received evidence in form and substance reasonably satisfactory to the Lead Investor that (i) the Consolidated Total Leverage Ratio (definition to be mutually agreed) of the Company and its subsidiaries on a consolidated basis shall not exceed 4.00:1.00 for the most recent twelve month period ending prior to the Closing Date for which financial statements are available (after giving pro forma effect to the Transactions), (ii) the Consolidated Senior Leverage Ratio (definition to be mutually agreed) of the Company and its subsidiaries on a consolidated basis shall not exceed 3.00:1.00 for the most recent twelve month period ending prior to the Closing Date for which financial  |
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|                            | statements are available (after giving pro forma effect to the Transactions), and (iii) consolidated EBITDA of the Company and its subsidiaries (including the Target) for the most recent twelve month period ending prior to the Closing Date for which financial statements are available shall not be less than $37.8 million. (o)      The Lead Investor shall have received customary executed “payoff letters” and lien terminations reflecting repayment of all indebtedness of the Company and its subsidiaries required to be repaid pursuant to the Definitive Acquisition Documents. (p)      The Lead Investor shall have received, at least 5 days prior to the Closing Date, all documentation and other information required by bank regulatory authorities under applicable “know-your-customer” and anti-money laundering rules and regulations, including the Patriot Act, as well as completed reference checks with respect to senior management of the Obligors and their subsidiaries. (q)      Payment of all fees and out-of-pocket expenses required to be paid on the Closing Date.  |
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| Representations and Warranties: | Subject to the Certain Funds Provisions, the representations and warranties will be substantially similar to those set forth in the Senior Definitive Documentation (except for representations and warranties relating solely to collateral) with references to the “Senior Definitive Documentation” to be replaced with “Senior Subordinated Definitive Documentation” and with appropriate cushions as against the baskets included in the Senior Definitive Documentation.  If the Senior Subordinated Credit Facility Option is chosen, the representations and warranties will include such other customary and industry-specific representations and warranties for senior subordinated credit facilities of this type as reasonably determined by the Lead Investor.                                                                                                                                                                                                                                                                                                                                                                                                                   |
| Financial Covenants:            | Financial covenants will include Consolidated Senior Leverage Ratio, Consolidated Total Leverage Ratio, Consolidated Fixed Charge Coverage Ratio and Consolidated Capital Expenditures, in each case, to be defined in the Senior Subordinated Definitive Documentation, and with covenant levels to be mutually agreed upon between the Borrower and the Lead Arranger, but with appropriate cushions to be mutually agreed against the covenants in the Senior Definitive Documentation.  Each of the ratios referred to above will be calculated on a consolidated basis for the Borrower and its subsidiaries for each consecutive four fiscal quarter period,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |

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|                          | except that during the first year following the Closing Date, such calculations shall be made for the period of time since the Closing Date and, where appropriate, annualized (provided that, EBTIDA and Consolidated Capital Expenditures shall not be annualized but will be based on scheduled amounts for the portion of the applicable measurement period occurring prior to the Closing Date).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
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| Other Covenants:              | Covenants will be substantially similar to those set forth in the Senior Definitive Documentation (other than covenants relating solely to collateral) with references to the “Senior Definitive Documentation” to be replaced with “Senior Subordinated Definitive Documentation” and with appropriate cushions as against the baskets included in the Senior Definitive Documentation.  If the Senior Subordinated Credit Facility Option is chosen, the covenants will include such other customary and industry-specific covenants for senior subordinated credit facilities of this type as reasonably determined by the Lead Investor.                                                                                                                                                                                                                                       |
| Events of Default:            | The events of default will be substantially similar to those set forth in the Senior Definitive Documentation (other than events of default relating solely to collateral), with references to the “Senior Definitive Documentation” to be replaced with “Senior Subordinated Definitive Documentation” and with appropriate cushions as against the baskets included in the Senior Definitive Documentation; provided that the default relating to the Senior Credit Facility will be cross-acceleration, maturity of the Senior Credit Facility and cross-payment default that lasts for more than 60 days.  If the Senior Subordinated Credit Facility Option is chosen, the events of default will include such other customary and industry-specific events of default for senior subordinated credit facilities of this type as reasonably determined by the Lead Investor.  |
| Expenses and Indemnification: | The Borrower will pay all reasonable costs and expenses incurred by the Lead Investor arising out of or related to due diligence and/or the preparation, negotiation, execution, delivery and closing of the Subordinated Definitive Documentation, including, without limitation, any and all reasonable legal fees of special and local counsel in any relevant jurisdiction to the Lead Investor.  The Borrowers will also pay the expenses of the Lead Investor and each Purchaser in connection with the enforcement of the Senior Subordinated Definitive Documentation.  The Borrower will indemnify the Lead Investor and each Purchaser (and, in each case, their affiliates and their respective officers, directors, employees, advisors and agents) on customary terms, subject to customary                                                                                              |

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| Assignments and Participations:   | Each Purchaser may assign all or a portion of its Notes or sell participations therein to another person or persons with such further assignments by holders of the Notes being subject to limitations, if any, established by the Lead Investor.  Assignments shall be equal to an aggregate principal amount of at least $5.0 million and in multiples of $1.0 million in excess thereof.  So long as no Event of Default exists, the Borrowers shall have the right to approve (which approval shall not be unreasonably withheld or delayed) any assignee; provided that no such approval shall be required for an assignment to (a) a Purchaser, (b) an affiliate of a Purchaser, or (c) a fund engaged in the business if making, purchasing holding or investing in commercial loans and similar extensions of credit in the ordinary course of its business that administered or managed by a Purchaser, an affiliate of a Purchaser, or any entity or affiliate of an entity that administers or maintains a Purchaser.  Assignments to the Company or any of its affiliates shall not be permitted. For the avoidance of doubt, each Purchaser shall be permitted to grant a security interest in all or any portion of its rights under the Senior Subordinated Definitive Documentation (including, but not limited to, the Senior Subordinated Credit Facility), without the consent of, or notice to, or any other action by, any other party hereto, to secure the obligations of such Purchaser or any of its affiliates to any person or entity providing any loan, letter of credit or other extension of credit to or for the account of such Purchaser or any of its affiliates and any agent, trustee or representative of such person or entity.  |
| Governing Law and Forum:          | The laws of the State of New York.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| Special Counsel to Lead Investor: | Bingham McCutchen LLP.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |

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