**Exhibit 10(c) xxv**

**AMERICAN SCIENCE AND ENGINEERING,INC.2005 Equity and Incentive Plan**

Nonstatutory Stock OptionGrant AgreementPerformance Vested Options

American Science and Engineering, Inc. (the “Company”),a Massachusetts corporation, hereby grants to the person named below an optionto purchase shares of Common Stock, $0.66 2/3 par value, of the Company (the “Option”)under and subject to the Company’s 2005 Equity and Incentive Plan (the “Plan”)exercisable on the terms and conditions set forth below and those attachedhereto and in the Plan:

| **Grant Date**      | ** ** | ** ** |
|---------------------|------------|------------|
| ** **          | ** ** | ** ** |
| **Optionee**        | ** ** | ** ** |
| ** **          | ** ** | ** ** |
| **Options Granted** | ** ** | ** ** |
| ** **          | ** ** | ** ** |
| **Exercise Price**  | ** ** | ** ** |
| ** **          | ** ** | ** ** |
| **Expiration Date** |       |       |
| ** **          |       |       |

 

Exercisability Schedule and Vesting:  The options shall vest and become exercisableupon the achievement of performance targets of the Company, as moreparticularly described herein (“Performance-Vested Options”). Specifically,Performance-Vested Options shall become exercisable in accordance with thefollowing terms: as soon as practicable following the delivery to the Companyof its audited financial statements for the fiscal year, the CompensationCommittee shall determine whether the Performance Goals (as defined in thePlan) have been met (the “Target”). If the Target has been met, 100% ofrestrictions on the Performance-Vested Shares will lapse. If the Company hasnot met the Target prior to the end of the fiscal year ending on or before March 31,2010 (“Final Target Date”), the Performance-Vested Shares shall beautomatically and immediately forfeited.

 The Target shall be established by theCommittee based on one or more of the following objective criteria prior to thebeginning of such Performance Period or within such period after the beginningof the Performance Period (as defined in the Plan) as shall meet therequirements to be considered “pre-established objective performance goals” forpurposes of the regulations issued under Section 162(m) of the Code: (i) increasesin the price of the Common Stock, (ii) market share, (iii) sales, (iv) revenue,(v) return on equity, assets, or capital, (vi) economic profit(economic value added), (vii) total shareholder return, (viii) costs,(ix) expenses, (x) margins, (xi) earnings (including EBITDA) orearnings per share, (xii) cash flow (including adjusted operating cash flow),(xiii) customer satisfaction, (xiv) operating profit, (xv) net income, (xvi)research and development, (xvii) product releases, (xviii) manufacturing, or(xix) any combination of the foregoing, including without limitation, goalsbased on any of such measures relative to appropriate peer groups or marketindices, as more particularly outlined on Exhibit A, attached to thisAgreement

This Option shallnot be treated as an Incentive Stock Option under section 422 of the InternalRevenue Code of 1986, as amended.

By acceptance ofthis Option, the Participant agrees to the terms and conditions set forth aboveand those attached hereto and in the Plan.
| PARTICIPANT |   | AMERICAN SCIENCE AND ENGINEERING, INC. |
|-------------|--------|----------------------------------------|
|        |   |                                   |
|        |   |                                   |
|        |   |                                   | By: |   |
|             |        |                                        |  |  |

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**AMERICANSCIENCE AND ENGINEERING, INC. 2005 EQUITY AND INCENTIVE PLAN**

**NonstatutoryStock Option Terms And Conditions**

1.           Plan Incorporated by Reference.This Option is issued pursuant to the terms of the Plan. This Grant Agreementdoes not set forth all of the terms and conditions of the Plan, which areincorporated herein by reference. Capitalized terms used and not otherwisedefined in this Grant Agreement have the meanings given to them in the Plan. TheCommittee administers the Plan and its determinations regarding the operationof the Plan are final and binding. A copy of the Plan may be obtained uponwritten request without charge from the Human Resources Department of theCompany.

2.           Option Price. The price to bepaid for each share of Common Stock issued upon exercise of the whole or anypart of this Option is the Option Price set forth on the face of this GrantAgreement.

3.           Exercisability and VestingSchedule. As long as the Participant remains continuously employed by theCompany or an Affiliate, this Option will vest and may be exercised (in wholeor in part) in accordance with the Exercisability and Vesting Schedule setforth on the face of this Grant Agreement, but only for the purchase of whole shares.This Option may not be exercised as to any shares after the Expiration Date.

4.           Effect of Termination ofEmployment. If the Participant’s status as an employee of the Company or anAffiliate is terminated for any reason (voluntary or involuntary), this Optionshall not thereafter become vested or exercisable as to any additional shares,and the already vested portion of this Option shall remain exercisable (to theextent not previously exercised) for ninety (90) days after the day on whichthe Participant’s employment is terminated, whereupon this Option shallterminate; exceptthat

(a)                                  Ifthe Participant is on military leave, sick leave, or other leave of absenceapproved by the Company or the Affiliate, his or her employment with theCompany or the Affiliate will be treated as continuing intact during the periodof such leave. The Participant’s employment will be deemed to have terminatedon the first day after the expiration of such leave.

(b)                                 Ifthe Participant’s employment is terminated by reason of his or her death, thisOption shall become exercisable and vested on a prorated basis reflecting thepercentage of such Option that was accrued by the Company on its books at thetime of the Participant’s death, without regard to the Exercisability andVesting Schedule. In such event, such prorated portion of this Option may beexercised at any time within twelve (12) months after the date of theParticipant’s death by the person(s) to whom the Participant’s optionrights pass by will or by the applicable laws of descent and distribution.

(c)                                  Ifthe Participant’s employment is terminated by the Company or the Affiliate for “cause,”this Option, to the extent vested and exercisable upon such termination ofemployment, may be exercised by the Participant only through the close ofregular business hours on the date of termination. Unless otherwise defined inany written employment agreement between the Company or the Affiliate and theParticipant, cause shall be determined by the Committee in its discretion.

In no event,however, may this Option be exercised after the Expiration Date set forth onthe face of this Grant Agreement.

5.           Method of Exercise. Toexercise this Option, the Participant shall deliver notice of exercise to theCompany specifying the number of shares with respect to which the Option isbeing exercised accompanied by payment of the Option Price for such shares (i) bycash, (ii) by actual delivery or attestation of ownership of shares ofCommon Stock owned by the Participant, including vested Restricted Stock, (iii) byretaining shares of Common Stock otherwise issuable pursuant to the Option, (iv) forconsideration received by the Company under a broker-assisted cashless exerciseprogram acceptable to the Company, or (v) for such other lawfulconsideration as the Committee may determine. Such exercise notice must begiven at the time and in the manner as specified by the Committee from time totime. Upon payment of the exercise price and applicable taxes, and assumingsatisfaction of all applicable securities laws and exchange listingrequirements, the Company shall delivery, or make available to the Participantthrough the Plan’s designated broker, the net shares or cash proceeds (as thecase may be) resulting from the Option exercise.

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6.           Change of Control. To preservethe Participant’s rights under this Option in the event of a Change in Controlof the Company (as defined below) occurring while the Participant is employedby the Company or an Affiliate, the Committee shall fully accelerate thevesting of this Option and may in its discretion take one or more of thefollowing actions: (i) provide for payment to the Participant of cash orother property with a Fair Market Value equal to the amount that would havebeen received upon the exercise or payment of the Option had the Option beenexercised or paid upon the Change in Control of the Company, (ii) adjustthe terms of the Option in a manner determined by the Committee to reflect theChange in Control of the Company, (iii) cause the Option to be assumed, ornew rights substituted therefore, by another entity, or (iv) make suchother provision as the Committee may consider equitable to the Participant andin the best interests of the Company. For purposes of this Section, a “Changein Control of the Company” shall mean:  (i) theconsummation of (a) any consolidation or merger of the Company in whichthe Company is not the continuing or surviving entity or pursuant to which theCompany’s Common Stock is converted into cash, securities, or other property,other than a merger of the Company in which the ownership by the Company’sstockholders of the securities in the surviving entity is at least two-thirdsof the combined voting power; or (b) any sale, lease, exchange, or othertransfer (in one transaction or a series of related transactions) of all orsubstantially all of the assets of the Company; (ii) the stockholders ofthe Company have approved any plan or proposal for the liquidation ordissolution of the Company; (iii) any person (as that term is used inSections 13(d) and 14(d)(2) of the Exchange Act) has become thebeneficial owner (within the meaning of Rule 13d-3 promulgated underthe Exchange Act) of 20% or more of the Company’s outstanding Common Stock; or (iv) thatduring any period of two consecutive years, individuals who, at the beginningof such period, constitute the entire Board of Directors of the Company shallcease, for any reason, to constitute a majority thereof, unless the election,or the nomination for election by the Company’s stockholders, of each newdirector was approved by a vote of at least three-quarters of the directorsthen still in office who were directors at the beginning of the period.

7.           Option Not Transferable. ThisOption is not transferable by the Participant other than by will or the laws ofdescent and distribution, and is exercisable, during the Participant’slifetime, only by the Participant. The naming of a Designated Beneficiary doesnot constitute a transfer. The Committee may, in its sole discretion, allow theParticipant to transfer this Option under a domestic relations order insettlement of marital or domestic property rights.

8.           Payment of Taxes. TheParticipant shall pay to the Company, or make provision satisfactory to theCommittee for payment of, any taxes required by law to be withheld with respectto the exercise of the Option no later than the date of the event creating thetax liability. The Company and its Affiliates may, to the extent permitted bylaw, deduct any such tax obligations from any payment of any kind due to theParticipant. In the Committee’s discretion, the minimum tax obligationsrequired by law to be withheld with respect to the exercise of the Option maybe paid in whole or in part in shares of Common Stock, including sharesretained from the exercise of the Option, valued at their Fair Market Value onthe date of retention.

9.           No Right To Employment. Noperson shall have any claim or right to be granted an Option. Neither the Plannor this Option shall be deemed to give any Participant the right to continuedemployment or to limit the right of the Company or an Affiliate to dischargeany Participant at any time.

10.         Amendment of Option. TheCommittee may amend, modify, or terminate this Option, including substitutingtherefore another option of the same or a different type, changing the date ofexercise or realization and converting an incentive stock option to anonstatutory stock option, provided that the Participant’s consent to suchaction shall be required unless (i) the Committee determines that theaction, taking into account any related action, would not materially andadversely affect the Participant, or (ii) the action is permitted by theterms of the Plan.

11.         Data Privacy and Electronic Delivery.By executing this Grant Agreement, the Participant: (i) authorizes theCompany, its Affiliates, and any agent of the Company or its Affiliatesadministering the Plan or providing Plan recordkeeping services, to disclose tothe Company, its Affiliates or third-party service providers such informationand data as may be deemed necessary or appropriate to facilitate the grant ofOptions and the administration of the Plan; (ii) waives any data privacyrights he or she may have with respect to such information; and (iii) authorizesthe Company, its Affiliates, and third-party service providers to store andtransmit such information in electronic form. The Participant agrees that theCompany, its Affiliates, and their agents may deliver electronically alldocuments relating to the Plan or this Option (including, without limitation,prospectuses required by the Securities and Exchange Commission) and all otherdocuments that the Company is required to deliver to its stockholders.

12.         Cancellation and Rescission ofOption. In consideration of this Option the Participant agrees that ifParticipant breaches Participant’s obligations under the terms of the AmericanScience & Engineering Employee Representation, Rights in Data, andNon-Compete Agreement, then the Company may cancel, suspend, withhold, orotherwise limit or restrict (in whole or in part) the exercise of this Option. Ifthis Option has been exercised prior to the occurrence or discovery by theCompany of any such breach, then the Committee may rescind the exercise of thisOption at any time within the two (2) year period after such exercise. Inthe event of any rescission, the Participant shall pay to the Company theamount of income recognized upon exercise of the Option and 

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any additionalgain realized upon any sale of Option shares in such manner and on such termsand conditions as may be required by the Committee, and the Company shall beentitled to set-off the amount of any such income or gain against any amountthat may be owed to the Participant.

13.         Impact of Restatement of FinancialStatements Upon Option. If any of the Company’s financial statements arerequired to be restated as a result of errors, omissions, or fraud, theCommittee may (in its sole discretion, but acting in good faith) direct thatthe Company recover all or a portion of the amount of income recognized uponthe exercise of this Option and any additional gain realized upon any sale ofthe Option shares with respect to any fiscal year of the Company the financialresults of which are negatively affected by such restatement. The amount to berecovered from the Participant shall be the amount by which the Option incomeat exercise, and any gain upon sale of the Option shares of the affected award,exceed the amount that would have been payable to the Participant had thefinancial statements been initially filed as restated, or any greater or lesseramount that the Committee shall determine. The Committee may determine torecover different amounts from different participants or different classes ofparticipants on such bases as it shall deem appropriate. In no event shall theamount to be recovered by the Company be less than the amount required to berepaid or recovered as a matter of law. The Committee shall determine whetherthe Company shall effect any such recovery (i) by seeking repayment from theParticipant, (ii) by reducing (subject to applicable law and the terms andconditions of the applicable plan, program, or arrangement) the amount thatwould otherwise be payable to the Participant under any compensatory plan,program, or arrangement maintained by the Company or any of its Affiliates,(iii) by withholding payment of future increases in compensation (including thepayment of any discretionary bonus amount) or grants of compensatory awards thatwould otherwise have been made in accordance with the Company’s otherwiseapplicable compensation practices, or (iv) by any combination of the forgoing.

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