Document:

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                                                                    Exhibit 10.2

                            AMENDMENT AGREEMENT

     THIS AMENDMENT AGREEMENT is entered into by and between Northrop
Grumman Corporation (the "Company") and Kent Kresa (the "Executive").

                                  RECITALS

     WHEREAS, the Company granted the Executive certain awards identified
herein under the Company's 1993 Long-Term Incentive Stock Plan (the
"Plan"); and

     WHEREAS, the Company has amended those awards to provide certain
improved retirement terms to the Executive and the Company and the
Executive desire to document such amendments;

     NOW, THEREFORE, in consideration of the mutual promises and covenants
made herein and the mutual benefits to be derived herefrom, the parties
hereto agree as follows:

1. Amendments.

     .  December 1998 Stock Option. The Executive was granted a stock option by
        the Company under the Plan in December 1998. The terms of such option
        provide that if the Executive retires (as defined in the award
        certificate evidencing such option grant) while employed by the Company
        or one of its subsidiaries (x) the next succeeding installment of the
        option will vest and (y) all installments under the option which have
        vested as of the Executive's retirement date may be exercised by the
        Executive (or his permitted successor) until the fifth anniversary of
        the Executive's retirement, but in no event after the expiration date of
        the option. Such option is hereby amended such that, if the Executive
        retires (as defined in the award certificate evidencing such option
        grant) while employed by the Company or one of its subsidiaries (x) the
        next succeeding installment of the option will vest as of the
        Executive's retirement date, (y) any and all succeeding installments of
        the option will vest as of the date(s) that they would have otherwise
        vested had the Executive remained employed by the Company or one of its
        subsidiaries, and (z) all installments under the option which have
        vested as of the Executive's retirement date or which vest as described
        in the foregoing clause (y) may be exercised by the Executive (or his
        permitted successor) until the fifth anniversary of the Executive's
        retirement, but in no event after the expiration date of the option.

     .  December 1998 RPSR Grant. The Executive was granted a restricted
        performance stock right ("RPSR") award by the Company under the Plan in
        December 1998. The terms of such award provide that if the Executive
        retires (as defined in the Guide to Administration applicable to such
        award) while employed by the Company or one of its subsidiaries (x) the
        target number of RPSRs subject to the award will be pro rated based on
        the number of months in the applicable performance period that the
        Executive was employed by the Company or a subsidiary, and (y) prorated
        payments with respect to the award will be made at the same time and on
        the same performance basis as if the Executive had not
<PAGE>

        retired. Such award is hereby amended such that, if the Executive
        retires (as defined in the Guide to Administration applicable to such
        award) while employed by the Company or one of its subsidiaries there
        will be no pro ration of the target number of RPSRs subject to the award
        (that is, 100% of the target number of RPSRs initially subject to the
        award shall remain subject to the award). Payments with respect to the
        award will still be made at the same time and on the same performance
        basis as if the Executive had not retired.

     .  November 1999 RSR Grant. The Executive was granted a restricted stock
        right ("RSR") award by the Company under the Plan in November 1999. The
        terms of such award provide that if the Executive retires (as defined in
        the award certificate evidencing such award grant) while employed by the
        Company or one of its subsidiaries the next succeeding installment of
        the award will vest. Such award is hereby amended such that, if the
        Executive retires (as defined in the award certificate evidencing such
        award grant) while employed by the Company or one of its subsidiaries
        (x) the next succeeding installment of the award will vest as of (and
        the share certificate corresponding to such installment shall be issued
        as soon as practical after) the Executive's retirement date, and (y) any
        and all succeeding installments of the award will vest as of the dates
        that they would have otherwise vested had the Executive remained
        employed by the Company or one of its subsidiaries (and the share
        certificate corresponding to any such installment shall be issued as
        soon as practical after the corresponding scheduled vesting date).

2.   Continuing Effect of Awards. Except as provided above, the other terms of
     the awards referred to above, as set forth or referenced in the applicable
     award certificates, shall continue in effect.

     IN WITNESS WHEREOF, the parties have duly executed this Amendment Agreement
as of _________________, 2001.

THE COMPANY                                  THE EXECUTIVE

By:  /s/ J. Michael Hateley                  /s/ Kent Kresa
     -------------------------               -------------------------------
                                             Kent Kresa

Its: Corporate Vice President,
     Chief Human Resources and
     Administrative Officer

By:  /s/ John H. Mullan
     ---------------------------

Its: Corporate Secretary

                                     2<PAGE>

                                                                  EXHIBIT 10.133

RECORDATION REQUESTED BY:

     Bank One, NA with its main office in Chicago, Illinois
     1301 S. Bowen Rd.
     Arlington, TX 76013

WHEN RECORDED MAIL TO:

     Banc One Operations Services
     P.O. Box 901094
     Fort Worth, TX 76101-2094
________________________________________________________________________________

BANKONE

                            MODIFICATION AGREEMENT

THIS MODIFICATION AGREEMENT ("Agreement") is executed to be effective as of
AUGUST 20, 2001, by COLONIAL FULL SERVICE CAR WASH, INC., whose address is 1000
CRAWFORD PLACE, SUITE 400, MT. LAUREL, NJ 08054-3932 (referred to below as
"Grantor") and Bank One, NA with its main office in Chicago, Illinois (referred
to below as "Lender"), whose address is 1301 S. Bowen Rd., Arlington, TX 76013.

                                  WITNESSETH:

WHEREAS, a loan ("Loan") was made to Grantor in the amount of $2,216,000.00,
evidenced by a promissory note (as renewed, extended or modified, the "Note")
dated October 16, 1996, executed and delivered by Grantor in the principal
amount of the Loan (the Note being more fully described in the Deed of Trust);
and

WHEREAS, Grantor executed and delivered a deed of trust (as renewed, extended or
modified, the "Deed of Trust") dated October 16, 1996, to trustee for the
benefit of Lender, which is recorded in the Real Property Records of TARRANT
County, Texas RECORDED OCTOBER 24, 1996 IN TARRANT COUNTY CLERK'S OFFICE VOLUME
12558, PAGES 0012-0038 covering the following real property:

     LOT 4, BLOCK 19, OVERTON SOUTH ADDITION TO THE CITY OF FORT WORTH, TARRANT
     COUNTY, TEXAS, ACCORDING TO PLAT RECORDED IN VOLUME 388-210, PAGE 40 DEED
     RECORDS OF TARRANT COUNTY, TEXAS,

together with all improvements, appurtenances, other properties (whether real or
personal), rights and interests described in and encumbered by the Deed of Trust
(collectively, the "Property"), to secure the payment of the Note and
performance of the other obligations set forth in the Note, Deed of Trust and
all credit agreements, loan agreements, guaranties, security agreements,
mortgages, deeds of trust and all other instruments, agreements and documents,
whether now or hereinafter existing, executed in connection with the Loan (the
Note, Deed of Trust and such other instruments, agreements and documents
collectively known herein as the "Related Documents"); and

WHEREAS, Lender is the owner and holder of the Note, Deed of Trust and the other
Related Documents; and
<PAGE>

WHEREAS, the parties hereto now propose to modify certain of the terms and
provisions of the Note, the Deed of Trust and the other Related Documents as
provided herein.

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

     Maturity Date. The maturity date of the Note shall be August 20, 2004
     ("Maturity Date"), when the unpaid principal balance of the note, together
     with all accrued but unpaid interest thereon, shall be due and payable.
     Grantor hereby renews and modifies, but does not extinguish, the Note and
     the liens, security interests and assignments created and evidenced by the
     Deed of Trust.

     Interest Rate. As of the effective date hereof, interest on the principal
     balance of the Note from time to time remaining unpaid prior to maturity
     shall be payable at the following rate:

     The interest rate on this Note is subject to fluctuation based upon the
     Prime Rate of interest in effect from time to time (the "Index") (which
     rate may not be the lowest, best or most favorable rate of interest which
     Lender may charge on loans to its customers). "Prime Rate" shall mean the
     rate announced from time to time by Lender as it prime rate. Each change in
     the rate to be charged on this Note will become effective without notice on
     the same day as the Index changes. Except as otherwise provided herein, the
     unpaid principal balance of this Note will accrue interest at a rate per
     annum which will from time to time be equal to the sum of the Index, plus
     0.250%. NOTICE: Under no circumstances will the interest rate on the Note
     be more than the maximum rate allowed by applicable law. If at any time any
     interest rate to be charged hereunder that is based on the Index is greater
     than the maximum rate allowed by applicable law, thereby causing the
     interest rate on this Note to be limited to the maximum rate allowed by
     applicable law, any subsequent reduction in the Index will not reduce the
     rate of interest on this Note below the maximum rate allowed by applicable
     law until the total amount of interest accrued on this Note equals the
     amount of interest that would have accrued on this Note if the interest
     rate based on the Index had at all times been in effect. For purposes of
     this Agreement, the "maximum rate allowed by applicable law" means the
     greater of (a) the maximum rate of interest permitted under federal or
     other law applicable to the indebtedness evidenced by this Agreement, or
     (b) the "Weekly Rate Ceiling" as referred to in Section 303.201 of the
     Texas Finance Code, as supplemented by the Texas Credit Title. Whenever
     increases occur in the interest rate, Lender at its option, may do one or
     more of the following: (a) increase Borrower's payments to ensure
     Borrower's loan will pay off by its original final maturity date, (b)
     increase Borrower's payments to cover accruing interest, (c) increase the
     number of Borrower's payments, and (d) continue Borrower's payments at the
     same amount and increase Borrower's final payment. Under no circumstances
     shall the interest rate charged, collected or contracted for on the Note
     exceed the maximum rate permitted by law. If such maximum rate of interest
     changes after the date hereof and the Note is accruing interest at a
     fluctuating rate, the maximum rate permitted by law shall be automatically
     increased or decreased, as the case may be, without notice from time to
     time as of the effective date of each change in such maximum rate.

     Payment Terms. The Note, as modified hereby, shall be payable as follows:
     The principal of and interest on this Note shall be due and payable in 35
     equal monthly installments in the amount of $23,441.77 each, commencing on
     September 20, 2001, and continuing on the same day of each month
     thereafter, with one final installment in the amount of the principal
     balance then outstanding, together with all accrued but unpaid interest,
     being due and payable on August 20, 2004. The amount of each of the
     foregoing scheduled payments includes principal and interest.
<PAGE>

Grantor hereby expressly promises to pay to the order of Lender the principal
amount of the Note and all accrued but unpaid interest now or hereafter to
become due and payable under the Note, as modified hereby.

Current Note Balance. As of the effective date hereof, the outstanding principal
balance of the Note is $1,797,918.91.

Acknowledgment. Except as otherwise specified herein, the terms and provisions
hereof shall in no manner impair, limit, restrict or otherwise affect the
obligations of any party to the Related Documents. Grantor hereby acknowledges,
agrees and represents that (a) Grantor is indebted to Lender pursuant to the
terms of the Note, as modified hereby; (b) the liens, security interests and
assignments of the respective dignity and priority recited in the Related
Documents; (c) the lien of the Deed of Trust is hereby renewed and/or modified,
as the case may be, so as to secure the payment of the Note, as modified hereby;
(d) there are no claims or offsets against, or defenses or counterclaims to, the
terms or provisions of the Related Documents and the obligations created or
evidenced by the Related Documents; (e) there are no claims, offsets, defenses
or counterclaims arising from any of Lender's acts or omissions with respect to
the Property, the Related Documents or Lender's performance under the Related
Documents or with respect to the Property; (f) the representations and
warranties contained in the Related Documents are true and correct
representations and warranties of Grantor and third parties, as of the date
hereof; and (g) Lender is not in default and no event has occurred which, with
the passage of time, giving of notice, or both, would constitute a default by
Lender of Lender's obligations under the terms and provisions of the Related
Documents. For purposes of this Agreement, "Lender" shall include Lender's
predecessors, successors, assigns, agents and present and former officers,
directors, employees, and representatives and any persons or entities owned or
controlled by, owning or controlling, or under common control or otherwise
affiliated with, Lender.

No Waiver of Remedies. Except as may be expressly set forth herein, nothing
contained in this Agreement shall prejudice, act as, or be deemed to be, a
waiver of any right, remedy or recourse available to Lender by reason of the
occurrence or existence of any fact, circumstances or event constituting a
default under the Note or any other Related Documents.

Costs and Expenses. Contemporaneously with the execution and delivery hereof,
Grantor shall pay, or cause to be paid, all costs and expenses incident to the
recordation hereof and the consummation of the transaction contemplated hereby,
including, but not limited to, recording fees, title insurance policy or
endorsement premiums or other charges of any applicable title company, and
reasonable fees and expenses, if applicable, of legal counsel to Lender.

Effectiveness of the Related Documents. Except as expressly modified by the
terms and provisions hereof or provided herein to the contrary, each and every
term and provision of the Note, Deed of Trust and other related Documents are
hereby ratified and shall remain in full force and effect and the parties hereto
covenant to observe, comply with and perform each of the terms and provisions of
the Related Documents, as modified hereby; provided, however, that any reference
in any of the Related Documents to the Loan, the amount constituting the Loan,
any defined terms, or to any of the other Related documents shall be deemed,
from and after the date hereof, to refer to the Loan, the amount constituting
the Loan, the defined terms and to such other Related documents, as modified
hereby. The parties hereto agree that the modification as provided herein shall
in no manner vitiate, impair or affect the liens and security interests created
and evidenced by the Deed of trust and the other Related Documents (except as
expressly modified, amended, renewed and
<PAGE>

extended herein) and that such liens and security interests shall not be and are
not in any manner released or waived; the purpose of this instrument being
simply to modify the Note, Deed of Trust and the other Related Documents as
expressly set forth herein.

Execution and Delivery of Agreement by Lender. Lender shall not be bound by this
Agreement until (i) Lender has executed and delivered this Agreement, (ii) the
other party(ies) to this Agreement have performed all of their obligations under
this Agreement to be performed contemporaneously with the execution and delivery
of this Agreement, (iii) if required by Lender, each guarantor of the Loan, if
any, has executed and delivered to Lender a consent agreement, in form and
substance satisfactory to Lender, and (iv) if required by Lender, the other
party(ies) to the Agreement and each guarantor of the Loan, if any, have
executed and delivered to Lender an arbitration resolution, an environmental
questionnaire, and an environmental certification and indemnity agreement, all
in form and substance satisfactory to Lender.

Binding Agreement. This Agreement shall be binding upon, and inure to the
benefit of the heirs, executors, administrators, personal representatives,
successors and assigns of the parties hereto.

Additional Documentation. From time to time, the other party(ies) to this
Agreement shall execute or procure and deliver to Lender such other and further
documents securing or pertaining to the loan or the Related Documents as shall
be reasonably requested by Lender and to take and cause to be taken all such
actions as Lender shall deem necessary or appropriate in connection with, or
related to this Agreement and the transactions contemplated hereby, including,
but not limited to, such actions as shall be necessary (a) to record this
Agreement and any related instruments, document or agreement, (b) to cause an
insurer satisfactory to Lender to issue a mortgagee policy of title insurance
with respect to the lien of the Deed of Trust or, at Lender's sole option, an
endorsement to any existing mortgagee policy of title insurance, such policy or
endorsement to be in form and substance satisfactory to Lender, and (c) to
satisfy appraisal and any other legal requirements under applicable law and/or
in accordance with Lender's policies and procedures.

Governing Law. THE TERMS AND CONDITIONS HEREOF SHALL BE GOVERNED BY AND
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS.

Counterpart Execution. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original and all of which
together shall constitute one and the same document. Signature pages may be
detached from the counterparts and attached to a single copy of this Agreement
to physically form one document.

PREPAYMENT. Notwithstanding any contrary provision which may be contained in the
note, Borrower shall have the right at any time and from time to time, to prepay
all or any part of the principal of the Note, for which right Borrower shall
also pay a penalty equal to a percentage of the prepayment amount. Prior to the
first anniversary date of the Note, penalty shall be 3%. After the first
anniversary date of the Note and after each successive anniversary date
thereafter, the penalty previously in effect shall reduce by one percent (1%).
Partial prepayments shall be applied to installments of principal in the inverse
order of maturity and will not reduce the amount or time of payment of the
remaining installments.

PAYMENT ADJUSTMENTS. Notwithstanding any other provisions of the Note, on each
anniversary date of this Note prior to maturity beginning in 2002; each, an
"Adjustment Date" , the amount of monthly installments of principal and interest
thereafter due and payable shall be adjusted to an amount sufficient to amortize
the unpaid principal balance on such Adjustment date (after
<PAGE>

giving effect to any payment due on such date), at the interest rate then in
effect, in equal monthly installments of principal and interest over an assumed
term which begins on such date and ends on the anniversary date of this Note in
2011 provided however, that in no event shall any monthly payment be less than
the amount of the accrued but unpaid interest under this Note as of such payment
due date.

EACH PARTY HERETO ACKNOWLEDGES HAVING READ ALL THE PROVISIONS OF THIS AGREEMENT,
AND EACH AGREES TO ITS TERMS.

GRANTOR:

COLONIAL FULL SERVICE CAR WASH, INC.

BY:  /s/ Gregory M. Krzemien
     -----------------------
      GREGORY M. KRZEMIEN, TREASURER

LENDER:

Bank One, NA with its main office in Chicago, Illinois

BY:  /s/ Mark W. Warren
     ------------------
Name & Title: Mark W. Warren, Sr. Vice President
              ----------------------------------

________________________________________________________________________________
                           CORPORATE ACKNOWLEDGMENT

STATE OF New Jersey
COUNTY OF Gloucester

This instrument was acknowledged before me on August 6, 2001 by GREGORY M.
KRZEMIEN, TREASURER of COLONIAL FULL SERVICE CAR WASH, INC., a Texas
corporation, on behalf of said corporation.

                                       /s/ Holly J. Hensley
                                       ----------------------------------
                                       Notary Public, State of New Jersey
______________________________________________________________________________
                             LENDER ACKNOWLEDGMENT

STATE OF Texas
COUNTY OF Tarrant

This instrument was acknowledged before me on August 7, 2001 by Mark W. Warren,
Sr. Vice President, of Bank One, NA with its main office in Chicago, Illinois, a
national banking association, on behalf of said association.

                                           /s/ Brenda Via
                                         ---------------------------------------
                                         Notary Public, State of Texas
<PAGE>

                           NOTICE OF FINAL AGREEMENT

<TABLE>
-----------------------------------------------------------------------------------------------------------------
  Principal     Loan Date      Maturity     Loan No.     Call   Collateral      Account      Officer    Initials
<S>            <C>           <C>           <C>          <C>     <C>          <C>            <C>         <C>
$1,797,918.91    08-20-2001    08-20-2004                               410     1744079801       50945
-----------------------------------------------------------------------------------------------------------------

 References in the shaded area are for Lender's use only and do not limit the applicability of this document to
 any particular loan or item.
-----------------------------------------------------------------------------------------------------------------
</TABLE>

<TABLE>
<S>                                                    <C>
Borrower:  Colonial Full Service Car Wash, Inc.        Lender:  Bank One, NA with its main office in Chicago, Illinois
           1000 Crawford Place, Suite 400                       Arlington-Bowen Banking Center - Arlington
           Mt. Laurel, NJ 08054-3932                            1301 S. Bowen Rd.
                                                                Arlington, TX 76013
</TABLE>

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

 THE WRITTEN LOAN AGREEMENT REPRESENTS THE FINAL AGREEMENT BETWEEN THE PARTIES
 AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR
 SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN ORAL
 AGREEMENTS BETWEEN THE PARTIES.

 As used in this Notice, the following terms have the following meanings:

     Loan. The term "Loan" means a loan, an extension of credit or other
     financial accommodations, or the renewal, modification or extension of any
     of the foregoing, by Bank One, NA with its main office in Chicago, Illinois
     to Borrower for $1,797,918.91.

     Parties. The term "Parties" means Bank One, NA with its main office in
     Chicago, Illinois and any and all entities or individuals who are obligated
     to repay all or any part of the Loan or have pledged property as security
     for the Loan, including without limitation those parties signing below.

     Written Loan Agreement. The term "Written Loan Agreement" means any
     agreements, instruments or documents relating to the Loan that have been
     executed or may hereafter be executed by any of the Parties.
--------------------------------------------------------------------------------

This Notice of Final Agreement is given by Bank One, NA with its main office in
Chicago, Illinois pursuant to Section 26.02 of the Texas Business and Commerce
Code. Each Party who signs below, other than Bank One, NA with its main office
in Chicago, Illinois, acknowledges, represents, and warrants to Bank One, NA
with its main office in Chicago, Illinois that is has received, read and
understood this Notice of Final Agreement. This Notice is dated August 20, 2001.

BORROWER:

COLONIAL FULL SERVICE CAR WASH, INC.

BY:  /s/ Gregory M. Krzemien
     -----------------------
      GREGORY M. KRZEMIEN, TREASURER

GUARANTOR:

MACE SECURITY INTERNATIONAL, INC.

BY:  /s/ Gregory M. Krzemien
     -----------------------
      GREGORY M. KRZEMIEN, TREASURER

LENDER:

Bank One, NA with its main office in Chicago, Illinois

BY:  /s/ Mark W. Warren
     ------------------
     Authorized Officer

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