Document:

<PAGE>   1

                                                                   Exhibit 10.29

                                 PROMISSORY NOTE

<TABLE>
<CAPTION>
------------------------------------------------------------------------------------------------------------
<S>                <C>             <C>            <C>         <C>        <C>        <C>        <C>
Principal          Loan Date       Maturity       Loan No     Call/Coll  Account    Officer    Initials
------------------------------------------------------------------------------------------------------------
$250,000.00        7-30-2001       9-11-2001
------------------------------------------------------------------------------------------------------------
</TABLE>

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. Any item above
containing "***" has been omitted due to text length limitations.

<TABLE>
--------------------------------------------------------------------------------------------
<S>                                                    <C>
Borrower:  Empyrean Bioscience, Inc.                   Lender:  The Huntington National Bank
           23800 Commerce Park Rd. Suite A                      Cleveland Commercial Lending
           Cleveland, OH  44122                                 P.O. Box 1558 - HZ0325
                                                                Columbus, OH  43272-4195
---------------------------------------------------------------------------------------------
Principal Amount: $250,000.00       Initial Rate:  7.750%       Date of Note: July 30, 2001
</TABLE>

PROMISE TO PAY. Empyrean Bioscience, Inc. ("Borrower") promises to pay to THE
HUNTINGTON NATIONAL BANK ("Lender"), or order, in lawful money of the United
States of America, the principal amount of Two Hundred Fifty Thousand & 00/100
Dollars ($250,000.00) together with interest on the unpaid outstanding principal
balance from July 30, 2001, until paid in full.

PAYMENT. Borrower will pay this loan in one principal payment of $250,000.00
plus interest on September 11, 2001. This payment due on September 11, 2001,
will be for all principal and all accrued interest not yet paid. Unless
otherwise agreed or required by applicable law, payments will be applied first
to accrued unpaid interest, then to principal, and any remaining amount to any
unpaid collection costs and late charges. The annual interest rate for this Note
is computed on a 365/360 basis; that is, by applying the ratio of the annual
interest rate over a year of 360 days, multiplied by the outstanding principal
balance, multiplied by the actual number of days the principal balance is
outstanding. Borrower will pay Lender at Lender's address shown above or at such
other place as Lender may designate in writing.

VARIABLE INTEREST RATE. The interest rate on this Note is subject to change from
time to time based on changes in an index which is the Huntington National Bank
Prime Commercial Rate. As used herein, Prime Commercial Rate shall mean the rate
established by the Bank from time to time based on its consideration of
economic, money market, business and competitive factors, and it is not
necessarily the Bank's most favored rate. Subject to any maximum or minimum
interest rate limitation specified herein or by applicable law, any variable
rate of interest on the obligation evidenced hereby shall change automatically
without notice to the undersigned immediately with each change in the Prime
Commercial Rate (the "Index"). The Index is not necessarily the lowest rate
charged by Lender on its loans and is set by Lender in its sole discretion. If
the Index becomes unavailable during the term of this loan, Lender may designate
a substitute index after notifying Borrower. Lender will tell Borrower the
current Index rate upon Borrower's request. The interest rate change will not
occur more often than each day. Borrower understands that Lender may make loans
based on other rates as well. The Index currently is 6.750% per annum. The
interest rate to be applied to the unpaid principal balance of this Note will be
at a rate of 1.000 percentage points over the Index, resulting in an initial
rate of 7.750% per annum. NOTICE: Under no circumstances will the interest rate
on this Note be more than the maximum rate allowed by applicable law.

PREPAYMENT. Borrower may pay without penalty all or a portion of the amount owed
earlier than it is due. Early payments will not, unless agreed to by Lender in
writing, relieve Borrower of Borrower's obligation to continue to make payments
of accrued unpaid interest. Rather, early payments will reduce the principal
balance due. Borrower agrees not to send Lender payments marked "paid in full",
"without recourse", or similar language. If Borrower sends such a payment,
Lender may accept it without losing any of Lender's rights under this Note, and
Borrower will remain obligated to pay any further amount owed to Lender. All
written communications concerning disputed amounts, including any check or other
payment instrument that indicates that the payment constitutes "payment in full"
of the amount owed or that is tendered with other conditions or limitations or
as full satisfaction of a disputed amount must be mailed or
<PAGE>   2

delivered to: The Huntington National Bank, Commercial Customer Support, 7450
Huntington Park Drive - HZ0326 Columbus, OH 43235.

LATE CHARGE. If a payment is 11 days or more late, Borrower will be charged
5.000% of the regularly scheduled payment.

INTEREST AFTER DEFAULT. Upon default, including failure to pay upon final
maturity, Lender, at its option, may, if permitted under applicable law,
increase the variable interest rate on this Note to 4.000 percentage points over
the Index. The interest rate will not exceed the maximum rate permitted by
applicable law.

DEFAULT. Each of the following shall constitute an event of default ("Event of
Default") under this Note:

     Payment Default. Borrower fails to make any payment when due under this
     Note.

     Other Defaults. Borrower fails to comply with or to perform any other term,
     obligation, covenant or condition contained in this Note or in any of the
     related documents or to comply with or to perform any term, obligation,
     covenant or condition contained in any other agreement between Lender and
     Borrower.

     False Statements. Any warranty, representation or statement made or
     furnished to Lender by Borrower or on Borrower's behalf under this Note or
     the related documents is false or misleading in any material respect,
     either now or any the time made or furnished or becomes false or misleading
     at any time thereafter.

     Insolvency. The dissolution or termination of Borrower's existence as a
     going business, the insolvency of Borrower, the appointment of a receiver
     for any part of Borrower's property, any assignment for the benefit of
     creditors, any type of creditor workout, or the commencement of an
     proceeding under any bankruptcy or insolvency laws by or against Borrower.

     Creditor or Forfeiture Proceedings. Commencement of foreclosure or
     forfeiture proceedings, whether by judicial proceeding, self-help,
     repossession or any other method, by any creditor of Borrower or by any
     governmental agency against any collateral securing the loan. This includes
     a garnishment of any of Borrower's accounts, including deposit accounts,
     with Lender. However, this Event of Default shall not apply if there is a
     good faith dispute by Borrower as to the validity or reasonableness of the
     claim which is the basis of the creditor or forfeiture proceeding and if
     Borrower gives Lender written notice of the creditor or forfeiture
     proceeding and deposits with Lender monies or a surety bond for the
     creditor or forfeiture proceeding, in an amount determined by Lender, in
     its sole discretion, as being an adequate reserve or bond for the dispute.

     Events Affecting Guarantor. Any of the preceding events occurs with respect
     to any Guarantor of any of the indebtedness or any Guarantor dies or
     becomes incompetent, or revokes or disputes the validity of, or liability
     under, any guaranty of the indebtedness evidenced by this Note.

     Change in Ownership. Any change in ownership of twenty-five percent (25%)
     or more of the common stock of Borrower.

     Adverse Change. A material adverse change occurs in Borrower's financial
     condition, or Lender believes the prospect of payment or performance of
     this Note is impaired.

     Insecurity. Lender in good faith believes itself insecure.

LENDER'S RIGHTS. Upon default, Lender may declare the entire unpaid principal
balance on this Note and all accrued unpaid interest immediately due, and then
Borrower will pay that amount.
<PAGE>   3

ATTORNEYS' FEES; EXPENSES. Lender may hire or pay someone else to help collect
this Note if Borrower does not pay. Borrower will pay Lender that amount. This
includes, subject to any limits under applicable law, Lender's attorneys' fees
and Lender's legal expenses, whether or not there is a lawsuit, including
attorneys' fees, expenses for bankruptcy proceedings (including efforts to
modify or vacate any automatic stay or injunction), and appeals. If not
prohibited by applicable law, Borrower also will pay any court costs, in
addition to all other sums provided by law.

JURY WAIVER. Lender and Borrower hereby waive the right to any jury trial in any
action, proceeding, or counterclaim brought by either Lender or Borrower against
each other.

GOVERNING LAW. This Note will be governed by, construed and enforced in
accordance with federal law and the laws of the State of Ohio. This Note has
been accepted by Lender in the State of Ohio.

CONFESSION OF JUDGMENT. Borrower hereby irrevocably authorizes and empowers any
attorney-at-law, including an attorney hired by Lender, to appear in any court
of record and to confess judgment against Borrower for the unpaid amount of this
Note as evidenced by an affidavit signed by an officer of Lender setting forth
the amount then due, attorneys' fees plus costs of suit, and to release all
errors, and waive all rights of appeal. If a copy of this Note, verified by an
affidavit, shall have been filed in the proceeding, it will not be necessary to
file the original as a warrant of attorney. Borrower waives the right to any
stay of execution and the benefit of all exemption laws now or hereafter in
effect. No single exercise of the foregoing warrant and power to confess
judgment will be deemed to exhaust the power, whether or not any such exercise
shall be held by any court to be invalid, voidable, or void; but the power will
continue undiminished and may be exercised from time to time as Lender may elect
until all amounts owing on this Note have been paid in full. Borrower waives any
conflict of interest than an attorney hired by Lender may have in acting on
behalf of Borrower in confessing judgment against Borrower while such attorney
is retained by Lender. Borrower expressly consents to such attorney acting for
Borrower in confessing judgment.

DISHONORED ITEM FEE. Borrower will pay a fee to Lender of $15.00 if Borrower
makes a payment on Borrower's loan and the check or preauthorized charge with
which Borrower pays is later dishonored.

RIGHT OF SETOFF. To the extent permitted by applicable law, Lender reserves a
right of setoff in all Borrower's accounts with Lender (whether checking,
savings, or some other account). This includes all accounts Borrower holds
jointly with someone else and all accounts Borrower may open in the future.
However, this does not include any IRA or Keogh accounts, or any trust accounts
for which setoff would be prohibited by law. Borrower authorizes Lender, to the
extent permitted by applicable law, to charge or setoff all sums owing on the
debt against any and all such accounts.

FINANCIAL STATEMENTS. Borrower agrees to furnish from time to time on the
request of the Lender true and complete financial statements and such other
information as the Lender may reasonably require.

PROCESSING FEE. Borrower shall pay to Lender on the date of this Note a
processing fee in the amount of $0.00. Lender and Borrower agree that the fee
shall be fully earned by Lender on the date of this Note.

PRIOR NOTE. This note is in renewal and replacement of a certain Promissory Note
dated March 16, 2001, in the original principal amount of 250,000.00 executed
and delivered by Borrower and Lender.

SUCCESSOR INTERESTS. The terms of this Note shall be binding upon Borrower, and
upon Borrower's heirs, personal representatives, successors and assigns, and
shall inure to the benefit of lender and its successors and assigns.

GENERAL PROVISIONS. If any part of this Note cannot be enforced, this fact will
not affect the rest of the Note. Borrower does not agree or intend to pay, and
Lender does not agree or intend to contract for, charge, collect, take, reserve
or receive (collectively referred to herein as "charge or collect"), any amount
in the nature of interest or in the nature of a fee for this loan, which would
in any way or event (including demand, prepayment, or acceleration) cause Lender
to charge or collect more for this loan than the
<PAGE>   4

maximum Lender would be permitted to charge or collect by federal law of the law
of the State of Ohio (as applicable). Any such excess interest or unauthorized
fee shall, instead of anything stated to the contrary, be applied first to
reduce the principal balance of this loan, and when the principal has been paid
in full, be refunded to Borrower. Lender may delay or forgo enforcing any of its
rights or remedies under this Note without losing them. Borrower and any other
person who signs, guarantees or endorses this Note, to the extent allowed by
law, waive presentment, demand for payment, and notice of dishonor. Upon any
change in the terms of this Note, and unless otherwise expressly stated in
writing, no party who signs this Note, whether as maker, guarantor,
accommodation maker or endorser, shall be released from liability. All such
parties agree that Lender may renew or extend (repeatedly and for any length of
time) this loan or release any party or guarantor or collateral; or impair, fail
to realize upon or perfect Lender's security interest in the collateral; and
take any other action deemed necessary by Lender without the consent of or
notice to anyone. All such parties also agree that Lender may modify this loan
without the consent of or notice to anyone other than the party with whom the
modification is made. The obligations under this Note are joint and several.

PRIOR TO SIGNING THIS NOTE, BORROWER READ AND UNDERSTOOD ALL THE PROVISIONS OF
THIS NOTE, INCLUDING THE VARIABLE INTEREST RATE PROVISIONS. BORROWER AGREES TO
THE TERMS OF THE NOTE.

BORROWER ACKNOWLEDGES RECEIPT OF A COMPLETED COPY OF THIS PROMISSORY NOTE.

--------------------------------------------------------------------------------
NOTICE: FOR THIS NOTICE "YOU" MEANS THE BORROWER AND "CREDITOR" AND "HIS" MEANS
LENDER.

WARNING - BY SIGNING THIS PAPER YOU GIVE UP YOUR RIGHT TO NOTICE AND COURT
TRIAL. IF YOU DO NOT PAY ON TIME A COURT JUDGMENT MAY BE TAKEN AGAINST YOU
WITHOUT YOUR PRIOR KNOWLEDGE AND THE POWERS OF A COURT CAN BE USED TO COLLECT
FROM YOU REGARDLESS OF ANY CLAIMS YOU MAY HAVE AGAINST THE CREDITOR WHETHER FOR
RETURNED GOODS, FAULTY GOODS, FAILURE ON HIS PART TO COMPLY WITH THE AGREEMENT,
OR ANY OTHER CAUSE.
--------------------------------------------------------------------------------

BORROWER:

EMPYREAN BIOSCIENCE, INC.

By: /s/ Brenda K. Brown
    -------------------
    Brenda K. Brown, Vice President and
    CFO of Empyrean Bioscience, Inc.<PAGE>   1
                                                                   EXHIBIT 10.28

                              SEVENTH AMENDMENT
                                      TO
                   THIRD AMENDED AND RESTATED CONSOLIDATED
              REPLACEMENT CREDIT FACILITY AND SECURITY AGREEMENT

            THIS SEVENTH AMENDMENT TO THIRD AMENDED AND RESTATED CONSOLIDATED
REPLACEMENT CREDIT FACILITY AND SECURITY AGREEMENT (this "Agreement") dated as
of July 2, 2001, is entered into by and between INTERNATIONAL TOTAL SERVICES,
INC., an Ohio corporation ("Borrower"), and BANK ONE, N.A., successor in
interest by merger to BANK ONE, CLEVELAND, N.A., a national banking association,
as agent bank for itself and for THE PROVIDENT BANK, an Ohio banking company
(collectively, the "Lender").

                                   WITNESSETH

            WHEREAS, the Borrower and the Lender are parties to that certain
Third Amended and Restated Consolidated Replacement Credit Facility and Security
Agreement dated as of March 31, 1997, as amended by that certain First Amendment
dated as of October 10, 1997, that certain Second Amendment dated as of December
16, 1998, that certain Third Amendment dated as of September 14, 1999, that
certain Fourth Amendment dated as of April 1, 2000, that certain Fifth Amendment
dated as of February 2001 and that certain Sixth Agreement dated as of April 1,
2001 (the "Loan Agreement"; all terms defined in the Loan Agreement being used
herein shall have the same meanings), pursuant to which the Lender has agreed to
make a $25,000,000 Revolving Loan to the Borrower until July 1, 2001, evidenced
by a Fourth Amended and Restated Replacement Promissory Note dated April 1, 2001
and payable to the Lender, such Note being payable on July 1, 2001; and

            WHEREAS, the Borrower and the Lender agreed to amend the Loan
Agreement (i) to extend the maturity date of the Revolving Loan to August 1,
2001; (ii) to modify the interest rate being paid to the Lender; and (iii) to
increase the maximum authorized borrowing cap to $26,500,000.

            NOW THEREFORE, in consideration of the foregoing and the mutual
covenants and agreements contained herein, and for other good and valuable
consideration, the receipt and sufficiency of which is hereby acknowledged, the
Borrower and the Lender agree as follows:

                                    AGREEMENT

Section 1.  Amendment of Loan Agreement.

            Except as expressly modified herein, all terms, conditions,
definitions and provisions of the Third Amended and Restated Consolidated
Replacement Credit Facility and Security Agreement and the First, Second, Third,
Fourth, Fifth and Sixth Amendments thereto, are in full force and effect.
<PAGE>   2
            1. The definitions of "Contract Rate" and "Notes" as set forth in
Section 1 of the Loan Agreement are, effective on the Effective Date (defined
below), hereby amended and restated to read as follows:

                  (A) Contract Rate - A fluctuating rate equals to three percent
            (3.00%) above the Base Rate;

                  (B) Notes - The Fifth Amended and Restated Replacement
            Promissory Note (Revolving Loan) and any other promissory note or
            other instrument evidencing Borrower's obligation to repay any
            Obligations.

            B. Subsections 2.3(A) and (B) of the Loan Agreement is, effective on
the Effective Date, amended and restated as follows:

                        (A) Revolving Loan. The reference to July 1, 2001, shall
                  be deleted and replaced with August 1, 2001.

                        (B) Payment. The reference to July 1, 2001, shall be
                  deleted and replaced with August 1, 2001.

            C. Subsection 2.3(C) of the Loan Agreement is, effective on the
Effective Date, amended and restated to read in its entirety as follows:

                        (C) The form of Borrower's Certificate attached to the
                  Loan Agreement as Exhibit A is, effective on the Effective
                  Date, hereby deleted, and the form of Borrower's Base
                  Certificate attached to this Agreement as Exhibit A is hereby
                  substituted therefor.

Section 2.  Effective Date of the Agreement.

            The effective date of this Agreement ("Effective Date") shall be
July 2, 2001 but Lender shall have no duty to fund until the date on which all
conditions precedent have been satisfied, or waived by the Lender in writing.

Section 3.  Conditions Precedent.

            Borrower hereby acknowledges and agrees that the effectiveness of
this Agreement is conditioned upon the receipt by the Lender, on or prior to the
date hereof, in form and substance satisfactory to the Lender and its counsel,
of the following:

            2. A certificate, dated as of the date hereof, signed by the
Secretary of Borrower certifying as follows:

                  (i) Borrower's Articles of Incorporation and Code of
            Regulations have not been modified or amended since June 17, 1997
            (or certifying that true, correct and complete copies of all such
            modifications and amendments are attached thereto); and

<PAGE>   3
                  (ii) Copies of resolutions of Borrower's Board of Directors
            are attached thereto with respect to the approval of this Agreement
            and of the matters contemplated hereby and authorizing the
            execution, delivery and performance of this Agreement and each other
            document, instrument, agreement or note to be delivered pursuant
            hereto; and

                  (iii) As to the incumbency and signatures of the officers of
            Borrower signing this Agreement and each other document, instrument,
            agreement or note to be delivered pursuant hereto.

            3. The Fifth Amended and Restated Replacement Promissory Note
(Revolving Loan) in the form of Exhibit B attached hereto, with all blanks
completed, duly executed and delivered by Borrower to Lender.

            4. An Acknowledgment, Consent and Agreement in the form of Exhibit C
attached hereto, with all blanks completed, duly executed and delivered by the
Guarantors as identified in Schedule 1 attached hereto to Lender.

            D. Such other documents, instruments, agreements and notes as the
Lender may reasonably request to implement this Agreement and the transactions
contemplated hereby and by the Loan Agreement.

Section 4.  Facility Fee.

            Contemporaneously with the execution of this Agreement, Borrower
shall pay to Lender a Facility Fee of $10,000 plus reasonable fees and expenses,
including but not limited to, attorney's fees, auditor's fees, etc.

Section 5.  References.

            On and after the Effective Date of this Agreement, each reference in
the Loan Agreement to "this Agreement", "hereunder", "hereof", or words of like
import referring to the Loan Agreement, and in the Note to the "Loan Agreement",
"thereof", or words of like import referring to the Loan Agreement, shall mean
and refer to the Loan Agreement and shall be deemed to refer to the form of
Borrowing Base Certificate attached hereto as Exhibit A. References to Exhibit
C-1 in the definition of "Revolving Note" in the Loan Agreement shall be deemed
to refer to the Note, a copy of which is attached hereto as Exhibit B. The Loan
Agreement, as previously amended and as amended by this Agreement, and all
Credit Documents are and shall continue to be in full force and effect and are
hereby and in all respects ratified and confirmed. References to the Loan
Agreement in the Note shall be deemed to include all amendments to the Loan
Agreement whether specified in the Note or not.

                                       3
<PAGE>   4
Section 6.  Applicable Law.

            This Agreement shall be deemed to be a contract under the laws of
the State of Ohio, and for all purposes shall be construed in accordance with
the laws of the State of Ohio.

Section 7.  Release.

            The Borrower hereby represents and warrants to the Lender, and
agrees with the Lender, that it has no claim or offset against, or defense or
counterclaim to, any Obligation or Indebtedness to the Lender under the Loan
Agreement or other Credit Documents and, in consideration of this Agreement, the
Borrower hereby releases and discharges the Lender and its shareholders,
directors, officers, employees, attorneys, affiliates and subsidiaries from any
and all claims, demands, liability and causes of action whatsoever, now known or
unknown, existing on the Effective Date and arising prior to the date hereof and
arising out of or in any way related to Obligations, the Loan Agreement, this
Agreement, or any security interest related thereto or the administration of the
Revolving Loan or any other Indebtedness of Borrower, the Guarantors, or any
Affiliate to the Lender.

Section 8.  Counterparts.

            This Agreement may be executed in any number of counterparts, all of
which taken together shall constitute one and the same instrument, and any one
of the parties hereto may execute this Agreement by signing any such
counterpart.

            IN WITNESS WHEREOF, the Borrower and the Lender have caused this
Agreement to be executed by their duly authorized officers as of the date and
year first above written.

BANK ONE, N.A.                                INTERNATIONAL TOTAL SERVICES, INC.

By: /s/ T. Steven Blake                       By: /s/ Michael Sosh
    -------------------                           ----------------
Name: T. Steven Blake                         Name: Michael Sosh
Title: First Vice President, Managed Assets   Title: Executive Vice President

                                       4
<PAGE>   5
                                   SCHEDULE 1

                               List of Guarantors

Domestic

            Crown Technical Systems, Inc. (Ohio)

            T.I.S. Incorporated (Texas)

            Certified Investigative Services, Inc. (Texas)

            I.T.S. of New York, Inc. (New York)

            Selective Detective Services, Inc. (New Jersey)

Foreign

            International Total Services, Ltd. (United Kingdom)

            International Transport Security, s.r.o. (Czech Republic)

            International Transport Services, Ltd. (Thailand)

                                       5
<PAGE>   6
                                    EXHIBIT A

                           Borrowing Base Certificate

                                 [SEE ATTACHED]

                                       6
<PAGE>   7
                           BORROWING BASE CERTIFICATE

At the close of business on _/__/__          Report # 479
                                             Date     _/__

<TABLE>
<CAPTION>

Collateral Status                               Computation
                                              Of Collateral
                                              -------------
<S>                                           <C>
1.  Balance (Domestic A/R)                          $_
2.  Less: Ineligible Collateral (Domestic)          $_
3.  Eligible Collateral                             $_
4.  Advance % rate                                  85%
5.  Net Availability                                $_
6.  Plus Sofa (not to exceed $3,000,000)            $_

      Total Availability

7.  Available - Not To Exceed $26,500,000           $_
8.  Less Reserves (Letters to Credit) #             $_
9.  NET                                             $_

Loan Status
10.   Previous Loan Balance                         $_
11.   Less: Collections                             $_
12. Add: Request for Funds                          $_
         Wire Transfers                             $_
          Other (interest, fees, etc.)              $_
13. New Loan Balance                                $_

14. Excess Available (Line 7-11)                    $_
</TABLE>

Borrower represents and warrants to Bank One, N.A. that all of the information
presented above and accompanying this Certificate is true, complete and correct
in every aspect as of the date hereof and has been computed in compliance with
the terms of the Third Amended and Restated Consolidated Replacement Credit
Facility and Security Agreement dated March 31, 1997, as amended through the
date hereof, between Bank One, N.A., and International Total Services, Inc. (the
"Credit Agreement"). In the event of any conflict between the terms of this
Certificate and the Credit Agreement, the terms of the Credit Agreement shall
control. Borrower further represents and warrants that as of the date hereof,
after giving effect to any loan or advance requested by Borrower
contemporaneously herewith, except as may have been otherwise expressly
disclosed in writing by Borrower to and received by Bank One N.A., that; (i)
there has been no material adverse change in Borrower's financial position,
operations or assets since the date of the latest financial statements of
Borrower delivered to Bank One, N.A.; (ii) to the extent that any loan or
advance requested contemporaneously herewith, or that is otherwise based upon
this certificate, will be used, in whole or in part, for the payment of wages,
Borrower has paid or deposited or is able to pay and intends to and shall make
timely payment or deposit of all taxes required to be deducted and withheld from
said wages; and (iii) all said wages incurred in the production of any inventory
included in this Certificate have been paid or will be timely paid. Borrower
acknowledges that Bank One is entitled to rely on this Certificate in making
loans and advances to Borrower.

--------------------------------------------------------------------------------
Borrower Name:             Authorized Signature:     Title:
International Total                                  EVP
Services, Inc.
--------------------------------------------------------------------------------
                           Prepared By:              Cash Mgmt. Dir.
                           -----------------------------------------------------

#Includes the reserve for Delta G-Max accounts and the FAA Fine Accrual.
<PAGE>   8
                                    EXHIBIT B

   Form of Fourth Amended and Restated Replacement Promissory Note (Revolving
                                      Loan)

                                 [SEE ATTACHED]
<PAGE>   9
                           FIFTH AMENDED AND RESTATED
                           REPLACEMENT PROMISSORY NOTE
                                (Revolving Loan)

$26,500,000                                                     Cleveland, Ohio
                                                                   July 2, 2001

            FOR VALUE RECEIVED, INTERNATIONAL TOTAL SERVICES, INC., a
corporation organized under the laws of the State of Ohio (hereinafter referred
to as the "Company"), promises to pay to the order of BANK ONE, N.A., successor
by merger to BANK ONE, CLEVELAND, N.A. (hereinafter referred to as the "Bank"),
the principal amount of Twenty-Six Million Five Hundred Thousand Dollars
($26,500,000), or such lesser amount as shall have from time to time been
borrowed by the Company, on August 1, 2001, or sooner as hereinafter provided,
with interest on the unpaid balance of said principal amount from the date
hereof at the Contract Rate, as defined in the Agreement hereinafter referred
to, which definition is hereby accepted by the Company, as the same may from
time to time be established.

            The Company agrees to pay interest on the unpaid principal amount
outstanding of this Note in monthly installments, commencing on the 1st day of
August, 2001 and continuing on the 1st day of each month thereafter. The unpaid
balance of the principal amount outstanding and all accrued interest thereon
shall be due and payable on August 1, 2001.

            Payments of both principal of and interest on this Note shall be
made in lawful money of the United States of America, at 600 Superior Avenue,
Cleveland, Ohio 44114, or at such other place as the Bank or any subsequent
holder hereof shall have designated to the Company in writing. Interest payable
on this Note shall be computed on a three hundred sixty (360) day per year basis
counting the actual number of days elapsed.

            This Note, in part, evidences, but does not extinguish or satisfy, a
pre-existing indebtedness of the Company to the Bank heretofore evidenced by a
$25,000,000 Third Amended and Restated Replacement Promissory Note dated April
1, 2000, a $25,000,000 Second Amended and Restated Replacement Promissory Note
dated September 14, 1999, a $30,000,000 Amended and Restated Replacement
Promissory Note (Revolving Loan) dated October 10, 1997 to the Bank, which note
was issued in substitution for that certain $10,500,000 Replacement Promissory
Note (Revolving Loan) dated March 31, 1997 to the Bank and is issued pursuant to
and is entitled to the benefits of a Third Amended and Restated Consolidated
Replacement Credit Facility and Security Agreement dated as of March 31, 1997,
as amended by that certain First Amendment to Third Amended and Restated
Consolidated Replacement Credit Facility and Security Agreement dated as of
October 10, 1997, that certain Second Amendment to Third Amended and Restated
Consolidated Replacement Credit Facility and Security Agreement dated as of
December 16, 1998 and that certain Third Amendment to Third Amended and Restated
Consolidated Replacement Credit Facility and Security Agreement dated September
14, 1999, that certain Fourth Amendment to Third Amended and Restated
Consolidated Replacement Credit Facility and Security Agreement dated April 1,
2000, that certain Fifth Amendment to Third Amended and Restated Consolidated
Replacement Credit Facility and Security Agreement dated February 2001, and that
certain Sixth Amendment to Third Amended and Restated Consolidated Replacement
Credit Facility and Security Agreement dated of April 1, 2001, each by and
between the Company and the Bank (collectively, the "Agreement"), to which
Agreement reference is hereby made for a statement of the rights and obligations
of the Bank and the duties and obligations of the Company in relation thereto;
but neither this reference to the

<PAGE>   10
Agreement nor any provisions thereof shall affect or impair the absolute and
unconditional obligation of the Company to pay the principal of or interest on
this Note when due.

            The Company may prepay all or any portion of this Note at any time
or times and in any amount only as provided in the Agreement.

            In case an Event of Default, as defined in the Agreement, shall
occur and be continuing beyond any applicable grace period, the principal of
this Note may be declared immediately due and payable at the option of the Bank.

            No delay on the part of any holder hereof in exercising any power or
rights hereunder shall operate as a waiver of any power or rights. Any demand or
notice hereunder to the Company may be made by delivering the same to the
address last known to the Bank, or by mailing the same to such address, with the
same effect as if delivered to the Company in person.

            The Company hereby authorizes any attorney-at-law to appear in any
court of record in the State of Ohio, or in any other state or territory of the
United States, at any time or times after the above sum becomes due, and waive
the issuance and service of process and confess judgment against it, in favor of
any holder of this Note, for the amount then appearing due, together with the
costs of suit, and thereupon to release all errors and waive all rights of
appeal and stay of execution. The foregoing warrant of attorney shall survive
any judgment, it being understood that should any judgment be vacated for any
reason, the foregoing warrant of attorney nevertheless may thereafter be used
for obtaining an additional judgment or judgments.

            "WARNING. BY SIGNING THIS PAPER YOU GIVE UP YOUR RIGHT TO NOTICE AND
COURT TRIAL. IF YOU DO NOT PAY ON TIME, A COURT JUDGMENT MAY BE TAKEN AGAINST
YOU WITHOUT YOUR PRIOR KNOWLEDGE AND THE POWERS OF A COURT CAN BE USED TO
COLLECT FROM YOU REGARDLESS OF ANY CLAIMS YOU MAY HAVE AGAINST THE CREDITOR
WHETHER FOR RETURNED GOODS, FAULTY GOODS, FAILURE ON HIS PART TO COMPLY WITH THE
AGREEMENT OR ANY OTHER CAUSE."

            This Note is executed at Cleveland, Cuyahoga County, Ohio.

INTERNATIONAL TOTAL SERVICES, INC.

                                          By: /s/ Mark D. Thompson
                                              Its: Chief Executive Officer
<PAGE>   11
                                    EXHIBIT C

                      Acknowledgment, Consent and Agreement

                                 [SEE ATTACHED]

                                       5
<PAGE>   12
                      ACKNOWLEDGMENT, CONSENT AND AGREEMENT

            The undersigned each hereby acknowledges receipt of a copy of the
Seventh Amendment to Third Amended and Restated Consolidated Replacement Credit
Facility and Security Agreement dated as of July 2, 2001, by and between
International Total Services, Inc. ("Borrower") and Bank One, N.A., successor by
merger to Bank One, Cleveland, N.A. ("Bank One") and by executing this
Acknowledgment, Consent and Agreement the undersigned each hereby agrees to
remain bound by the terms and conditions of its respective Amended and Restated
Replacement Guaranty Agreement, Guaranty Agreement, Amended and Restated
Replacement Guarantor Security Agreement and Guarantor Security Agreement, as
applicable, each dated as of August 11, 1995, executed and delivered to Bank One
in connection with the Second Amended and Restated Replacement Credit Agreement
dated as of August 11, 1995, as subsequently amended, and each other document
hereafter executed in connection herewith or therewith by the undersigned.

Dated: July 2, 2001                       CROWN TECHNICAL SYSTEMS, INC.

                                          By: /s/ Mark T. Thompson
                                              ---------------------------------
                                              Name:
                                              Title: Chairman of the Board

                                          T.I.S. INCORPORATED

                                          /s/ Mark T. Thompson
                                              ---------------------------------
                                              Name:
                                              Title: Chief Executive Officer

                                       6
<PAGE>   13
                                          CERTIFIED INVESTIGATIVE SERVICES, INC.

                                          By: /s/ Mark T. Thompson
                                              ---------------------------------
                                              Name:
                                              Title: Chief Executive Officer

                                          I.T.S. OF NEW YORK, INC.

                                          By: Mark T. Thompson
                                              ---------------------------------
                                              Name:
                                              Title: Chief Executive Officer

                                          SELECTIVE DETECTIVE SERVICES, INC.

                                          By: Mark T. Thompson
                                              ---------------------------------
                                              Name:
                                              Title: Chief Executive Officer

                                          INTERNATIONAL TOTAL SERVICES, LTD.

                                          By: Mark T. Thompson
                                              ---------------------------------
                                              Name:
                                              Title: Chief Executive Officer

                                       7
<PAGE>   14
                                          By: Mark T. Thompson
                                              ---------------------------------
                                              Name:
                                              Title: Chief Executive Officer

                                          INTERNATIONAL TRANSPORT SERVICES,
                                          LTD.

                                          By: Mark T. Thompson
                                              ---------------------------------
                                              Name:
                                              Title: Chief Executive Officer

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