LOAN AGREEMENT

This LOAN AGREEMENT is entered into this 30th day of September 2008, by and
between Argyle Security, Inc. a Delaware corporation (hereinafter "Lender"), and
ISI Security Group, Inc. a Delaware corporation (hereinafter "Borrower").

WHEREAS, Lender is the direct owner of all of the issued and outstanding capital
stock of Borrower; and

WHEREAS, Borrower desire to obtain a loan and other financial accommodations
from Lender and Lender is willing to provide such loan and accommodations all in
accordance with the terms of this Agreement.

NOW, THEREFORE, in consideration of the premises, and other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the
Lender and the Borrower do hereby agree as follows:

1.
THE LOAN

1.1.
The Loan. On the date hereof, the Lender agrees to make, subject to the
conditions hereof, and Borrower agrees to take, a Loan (hereinafter "Loan") in
the principal amount of Two Million Dollars ($2,000,000).

1.2.
The Note. Borrower shall execute a promissory note in favor of the Lender in a
form substantially similar to that completed promissory note attached hereto as
Exhibit A (hereinafter, "the Note") and payable to the order of the Lender. The
Note shall be dated the date of this Loan Agreement. The Note shall provide that
the principal of the Loan and all accrued and unpaid interest shall be repaid on
October 31, 2008.

1.3.
The Terms of the Loan. The aforesaid Loan shall be for a term of one month
commencing from the date of the Note. The principal balance of the Loan,
together with all interest accrued thereon, shall be payable monthly by Borrower
as required by the terms of this Loan Agreement and the Note.

1.4.
Rate and Payment of Interest. The aforesaid Note shall bear interest at the rate
of six percent (6%) per annum calculated on the basis of a 365-day year.
Interest shall be payable by Borrower upon the date for the repayment of
principal set forth in Section 1.2 above.

1.5.
Prepayments. The Borrower may prepay the Note in whole or in part with accrued
interest to the date of such prepayment on the amount prepaid, provided that
each partial prepayment shall be applied to the principal installments of the
Note, set forth in Section 1.2 hereof, in the inverse order of their maturities.

1.6
Waivers by Borrower. To the fullest extent permitted by applicable law, Borrower
waives: (a) presentment, demand and protest, and notice of presentment,
dishonor, intent to accelerate, acceleration, protest, default, nonpayment,
maturity, release, compromise, settlement, extension or renewal of the Loan
Agreement or this Note; (b) all rights to notice and a hearing prior to allowing
Lender to exercise any of its remedies; and (c) the benefit of all valuation,
appraisal and exemption laws.

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2.
DEFAULT

Upon the happening of any of the following events, each of which shall
constitute a default hereunder, Lender may declare that all liabilities of the
Borrower to the Lender under shall be accelerated and become immediately due and
payable; provided, that upon the occurrence of any default specified in Sections
(c) or (d) below, all liabilities of the Borrower to Lender shall become
immediately due and payable without declaration, notice or demand by Lender: (a)
failure of the Borrower (which shall include any endorser, surety or Guarantor)
to perform any material term, covenant, or agreement contained herein, which is
not cured within ten (10) days from the date of occurrence; (b) dissolution of
the Borrower; (c) filing of any petition in Bankruptcy by or against the
Borrower; (d) application by the Borrower for the appointment of a receiver, or
making of a general assignment for the benefit of creditors by, or insolvency of
the Borrower; or (e) determination by any officer of the Lender that a material
adverse change has occurred in the financial condition of the Borrower.

3.
MISCELLANEOUS

3.1.
Amendments, Etc. No amendment, modification, termination, or waiver of any
provision of this Loan Agreement and the Note (“Loan Documents”) nor consent to
any departure by the Borrower from any Loan Document, shall in any event be
effective unless the same shall be in writing and signed by the Lender, and then
such waiver or consent shall be effective only in the specific instance and for
the specific purpose for which given.

3.2.
No Waiver. No failure or delay on the part of the Lender in exercising any
right, power, or remedy hereunder shall operate as a waiver thereof; nor shall
any single or partial exercise of any such right, power, or remedy preclude any
other or further exercise thereof or the exercise of any other right, power, or
remedy hereunder. The rights and remedies provided herein are cumulative, and
are not exclusive of any other rights, powers, privileges, or remedies, now or
hereafter existing, at law or in equity or otherwise.

3.3.
Successors and Assigns. This Loan Agreement shall be binding upon and inure to
the benefit of the Borrower and the Lender and their respective successors and
assigns, except that the Borrower may not assign or transfer any of its rights
under any Loan Document to which the Borrower is a party without the prior
written consent of the Lender.

3.4.
Subordination. The obligations evidenced hereby are subordinate in the manner
and to the extent set forth in that certain Subordination Agreement (the
“Subordination Agreement”) dated as of September 30, 2008, by and between
Lender, and LaSalle Bank National Association, a national banking association
(“Senior Lender”) to the obligations (including interest) owed by the Borrower
to the holders of all of the notes issued pursuant to that certain Amended and
Restated Loan and Security Agreement dated as of January 23, 2008, between the
Borrower and Senior Lender, as such Agreement may be supplemented, modified,
restated or amended from time to time; and each holder hereof, by its acceptance
hereof, shall be bound by the provisions of the Subordination Agreement.

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3.5.
Integration. This Loan Agreement and the Loan Documents contain the entire
agreement between the parties relating to the subject matter hereof and
supersede all oral statements and prior writings with respect thereto.

3.6.
Governing Law and Jurisdiction. This Loan Agreement and the Note shall be
governed by, and construed in accordance with, the laws of the State of Texas
without regard to conflicts-of-laws principles that would require the
application of any other law. The parties hereby agree to submit any dispute
arising out of or in connection with the Loan Documents to the exclusive
jurisdiction of the courts of Bexar County in the State of Texas.

3.7.
Severability of Provisions. Any provision of any Loan Document which is
prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction,
be ineffective to the extent of such prohibition or unenforceability without
invalidating the remaining provisions of such Loan Document or affecting the
validity or enforceability of such provision in any other jurisdiction.

3.8.
Headings. Article and Section headings in the Loan Documents are included in
such Loan Documents for the convenience of reference only and shall not
constitute a part of the applicable Loan Documents for any other purpose.

3.9.
Jury Trial Waiver. THE LENDER AND THE BORROWER HEREBY WAIVE TRIAL BY JURY IN ANY
ACTION, PROCEEDING, CLAIM, OR COUNTERCLAIM, WHETHER IN CONTRACT OR TORT, AT LAW
OR IN EQUITY, ARISING OUT OF OR IN ANY WAY RELATED TO THIS AGREEMENT OR THE LOAN
DOCUMENTS. NO OFFICER OF THE LENDER HAS AUTHORITY TO WAIVE, CONDITION, OR MODIFY
THIS PROVISION.

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IN WITNESS WHEREOF, the undersigned have executed this Agreement on the date
herein stated.

ARGYLE SECURITY, INC.
   
By:
/s/ Donald F. Neville
Name: 
Donald F. Neville
Title:
Chief Financial Officer
       
ISI SECURITY GROUP, INC.
       
By:
/s/ Sam Youngblood
Name: 
Sam Youngblood
Title:
President

 
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EXHIBIT “A”
 
THE OBLIGATIONS EVIDENCED HEREBY ARE SUBORDINATE IN THE MANNER AND TO THE EXTENT
SET FORTH IN THAT CERTAIN SUBORDINATION AGREEMENT (THE “SUBORDINATION
AGREEMENT”) DATED AS OF SEPTEMBER 30, 2008, BY AND BETWEEN PARENT, AND LASALLE
BANK NATIONAL ASSOCIATION, A NATIONAL BANKING ASSOCIATION (“SENIOR LENDER”) TO
THE OBLIGATIONS (INCLUDING INTEREST) OWED BY OBLIGOR TO THE HOLDERS OF ALL OF
THE NOTES ISSUED PURSUANT TO THAT CERTAIN AMENDED AND RESTATED LOAN AND SECURITY
AGREEMENT DATED AS OF JANUARY 23, 2008, BETWEEN OBLIGOR AND SENIOR LENDER, AS
SUCH AGREEMENT MAY BE SUPPLEMENTED, MODIFIED, RESTATED OR AMENDED FROM TIME TO
TIME; AND EACH HOLDER HEREOF, BY ITS ACCEPTANCE HEREOF, SHALL BE BOUND BY THE
PROVISIONS OF THE SUBORDINATION AGREEMENT.
 
PROMISSORY NOTE

$2,000,000.00
September 30, 2008

 
FOR VALUE RECEIVED, ISI SECURITY GROUP, INC. a Delaware corporation,
(hereinafter called "Maker"), promises to pay to ARGYLE SECURITY, INC.
(hereinafter called "Lender"), the principal sum of Two Million Dollars
($2,000,000) with interest thereon at the rates and on the dates specified in
subsections 1.2 and 1.4 of the Loan Agreement between Maker and Lender dated
September 30, 2008 (the “Loan Agreement”).

Upon the happening of any default under the Loan Agreement, Lender may declare
that all liabilities of the Maker to the Lender under shall be accelerated and
become immediately due and payable; provided, that upon the occurrence of any
default specified in Sections 2(c) or (d) of the Loan Agreement, all liabilities
of the Maker to Lender shall become immediately due and payable without
declaration, notice or demand by Lender

Maker shall pay all reasonable and documented costs and expenses incurred by or
on behalf of Lender in connection with Lender’s exercise of any or all of its
rights and remedies under this Note, including, without limitation, reasonable
attorneys’ fees and expenses.
 
Any demand upon or notice to Maker shall be sufficiently served for all purposes
if personally delivered or placed in the mail addressed to the address shown
above or such other address as may be shown on Lender's records.

There will be no pre-payment penalty on this Note.

If any provision in this Note is held invalid or unenforceable by any court of
competent jurisdiction, the other provisions of this Note will remain in full
force and effect. Any provision of this Note held invalid or unenforceable only
in part or degree will remain in full force and effect to the extent not held
invalid or unenforceable.

This Note will be governed by and construed under the laws of the State of Texas
without regard to conflicts-of-laws principles that would require the
application of any other law. Any dispute arising out of or in connection with
this Note shall be submitted to the exclusive jurisdiction of the courts of
Bexar County in the State of Texas.

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To the fullest extent permitted by applicable law, Maker waives:
(a) presentment, demand and protest, and notice of presentment, dishonor, intent
to accelerate, acceleration, protest, default, nonpayment, maturity, release,
compromise, settlement, extension or renewal of the Loan Agreement or this Note;
(b) all rights to notice and a hearing prior to allowing Lender to exercise any
of its remedies; and (c) the benefit of all valuation, appraisal and exemption
laws.

IN WITNESS WHEREOF, Maker has executed and delivered this Note as of the date
first stated above.
 
ISI SECURITY GROUP, INC.
       
By:
 
Name:
Sam Youngblood
Title:
President

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