FACILITY C LOAN NOTE

FOR VALUE RECEIVED, ISI SECURITY GROUP, INC. , a Delaware corporation, (the “ Borrower ”), whose address is 12903 Delivery Drive, San Antonio, Texas 78247, promises to pay to the order of THE PRIVATEBANK AND TRUST COMPANY , an Illinois banking corporation (hereinafter, together with any holder hereof, the “ Bank ”), whose address is 70 W. Madison, 2 ^nd  floor, Chicago, Illinois 60602, on or before October 3, 2011 (the “ Facility C Scheduled Maturity Date ”), the principal sum of ten million and 00/100 dollars ($10,000,000.00), which amount is the principal amount of the Facility C Loan made by the Bank to the Borrower under and pursuant to that certain Loan and Security Agreement dated as of the date hereof, executed by and between the Borrower and the Bank, as amended from time to time (as amended, supplemented or modified from time to time, the “ Loan Agreement ”), together with interest (computed on the actual number of days elapsed on the basis of a 360 day year) on the principal amount of the Facility C Loan outstanding from time to time as provided in the Loan Agreement. Capitalized words and phrases not otherwise defined herein shall have the meanings assigned thereto in the Loan Agreement.

The outstanding principal of this Facility C Loan Note, and all accrued interest thereon, shall be payable as provided in the Loan Agreement, and the outstanding principal balance of this Facility C Loan Note, and all accrued and unpaid interest thereon, shall be due and payable in full on the Facility C Scheduled Maturity Date, unless payable sooner pursuant to the provisions of the Loan Agreement.

This Note evidences the Facility C Loan incurred by the Borrower under and pursuant to