Pace Systems, Inc.

Gene Prorwicz

2040 Corporate Lane

Naperville IL 60563

630/395-2240

FAX: 773/409-5806

E-mail: gprorwicz@pace-systems.com

ABM Security Services

Michael W. Droschak

701 W. Warrenville Road, Suite 301

Lisle IL 60532

630/493-0116

FAX: 630/493-1825

E-mail: michael.droschak@abm.com

AlliedBarton Security Services

Carol Wennerstrom

1771 W. Diehl Rd., Suite 200

Naperville IL 60563

630/369-6761

FAX: 630/983-7119

E-mail: carol.wennerstrom@alliedbarton.com

Premier Security Corporation

Cathy Penrod

8750 W. Bryn Mawr Ave., Suite 1000

Chicago IL 60631

773/867-8832

FAX: 773/414-1316

E-mail: cpenrod@levysecurity.com

Security Partners International

Eric Lundt

P.O. Box 655

Prospect Heights IL 60070

630/629-6326

FAX: 630/629-4916

E-mail: elundt@sbcglobal.net

Titan Security Group/Titan Electronics, Inc.

Harry Bohn

1020 W. 31st Street

Downers Grove IL 60515

312/981-0237

FAX: 312/902-4651

E-mail: hbohn@titangrp.com