| U.S. Department of State (DoS) | American Systems Corporation |
| Maryland Transportation Authority (MTA) | Northrop Grumman |
| DOI/United States Park Service | Siemens |
| Washington Metropolitan Area Transit Authority (WMATA) | ManTech International |
| Department of Defense, Department of the Navy | Lockheed Martin |
| United States Air Force, 45th Space Wing | Johnson Controls (JCI) |
| Department of Homeland Security | Tyco/ADT |
| General Services Administration (GSA) | Stanley Security Solutions |
| US Army Corps of Engineers | Grunley-Walsh |
| New Technology Management, Inc. | Smiths Detection LiveWave |