Special Intelligence Service is a name of a dedicated & professional corporation who has been serving the most influential Government entities for decades. To name a few:
- United States Department of Defense (DoD)
- United States Department of State (DoS)
- United States Department of Commerce (DoC)
- United States Department of Homeland Security (DHS)
- United States Criminal Justice Program
- United States Congress
- United States Office of Inspector General
- United States Office Of Personnel Management
- United States Northern Command (NORTHCOM)
- United States Army North (USARNORTH)
- United States Army Intelligence & Security Command (INSCOM)
- United States Army Intelligence Center (USAIC)
- United States Army Network Enterprise Technology Command (NETCOM)
- United States Army Corps of Engineers (CoE)
- United States Naval Surface Warfare Center (NSWC)
- United States Air Force Center For Engineering & Environment (AFCEE)
- United States Diplomatic Security Service (DSS)
- United States Central Command (CENTCOM)
- United States Special Operations Command (SOCOM)
- United States Defense Intelligence Agency
- United States National Security Agency
- United States Central Intelligence Agency
- United States Federal Bureau Of Investigation
- United States Joint Interagency Task Force (JIATF)
- North American Aerospace Defense Command (NORAD)
- North Atlantic Treaty Organization (NATO)
- Joint Contracting Command Iraq/Afghanistan (JCC-I/A)
- Multi National Forces Iraq
- Coastal International Security
- Capitol Hill Club
- Northrup Grumman
- Raytheon
- Lockheed Martin
- General Dynamics
- CACI
- Calhoun International
- Lexmark
- Trasco
- TSG – Global Holdings
- Tetra Tech
- Bering Straits Corporation
- Delphi
- AllNet Corporation