Maybe not just american companies. Here are a few more from
wiki.
* 3D Global Solutions (Website)[20]
* Aedion
* Alpha Point Security (Website) Armed Security, UAV-Intelligence
(ISR) and Consulting... defense against piracy, terrorists and
rebels.
* AQMI Strategy Corp
* Black- Op's (pmc) (Website)
* Blackwater USA (Website)
* Braddock Dunn & McDonald (BDM) long-established defense
contractor purchased in mid-1990s by TRW and onsold to Northrop
Grumman in December 2002
* C3 Defense, Inc. (Website)
* CACI - California Analysis Center, Incorporated
* Critical Intervention Services paramilitary Security Agency based
out of Clearwater, Fl.
* Berodt Dynamics, Defence contractor from Iowa
* Defion Internacional, (Website)
* DynCorp, (Website)
* Eastern Cross
* Elite Security Corps
* ITT Corporation
* ISCS International
* International Security Instructors, (Website)
* Kellogg Brown and Root - Division of Halliburton
* Landmine Sourcing - Global PMC Recruiters (Website)
* Military Professional Resources Inc. (MPRI) (Website)
* ManTech International Corporation
* Northbridge Services Group
* Northrop Grumman
* Overwatch Protection Solutions International, (Website)
* Paratus World Wide Protection, (Website)
* Ronin Worldwide Executive Protection, LLC, (Website)
* Raytheon
* SCG International Risk (Website)
* Sharp End International (Website) - who use mainly Australian and
New Zealand ex-special forces instructors
* SkyLink USA, affiliated with SkyLink Aviation [21]
* SOS Temps, Inc founded by former Navy Seal Richard
Marcinko.
* Spartan Consulting Group (Website)3
* Tactical Response Services paramilitary Security Agency based out
of Tampa, Fl.
* Titan Corporation
* Top Cat Marine Security (Website)
* Triple Canopy, Inc. (Website)
* Vinnell Corporation
* VIP Investigations & Protective Services Inc. (Website)
* EUBSA BV Inc. STOP units - Special Tactics and OPerations
(Website)
* Pathfinder Security Services
* Adson Holdings, (registered in Guernsey) owners of Sandline
International
* Aegis Defence Services, (Website)
* AKE Group, (Website)
* Armor Group, (Website)
* Black- Op's (pmc), (website)
* Branch Energy Ltd, (registered in the Isle of Man)
* Corporate Warriors - Division of the Brillstein Security Group,
(Website)
* Defence Services Ltd,
* Erinys International, joint South Africa-Britain
* Gurkha Security Guards, (registered in Guernsey)
* Hart Security Limited
* Hostile Control Tactics, (Website)
* Sandline International (ceased operations on April 16,
2004)
* Plaza 107
* Securiforce
* Black- Op's (pmc) Private Military Solutions Division,
Cyprus([2])
* Diamond Works, Canada (purchased Branch Energy in 1996)
* Executive Outcomes, South Africa (ceased operations on January 1,
1999)
* Levdan - Israel
* Meteoric Tactical Solutions, South Africa
* Olive Group (Website)
* Omega Group - Norway
* Omega Security Solutions -South Africa
* Sharp End International (website)
* Strategic Resources Corporation, South Africa
* OMEGA SERVICES pmc- Russia/Ukraine. Ex- Russian SpN VMF, PDSS,
Marines personnel. (Website)
* Praesidia Defence, Germany (Website)
* Greystone Ltd (Website)