3M - Manufacturing.

AM General - Ground vehicles.
Bath Iron Works - Shipbuilding.
Bechtel - Electronic equipment.
Bell Helicopter (Textron) - Helicopters.
Boeing (North American McDonnell Douglas) - Aircraft, missile systems
  and electronic components.
Bofors - Weapons.
Colt Firearms - Firearms.
Department of Energy Hanford Site - Nuclear energy and fuel production.
Dräger - Underwater and aerospace breathing systems.
Electric Boat - Submarine construction.
FMC - Ground vehicles and weapon systems.
General Dynamics (Bath Iron Works, Electric Boat) - Aircraft, submarines
  and surface vessels, tanks, and electronic components.
General Electric - Electronic components and systems.
Halliburton Company - Oceanographic and deep water drilling technology.
Heckler & Koch - Firearms.
Hewlett-Packard - Computers and electronic equipment.
Honeywell - Aircraft components and electronic systems.
Hughes Electronics - Electronic systems.
IBM - Computers and electronic equipment.
Ingalls Shipbuilding - Shipbuilding.
Kirby Morgan Diving Systems International - Diving and underwater
  equipment.
Lawrence Livermore National Laboratory - Nuclear and high energy physics.
Leupold - Optics.

Lockheed-Martin - Aircraft, weapons systems and electronic components.
Loral - Electronics, communications and space technology.
Loran - Electronics and navigation equipment.
Mitre - Electronic systems and GPS technology.
Mossberg - Firearms.
Motorola - Electronic and communications equipment.
NASA Jet Propulsion Lab - Rocket and Space technology.
Newport News Shipbuilding - Ship construction.
Northrop-Grumman - Aircraft, electronic systems, drones and UAVs.
Rockwell - Aircraft and land system components, electrical systems.
Raytheon - Electronic and weapon systems.
Remington - Ammunition and firearms.
Rolls Royce - Power plants and aircraft systems.
SIGarms - Firearms.
Sikorsky - Helicopters and aircraft.
Springfield Armory - Firearms and optics.
Texas Intruments - Electronic systems, optics and weapon systems.
Textron - Power plants.
TRW - Electronic systems, communications systems and satellite
  technology.
United Defense - Ground vehicles, weapon systems and electronic systems.
United Technologies Inc. (Pratt & Whitney) - Aircraft components and power
  plants.
Westinghouse - Nuclear power and electrical systems.
Winchester - Ammunition.
Woods Hole Oceanographic Institution - Undersea technologies.