● Pratt & Whitney Aircraft ● Pratt & Whitney Canada-PWA Turbojet Engines ● General Electric-Aircraft Engines ● Boeing D6-17487 ● Bell Helicopter ● Rolls Royce ● TRW ● Allison Gas Turbine Engines ● New United Motors Manufacturing Co. ● Babcock & Wilcox-Nuclear Equipment Division ● United Airline & Boeing specifications for Interior & Exterior Cleaning ● United States Environmental Protection Agency ● Honeywell Engines & Systems ● Martin Maretta Energy System ● Lockheed Missile & Space Company ● Raytheon Missile Systems ● Gooddyear Tire & Rubber Company