Founded in 1942, Aerojet Ordnance Tennessee is one of the leading manufacturers of defense armaments and spacecraft propulsion products for low-thrust earth storable engines and systems. The company serves the missile, space propulsion and armaments markets. It manufactures fire extinguishers for the US Military aircraft. Aerojet Ordnance Tennessee develops lightweight and nontoxic fire protection systems for a variety of applications that include aircraft dry bays, engine nacelles, ground vehicle engines, underbody and crew compartments and marine applications. In addition, it offers propulsion control systems that provide directional control for critical missile defense applications. The company is located in Jonesborough, Tenn., and is a subsidiary of GenCorp, one of the leading technology-based manufacturers of aerospace and defense products and systems.