Robertson Fuel Systems, LLC, formerly known as Robertson Aviation, LLC, of Tempe, Arizona is the acknowledged world leader in fuel containment and ballistic tolerance, having designed, manufactured, and fielded over 4,500 crashworthy, ballistically self-sealing primary and auxiliary fuel systems for rotary and fixed winged aircraft and ground combat vehicles since 1976. In the 1960s, the company's founder, Dr. S. Harry Robertson, pioneered the development of crashworthy fuel systems. The company continues Dr. Robertson's research and develops, produces, and sustains systems that enhance the survivability of ground vehicles and aircraft.