Military aviation evolved from the primitive military flying machines in service before the First World War and used for training in Texas City in 1913 to the highly sophisticated F-100F United States Air Force fighter used during the Vietnam conflict. Placed into service in 1957, this aircraft flew combat and training missions over Vietnam, Japan, Libya, and Germany. On loan from the United States Air Force at Davis Monthan Air Force Base, Arizona, it had a wingspan of 38 feet 9 inches, a length of 54 feet 3 inches, a maximum weight of 34,832 pounds, a maximum level speed of 864 miles per hour, a range of 1,500 miles, a crew of 2, was manufactured by North American, and originally cost $804,500.