Vought F4U Corsair
The Vought F4U Corsair was a fighter aircraft that fought in World War II and the Korean War.  Vought could not keep up with demand for the aircraft, so Goodyear and Brewster made them. It was deployed in large numbers starting in 1944, and has longest production run of any piston-engined fighter in U.S. history (1942–1953).