A Polish Air Force MiG-21 'Fishbed,' fuselage number 4007, on static display at the Tennessee Museum of Aviation. Developed by the Soviet Union in the 1950s, the MiG-21 became one of the most widely produced supersonic jet fighters in history, serving with dozens of air forces worldwide, including several Warsaw Pact nations. The foreground Jeep, marked for the carrier USS Essex (CV-9), represents the flight-deck support equipment used aboard World War II-era aircraft carriers. Project: 219293