The LTV A-7 Corsair II completed up being a light assault aircraft based on the F-8 Crusader. The A-7 finished up being one of several main combat aircraft to feature a head-up display (HUD). doppler-bounded inertial navigation system, and a turbofan motor. It served utilizing the usa Navy although the usa Air Force, and soon after utilising the Air nationwide Guard. It turned out additionally exported to Southern Vietnam (through Vietnam War), Greece (A-7H), Portugal(A-7P), and Thailand (inside belated 1980s)