The LTV A-7 Corsair II was at reality a light assault aircraft based on the F-8 Crusader. The A-7 was at fact among the first combat aircraft to feature a head-up display (HUD). doppler-bounded inertial navigation system, and a turbofan motor. It served with both usa Navy in addition to the usa Air Force, and soon after using the Air nationwide Guard. It absolutely was also exported to Southern Vietnam (through Vietnam War), Greece (A-7H), Portugal(A-7P), and Thailand (in belated 1980s)