The LTV A-7 Corsair II is 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 united states of america Navy besides the united states of america Air Force, and soon after using the Air nationwide Guard. It absolutely was additionally exported to Southern Vietnam (through Vietnam War), Greece (A-7H), Portugal(A-7P), and Thailand (in belated 1980s)