The LTV A-7 Corsair II are at reality a light assault aircraft on the basis of the F-8 Crusader. The A-7 was at reality one of the primary 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 aside from the united states Air Force, and soon after utilizing the Air nationwide Guard. It was additionally exported to Southern Vietnam (through Vietnam War), Greece (A-7H), Portugal(A-7P), and Thailand (in belated 1980s)