The LTV A-7 Corsair II ended up being a light assault aircraft in line with the F-8 Crusader. The A-7 have been among the main combat aircraft to feature a head-up display (HUD). doppler-bounded inertial navigation system, and a turbofan engine. It served using the usa Navy as well as the united states of america Air Force, and after with all the Air nationwide Guard. It ended up furthermore exported to Southern Vietnam (through Vietnam War), Greece (A-7H), Portugal(A-7P), and Thailand (in belated 1980s)