The LTV A-7 Corsair II was indeed a light attack aircraft on the basis of the F-8 Crusader. The A-7 completed up being among the many main combat aircraft to feature a head-up display (HUD). doppler-bounded inertial navigation system, and a turbofan engine. It served with both usa Navy because the usa Air Force, and immediately after with all the current Air nationwide Guard. It had been additionally exported to Southern Vietnam (through the Vietnam War), Greece (A-7H), Portugal(A-7P), and Thailand (in the belated 1980s)