Also exciting is the USAF F22 Raptor, a single-seat, twin-engine, all-weather stealth tactical fighter aircraft developed for the USAF. The aircraft was designed as an air superiority fighter, but also with ground attack, electronic warfare, and signals intelligence capabilities. The prime contractor, Lockheed Martin, built most of the F-22's airframe and weapons systems and conducted final assembly, while Boeing provided the wings, aft fuselage, avionics integration, and training systems.   The end of this segment