The result of the usafs advanced tactical fighter atf program the aircraft was designed primarily as an air superiority fighter but also has ground attack electronic warfare and signal intelligence capabilities. The lockheed martin f 22 raptor is a fifth generation single seat twin engine all weather stealth tactical fighter aircraft developed for the united states air force usaf. Several countries have announced the development of a sixth generation aircraft program including the united states china united kingdom italy russia japan germany spain taiwan and france.