The 2012 Lockheed Martin F-22 Raptor is a single-seat,twin-engine fifth-generation supermaneuverable opponent aircraft that uses stealth knowledge. It was designed 2012 Lockheed Martin F-22 Raptor primarily as an air superiority fighter, but has additional capabilities that include ground attack, electronic warfare, and signals intelligence roles. 2012 Lockheed Martin F-22 Raptor aeronautics is the prime contractor and is responsible for the majority of the airframe, weapon systems and final congress of the F-22. Curriculum partner Boeing Defense, Space & Security provides the wings, aft fuselage, avionics integration, and training systems.The 2012 Lockheed Martin F-22 Raptor aircraft was variously designated F-22 and F/A-22 during the years prior to formally entering USAF service in December 2005 as the F-22A. Despite a protracted and costly development period, the United States Air Force considers the F-22 a critical component of US tactical air power, and claims that the aircraft is unmatched by any known or projected fighter, while Lockheed Martin claims that the Raptor's combination of stealth, speed, agility, precision and situational awareness, combined with air-to-air and air-to-ground combat capabilities, makes it the best overall fighter in the world today. The 2012 Lockheed Martin F-22 Raptor high cost of the aircraft, a lack of clear air-to-air combat missions because of delays in the Russian and Chinese fifth-generation fighter programs, a US ban on Raptor exports, and the ongoing development of the planned cheaper and more versatile F-35 resulted in calls to end F-22 production.