"The Lockheed Martin F-22 Raptor entered US Air Force service in 200. Under 200 examples were built with production ending in late 2011. Despite the appearance of many new designs in the interim, an argument can still be made for the Raptor as the most advanced fighter aircraft on active duty today. The F-22 program cost the US government more than $60 billion and the aircraft generated great hype and scrutiny from the press. Some of its systems remain classified; and the plane is strictly prohibited from export to allied powers."--Page [4] of cover.