Commandos in the bin Laden raid may have flown a top-secret stealth helicopter. What iconic U.S. stealth fighter was unveiled to the world in 1988?

The Lockheed F-117A Nighthawk became famous for its bombing raids during the first Persian Gulf war. The fighter's angular, "flying wing" design captured the imagination of aeronautics enthusiasts. The F-117 was retired in 2008 and replaced operationally by the F-22 Raptor.