From the most best stealth planes; to top secret helicopters caught on tape; These are 7 Abandoned and Declassified Black Projects.
7.B-2 Spirit Democracy Calls
6.Bird of Prey Proof of Concept
5.F-117 Nighthawk
4.Lockheed A-12
3.SR-71 The Blackbird
2. THE FUTURE
1.Stealth UH-60 Black Hawk