What is located at the "Intrepid" Sea, Air & Space Museum and was built for NASA but is not capable of spaceflight?
Intrepid Sea, Air &amp; Space Museum:  The museum showcases the aircraft carrier USS "Intrepid" , the submarine USS "Growler" , a Concorde SST, a Lockheed A-12 supersonic reconnaissance plane, and the Space Shuttle "Enterprise". Space Shuttle Enterprise:  Rolled out on September 17, 1976, it was built for NASA as part of the Space Shuttle program to perform atmospheric test flights after being launched from a modified Boeing 747. Space Shuttle Enterprise:  It was constructed without engines or a functional heat shield, and was therefore not capable of spaceflight.
Space Shuttle "Enterprise"