Originally Posted by
Carl Spackler
It's the North American XB-70 Valkyrie. The Air Force tested it with NASA, but I don't think it ever entered service.
Carl
Two were built for the Air Force by North American with one still on display at the AF Museum. The other one was in a photo shoot w/ other planes (3-5 fighters I think) when I believe the wake from the B70 caught a F-104 and the two planes collided, destroying both. Program cancelled shortly after.