A United Launch Alliance Atlas V rocket with the Air Force's Orbital Test Vehicle (OTV) launches from Cape Canaveral, Florida, April 22, 2010. The point of the project, started by NASA in the late 1990s and later adopted by the military, is to test a next-generation space shuttle -- the world's only reusable operational spaceship -- to try to trim time between flights and cut costs, said Gary Payton, Air Force deputy undersecretary for space programs.
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