Air Force sends Boeing's mystery shuttle back to space

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Secret Spaceplane
  • X-37B launch
  • X-37B launch
  • X-37B launch
  • X-37B
  • Secret Spaceplane
  • 120616-F-AC130-004
  • Secret Space Plane
Secret Spaceplane
This April 5, 2010 photo made available by the U.S. Air Force via NASA shows the X-37B Orbital Test Vehicle at the Astrotech facility in Titusville, Fla. Half of the Atlas V five-meter fairing is in the background. On Tuesday, Dec. 11, 2012, the Air Force launched the top-secret, unmanned mini-space shuttle from Cape Canaveral, Fla. (AP Photo/U.S. Air Force via NASA)