A secret space plane that has been years in the making is now set to launch into the final frontier. The United States Air Force plans to launch the X-37B or...
Secret Missions of the X-37B
X-37B Orbital Test Vehicle-3 Lands at Vandenberg AFB
X-37 ALTV Test Flight (2010)
Launch of X-37B Mini Space Shuttle on OTV-3 Mission
X-37B: Secret space plane