High Quality Content by WIKIPEDIA articles! USA-212 was the first flight of the Boeing X-37B Orbital Test Vehicle 1 (X-37B OTV-1), an American unmanned robotic vertical-takeoff, horizontal-landing (VTHL) spaceplane. It was launched aboard an Atlas V rocket from Cape Canaveral on 22 April 2010, and operated in low Earth orbit. Its designation is part of the USA series.