OTV-3
From Spacefaring
USA-240, also referred to as Orbital Test Vehicle 3 (OTV-3), is the second flight of the first Boeing X-37B, an American unmanned robotic vertical-takeoff, horizontal-landing spaceplane. It was launched to low Earth orbit aboard an Atlas V rocket from Cape Canaveral on 11 December 2012. Its mission designation is part of the USA series.