Seriously, The X-37B (OTV) program was built on earlier industry and government efforts by DARPA, NASA and the Air Force, and was led by the U.S. Air Force Rapid Capabilities Office, in partnership with NASA and the Air Force Research Laboratory.

The X-37 is a reusable robotic spaceplane. It carries Optimus Prime as the OTV stand for -- Orbital TRANSFORMER Vehicle. Something wrong with Wikipedia maybe?