X-37B Orbital Test Vehicle-4 lands at Kennedy Space Center
The Air Force's X-37B Orbital Test Vehicle mission 4 lands at NASA 's Kennedy Space Center Shuttle Landing Facility, Fla., May 7, 2017. Managed by the Air Force Rapid Capabilities Office, the X-37B program is the newest and most advanced re-entry spacecraft that performs risk reduction, experimentation and concept of operations development for reusable space vehicle technologies. (U.S. Air Force courtesy photo)