Edwards AFB, Staff Sgt. Jonathan Young prepares to upload the X-51A WaveRider hypersonic flight test vehicle to a B-52 Stratofortress July 17 for fit testing. Representatives from the Air Force Research Laboratory, DARPA, Pratt & Whitney Rocketdyne and Boeing are partnering on the X-51A technology demonstrator program. (U.S. Air Force photo/Chad Bellay)
