A B-52 Stratofortress takes off Dec. 15, 2006, from Edwards Air Force Base, Calif., on a flight-test mission using a blend of synthetic fuel and JP-8 in all eight engines. Maj. Gen. Curtis Bedke, Air Force Flight Test Center commander, piloted the test mission. General Bedke's flight marks the first time in 36 years a serving AFFTC commander has piloted a milestone test flight. (Photo by Tech. Sgt. Eric M. Grill)