Dr. Donald Erbschloe, Air Mobility Command chief scientist, and Col. Keith Boone, AMC Fuel Efficiency Division chief, talk to Tahan Pangaribuan, Solar Impulse flight director assistant, June 6, 2013, at Lambert-St. Louis International Airport about the aircraft and the advanced technologies used to develop and maintain it. As part of the Department of Defense’s efficiency initiative, AMC is always on the lookout for innovative, cost-effective solutions to augment mission effectiveness. (U.S. Air Force photo/Maj. Angela O’Connell)