Fuel efficiency
A KC-10 Extender from the 908th Expeditionary Air Refueling Squadron refuels an aircraft Feb. 1, 2010, over Afghanistan, during Operation Enduring Freedom air refueling operations. Air Mobility Command aircraft like the KC-10 are involved in several initiatives by AMC Fuel Efficiency Office officials to save fuel for the command and the Air Force. (U.S. Air Force photo/Capt. Sean Chuplis)