Capt. Lindsey Bauer, aircraft commander; 1st Lt. Jen Carter, pilot; and Staff Sgt. Sarah Lockley, flight engineer, from the 908th Expeditionary Air Refueling Squadron in Southwest Asia, participate in an “unmanned” aerial refueling mission in the KC-10 Extender, Aug. 2, 2011. The deployed environment admittedly is a mostly male world. For a day though, the deployed KC-10 crew made it an all-female day, as all four crew positions were held by females, truly making their mission "unmanned." This crew composition is rare because Lockley is the only female KC-10 flight engineer in the Air Force. (U.S. Air Force photo/Staff Sgt. Patrick Mitchell)