Senior Airman John Swank replaces the oil in a KC-135 Stratotanker engine during a thru flight inspection at the 379th Air Expeditionary Wing in Southwest Asia, Aug. 13, 2013. Swank is a 340th Expeditionary Aircraft Maintenance Unit crew chief deployed from Forbes Field Air National Guard Base, Kan., and a Topeka, Kan., native. (U.S. Ai Force photo/Senior Airman Bahja J. Jones)