437th AW Airmen perform C-17 pre-flight checks
Airman 1st Class Trae Williams, 16th Airlift Squadron loadmaster, inspects the engines of a C-17 Globemaster III as pilots perform pre-flight engine checks July, 30, 2013, at Joint Base Charleston– Air Base, S.C. (U.S. Air Force photo/Airman 1st Class Michael Reeves)