Master Sgt. Eric Walker loadmaster with the 315th Airlift Control Flight and Airman 1st Class Brian Jones, loadmaster with the 701st Squadron, review details for proper ground clearance before loading a Department of Homeland Security tractor trailer into a C-17 Globemaster III during airlift load certification training Oct. 28 at Joint Base Charleston, S.C. (U.S. Air Force Photo/ Airman 1st Class Robert Pilch)