Staff Sgts. Chris Brown, left, and Sarah Hall perform a preflight inspection on a C-17
Staff Sgts. Chris Brown, left, and Sarah Hall perform a preflight inspection on a C-17 at Charleston Air Force Base, S.C. on Oct. 27. This inspection helps ensure the C-17 is fully operational when the crew arrives. Sergeants Brown and Hall are aircraft maintenance craftsman with the 437th Aircraft Maintenance Squadron.(U.S. Air Force photo/Tech. Sgt. Larry A. Simmons)