U.S. Air Force Reserve Master Sgt. Benjamin Hamilton, production supervisor, 913th Maintenance Squadron, provides instruction on an Aircraft Marshaller’s positioning to Senior Airman Steven Firmin, 913 MXS, during an engine-running onload/offload (ERO) Oct. 14, 2017, at Little Rock Air Force Base, Ark. The ERO was part of a training sortie that included picking up passengers for an incentive flight. (U.S. Air Force photo by Master Sgt. Jeff Walston/Released)