Tech. Sgt. Arthur Lewis, 403rd Maintenance Squadron aerospace propulsion technician, evaluates Senior Airman Daniel Johnson, 403rd MXS aerospace propulsion technician, on performing an engine acceptance inspection on Jan. 11 in the Roberts Aircraft Maintenance Facility. Johnson conducted this inspection prior to the engine installation onto the WC130-J aircraft. (U.S. Air Force photo/Master Sgt. Jessica Kendziorek)