PMEL
Staff Sgt. Steven Umana, 56th Component Maintenance Squadron Precision Measurement Equipment Laboratory (PMEL) journyeman, evaluates Airman 1st Class David Munn, 56th Component Maintenance Squadron PMEL apprentice, April 7 on his ability to correctly perform an input power safety inspection. This inspection is required on every piece of electrical and electronic support equipment that enters PMEL. (U.S. Air Force photo by Senior Airman Tracie Forte)