Pat McCarthy calibrates a device used to check engine vibration on KC-135 Stratotankers at Fairchild Air Force Base, Wash., Nov. 5, 2013. McCarthy is a 92nd Maintenance Squadron Precision Measurement Equipment Laboratory lead technician and a Milwaukee native. PMEL is responsible for calibrating equipment used in virtually every phase of maintenance for nearly every piece of equipment the Air Force operates. (U.S. Air Force photo by Staff Sgt. Benjamin W. Stratton)
Benjamin W. Stratton 