U.S. Air Force Senior Airman Michael Smith, 1st Maintenance Squadron aerospace propulsion technician, observes an automated test on a Pratt and Whitney F119 engine at Langley Air Force Base, Va., July 22, 2015. The automated tests are used to find faults and identify the specific repairs needed. (U.S. Air Force photo by Airman 1st Class Derek Seifert/Released)