U.S. Air Force Senior Airman Tiffany Schenk, 4th Component Maintenance Squadron intermediate avionics specialist, removes a flight control computer from an interface tester on Seymour Johnson Air Force Base, N.C., Jan. 8, 2013. The avionics shop uses interface testers to pin-point faulty components on all equipment that comes through their shop. (U.S Air Force photo/Airman 1st Class Gino Reyes/Released)