Avionics Airmen assigned to the 4th and 414th Aircraft Maintenance Squadrons prepare to test the threat detection systems on an F-15E Strike Eagle Oct. 13, 2015, at Seymour Johnson Air Force Base, North Carolina. The ALR-56C Radar Warning Receiver System requires testing every 180 days to ensure pilot safety. (U.S. Air Force photo/Senior Airman Aaron J. Jenne)