365th Training Squadron F-16 avionics course Airmen test controls of the F-16 Fighting Falcon training jet at Sheppard Air Force Base, Texas, Sept. 26, 2018. The Airman in the flight deck is testing the avionics systems for the flaps for the jet’s wings while his wingman behind the jet watches to spot and make sure that each wing responds correctly. (U.S. Air Force photo by Airman 1st Class Pedro Tenorio)