364th Training Squadron aircraft electrical & environmental apprentice course students work on an F-16 Fighting Falcon at Sheppard Air Force Base, Texas, March 30, 2018. The students are conducting an operations check for the jet's defog system. The student pointing is communicating with his wingman in the flight deck as they work together to make sure the controls in the flight deck perform the correct actions. If not, the three Airmen on the ground will correct the problem. (U.S. Air Force photo by Airman 1st Class Pedro Tenorio)