362nd Training Squadron F-16 crew chief apprentice course students look around at Sheppard Air Force Base, Texas, July 2, 2019. The students are performing a lights operations check and have to find the light that corresponds to the ones the instructor in the flightdeck is switching on or off. In this class though, the students are only learning where each light is. (U.S. Air Force photo by Airman 1st Class Pedro Tenorio)