Staff Sgt. Diana Jimenez, right, 362nd Training Squadron F-16 crew chief apprentice course instructor, talks to a student while inside an F-16 Fighting Falcon aircraft at Sheppard Air Force Base, Texas, July 2, 2019. Jimenez is showing the student the lights operations check checklist and shows him which ones are done in the flightdeck. (U.S. Air Force photo by Airman 1st Class Pedro Tenorio)