Airman 1st Class Noah Romero, 4th Operations Support Squadron air traffic control apprentice, practices using a light gun to direct aircraft and vehicles that do not have communication with the ATC tower at Seymour Johnson Air Force Base, North Carolina, Oct. 2, 2020. The signals are memorized by air crew members and those who drive on the flightline. (U.S. Air Force photo by Airman 1st Class Kimberly Barrera)