U.S. Marine Corps Lance Cpls. Kyle Adams (left), and

U.S. Marine Corps Lance Cpls. Kyle Adams (left), and Marc Zepeda, aircraft ordnance technicians, Marine Light Attack Helicopter Squadron 169, Marine Aircraft Group 39, 3rd Marine Aircraft Wing, load 20mm target-practice tracer rounds into an M197 electric cannon on a Bell AH-1Z Viper Attack Helicopter at Marine Corps Air Station Camp Pendleton, California, Oct. 2, 2018. An aircraft ordnance technician’s duties include inspecting and loading ammunition, repairing armament equipment and arming or de-arming aircraft. (U.S. Marine Corps photo by Lance Cpl. Kerstin Roberts)