U.S. Marine Corps Lance Cpl. Shane D. Listisen, an airframes mechanic assigned to Marine Attack Training Squadron 203, inspects the cockpit of an AV-8B Harrier during a routine maintenance check at Marine Corps Air Station Cherry Point, N.C., March 24, 2015. AV-8B Harriers undergo regular maintenance checks to ensure all parts on the aircraft function properly in order to maintain operational readiness. (U.S. Marine Corps photo by Lance Cpl. Koby I. Saunders/Released)