171019-M-TC241-004 OKINAWA, Japan (Oct. 19, 2017) Hospital Corpsman 3rd Class Matthew Lewis, assigned to the 3rd Marine Logistics Group, III Marine Expeditionary Force, administers a flu shot to a Marine at Camp Hansen's base theater in Okinawa, Japan. The shot was administered during ShotEx, an annual event held to keep Marines healthy by getting their vaccinations early in the fiscal year. (U.S. Marine Corps photo by Lance Cpl. Andrew Neumann/released)