PACIFIC OCEAN (Nov. 23, 2020) Hospital Corpsman 3rd Class Spencer Moore, right, administers an influenza vaccination to Marine Corps Staff Sgt. Dylan Nelson, a launcher chief, both with the High Mobility Artillery Rocket System Detachment, Battalion Landing Team 1/4, 15th Marine Expeditionary Unit, aboard the amphibious transport dock ship USS Somerset (LPD 25) during a medical readiness event. The Makin Island Amphibious Ready Group and the 15th MEU are currently conducting routine operations in the U.S. 3rd Fleet area of operations. (U.S. Marine Corps photo by Staff Sgt. Kassie McDole)