Marines assigned to the 15th Marine Expeditionary Unit run sprints on the flight deck of the amphibious assault ship USS Peleliu (LHA 5). Peleliu is the flagship for the Peleliu Amphibious Ready Group and, with the embarked 15th Marine Expeditionary Unit, is deployed in support of maritime security operations and theater security cooperation efforts in the U.S. 5th Fleet area of responsibility. (U.S. Navy photo by Mass Communication Specialist 3rd Class Derek Stroop/Released)