Silhouette Warmup Marine Corps recruits warm up before maneuvering through an obstacle course at Marine Corps Recruit Depot Parris Island, S.C., May, 20, 2017. Marine Corps photo by Lance Cpl. Colby Cooper SHARE IMAGE: Download Image: Full Size (1.06 MB) Tags: training, Northcom, Northern Command, MARINE CORPS, MARINES Photo By: Lance Cpl. Colby Cooper VIRIN: 170520-M-UR592-031C.JPG Photo Gallery