U.S. Marines with Special-Purpose Marine Air-Ground

U.S. Marines with Special-Purpose Marine Air-Ground Task Force Crisis Response-Africa carry a tree during a combat efficiency test in Baumholder, Germany, March 10, 2015. U.S. Army Special Forces personnel ran the service members through a grueling course of obstacles that required the Marines to work as a team and prepared them physically and mentally for crisis response missions they may face in places such as Africa. (U.S. Marine Corps photo by Sgt. Paul Peterson/Released)