A U.S. soldier throws a grappling hook toward a wire obstacle during the culminating live-fire exercise of Exercise Rising Thunder at Yakima Training Center, Wash., Sept. 21, 2015. The U.S. soldier is assigned to the 2nd Infantry Division’s 4th Battalion, 23rd Infantry Regiment, 2nd Stryker Brigade. U.S. Army photo by Sgt. Eliverto Larios