Combat Training: Marine Corps Cpl. Anthony Skon closes his eyes and braces himself against the weight of a Marine climbing over him to scale a wall during the endurance course at the Jungle Warfare Training Center, Okinawa, April 19, 2015. Marines ran in 12-man squads over roughly five miles of Okinawa jungle and through 30 obstacles in JWTC’s culminating event, which helps to build upon what the Marines learned through the previous week of jungle warfare training. Skon and team leader is assigned to Company L, 3rd Battalion, 3rd Marine Regiment out of Marine Corps Base Hawaii. U.S. Marine Corps photo by Sgt. Matthew Callahan