May 20, 2017 - U.S. Marine Corps Recuit Trinity Treanell, platoon 4020, Oscar Company, 4th Recruit Training Battalion, goes through an obstacle while conducting the Combat Endurance Course on Parris Island, SC. Oscar and Golf Company went through the Combat Endurance Course which consists of a 2.5 mile run with obstacles and scenarios along the way to improve small unit leadership among the recruits. (U.S. Marine Corps photo by Cpl. Richard Currier)