Capt. James M. Kenney-Prentiss (front), battalion adjutant with 6th Communications Battalion, Force Headquarters Group, Marine Forces Reserve, leads his Marines on a hike through the trails at the Muscatatuck Urban Training Center in Butlerville, Ind., June 10, 2016. The Marines battled hills and weather conditions during the hike and pushed each other to finish strongly. (U.S. Marine Corps photo by Lance Cpl. Melissa Martens/ Released)