U.S. Navy Lt. Paul B. Rodgers, right, chaplain, 1st

U.S. Navy Lt. Paul B. Rodgers, right, chaplain, 1st Battalion, 6th Marine Regiment (1/6), 2nd Marine Division (MARDIV), hikes up the side of landing zone mean peak to visit U.S. Marine Corps Lance Cpl. Timothy L. Green, left, rifleman, Bravo Company, 1/6, MARDIV, at his observation post, during the final field exercise of Mountain Exercise 5-15, Marine Corps Mountain Warfare Training Center, Bridgeport, Calif., Sept.23, 2015. Marines participate in a month-long field exercise focusing on core mission essential tasks such as assault climbing, animal packing and small unit movements, to strengthen expeditionary high altitude warfare tactics in a mountainous environment against a hybrid threat, as they prepare for world-wide deployment. (U.S. Marine Corps photo by Cpl. Kelly L. Street, 2D MARDIV COMCAM/Released)