U.S. Marines assigned to Alpha Company, Battalion Landing Team, 1st Battalion, 6th Marine Regiment (BLT 1/6), 22nd Marine Expeditionary Unit, participate in an infantry immersion training exercise at Camp Lejeune, North Carolina December 14, 2015. BLT 1/6 conducted the training in preparation for a future deployment with the 22nd Marine Expeditionary Unit. (U.S. Marine Corps photo by Lance Cpl. Koby I. Saunders)