U.S. Marines with Combat Logistics Battalion 15 and Battalion Landing Team 3rd Battalion 1st Marine Regiment, 15th Marine Expeditionary Unit build the frame of a Southwest Asia hut during a simulated foreign humanitarian assistance mission during Composite Training Unit Exercise (COMPTUEX) aboard Camp Pendleton, Calif., March 27, 2015. CLB-15, the 15th MEU’s logistics combat element, is training to be able to provide humanitarian assistance and engineering support ashore when they deploy in the spring. (U.S. Marine Corps photo by 1st Lt. Allison Burgos/Released)