Private First Class Jeffry Brunning, 19, a combat engineer

Private First Class Jeffry Brunning, 19, a combat engineer with Marine Wing Support Squadron 373, Combat Engineer Platoon, from Spring Lake, N.C., cuts a piece of a 4-inch by 2-inch wooden board to erect a multipurpose building (SWA hut) during exercise Pacific Horizon 2015 aboard Marine Corps Base Camp Pendleton, Calif., Oct. 21. The SWA hut would serve as shelter, billeting or medical facility in a humanitarian aid or disaster relief mission. PH 15 is a scenario driven, simulation supported crisis response exercise designed to improve 1st Marine Expeditionary Brigade's and Expeditionary Strike Group 3's interoperability and strengthen Navy-Marine Corps relations by conducting an in-stream Maritime Prepositioning Force offload of equipment by providing host country civil-military security assistance, and by conducting infrastructure restoration support from Oct. 20-28. (U.S. Marine Corps photo by Cpl. Rick Hurtado / Released)