U.S. Marines assigned to 2d Low Altitude Air Defense Battalion and 1st Battalion, 10th Marine Regiment, bow their heads in prayer during Operation Rolling Thunder, at Fort Bragg, N.C., Oct. 27, 2014. The operation was held in order to better integrate the ground combat element with the aviation combat element in support of the Marine Air Ground Task Force. (U.S. Marine Corps photo by Lance Cpl. Koby I. Saunders/Released)