U.S. Marine Corps Lance Cpl. Joshua R. Ward, a team leader assigned to Alpha Battery, 2d Low Altitude Air Defense Battalion, cleans an M240B machine gun during Operation Rolling Thunder, at Fort Bragg, N.C., Oct. 18, 2014. The operation was held in order to better intergrate 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)