U.S. Marine Corps Lance Cpl. Billy Laird, a machine

U.S. Marine Corps Lance Cpl. Billy Laird, a machine gunner with Company B, 1st Battalion, 4th Marine Regiment, Marine Rotational Force – Darwin (MRF-D), scans the surrounding area from above for simulated enemies during exercises comprising military operations in urban terrain (MOUT), in Mount Bundey Training Area, Northern Territory, Australia, May 23. Marines execute MOUT training in order to stay tactically proficient in military capabilities. MRF-D displays the competencies of the Marine Air-Ground Task Force with Australian allies. (U.S. Marine Corps photo by Lance Cpl. Makenzie Fallon/Released)