Lance Cpl. Dylan Thornton, a rifleman with India Company, 3rd Battalion, 25th Marine Regiment, sit in the back of an Amphibious Assault Vehicle during Exercise Northern Strike at Camp Grayling, Mich., Aug. 8, 2018. Camp Grayling, the largest National Guard center in the country covering 147,000 acres, offers many large artillery, mortar, tank ranges and maneuver courses. (U.S. Marine Corps photos by Cpl. Niles Lee)