U.S. Marine Cpl. Conor Griebling, a machine gun team leader with Golf Company, 2nd Battalion, 24th Marine Regiment, 4th Marine Division, rests and looks over the rugged terrain of his bivouac site during Mountain Exercise (MTX) 4-21 at Mountain Warfare Training Center, Bridgeport, California, July 24, 2021. Marines of 2/24 attended MTX to hone their skills operating in the high altitudes and strenuous terrain of mountainous environments. (U.S. Marine Corps photo by Lance Cpl. Andrew R. Bray)