U.S. Marine Corps Capt. Michael Moore, an infantry

U.S. Marine Corps Capt. Michael Moore, an infantry officer with Headquarters Company, 2nd Marine Regiment, 2nd Marine Division, posts security during a Command Post Exercise during Mountain Training Exercise 1-21 (MTX) at Marine Corps Mountain Warfare Training Center, Bridgeport, California, Oct. 26, 2020. MTX is a service level training exercise teaching Marines to effectively work in extreme conditions such as weather and terrain. The Marines worked together to establish a fully functioning command operation center in preparation for a five-day field operation. (U.S. Marine Corps Photo by Lance Cpl. Sarah Hediger)