Lance Cpl. Sean Wyatt, a rifleman with Bravo Company, 1st Battalion, 24th Marine Regiment, 4th Marine Division, prepares a M18A1 Claymore mine for detonation during an annual training exercise on Camp Grayling, Mich., Aug. 11, 2020. The training and readiness manual establishes standards, regulations and policies regarding the training of Marines to ensure they can go, fight, and win our nation’s battles. (U.S. Marine Corps photo by Lance Cpl. Leslie Alcaraz)