Lance Cpl. Coy Allen, an infantry rifleman with Bravo Company, 1st Battalion, 24th Marine Regiment, 4th Marine Division, plots his map points while conducting a land navigation course during their annual training exercise on Camp Grayling, Mich., Aug. 19, 2020. The training and readiness manual is the Marine Corps’ primary tool for the planning, execution, and evaluation of training, and assessing unit readiness. (U.S. Marine Corps photo by Lance Cpl. Leslie Alcaraz)