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Hand Grenade Assault Course
Army Drill Sergeant, Staff Sergeant Jonathan Martin, C Company, 1st Battalion, 61st Infantry Regiment watches as a Solider in basic combat training tosses a practice grenade from the kneeling position on the hand grenade assault course at Fort Jackson, S.C., Feb. 1, 2016. (U.S. Army photo by Sgt. 1st Class Brian Hamilton)