2AC, Group & Zero

U.S. Army Cadet Colin Watkins, Niagara University, aims his M4 rifle during the group and zero exercise at Fort Knox, Ky., June 12, 2023. Cadets practice the fundamentals of shooting such as group and zero, an exercise to prepare them for weapons qualifications. | Photo by Jaden Whiteman, Ball State University, CST Public Affairs Office

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