M1 Abrams Tank reloading

Army Sgt. Ryan Duginski, right, with the Tennessee Army National Guard’s H Troop, 2nd Squadron, 278th Armored Cavalry Regiment, hands a training Sabot round to Pfc. Harlan Troutman, with the same unit, as they prepare their M1A1 Abrams tank for the day’s events while competing in the Gen. Gordon Sullivan Cup best tank crew competition at Fort Benning, Ga., Tuesday, May 3, 2016. The Sullivan Cup tests tank crews from throughout the Army on everything from gunnery to mounted land navigation, maintenance and combat casualty care in a variety of physically and mentally challenges setting to determine the Army’s best tank crew.