A headspace and timing gauge rests in an M2 .50 caliber machine gun during Gunnery Skills Test (GST) on day 4 of the Sullivan Cup Competition, at Fort Benning, Ga., April 28, 2022. GST is designed to develop and test the proficiency of Abrams and Bradley crews, and individual armor crewmen on their ability to properly use and maintain their weapon systems and execute gunnery techniques. ( Army photo by Sgt. Reginald Harvey)

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Keywords: benning, bradley, crew, cup, fort, sullivan, tank