Shell casings lay on the deck after a MK-75 gunnery exercise on the USCGC Mohawk (WMEC 913) while underway in the Atlantic Ocean, Sept. 10, 2022. The MK-75 gun is a fully automated gun that stows, aims, and fires 76mm ammunition. (U.S. Coast Guard photo by Petty Officer 3rd Class Jessica Fontenette)