Ensign Zoe Riis-Fallica fires an M240 machine gun under Petty Officer 2nd Class Peter Jordan's supervision on the USCGC Stone (WMSL 758) well off the coast of Brazil on Feb. 8, 2021. Members of the Stone's combat systems department tested both the weapons and their mounts for full functionality. (U.S. Coast Guard photo by Petty Officer 3rd Class John Hightower)