A U.S. Coast Guard member of Port Security Unit (PSU) 308 mans a M240 machine gun near South Padre Island, Texas, Nov. 2, 2025. PSU 308 utilizes M240 machine guns to deter drug and human trafficking along the Mexican-American border as they patrol the Brownsville Shipping Channel in support of Operation River Wall. (U.S. Coast Guard photo by Petty Officer 3rd Class Cheyenne Basurto)