A 32-foot Transportable Port Security Boat from U.S. Coast Guard Port Security Unit (PSU) 309 escorts the USNS GUAM as the ship enters the Port of Pohang during Combined Joint Logistics Over-the-Shore (CJLOTS) 26 in Pohang, South Korea, July 18, 2026. PSUs train to rapidly deploy worldwide to protect U.S. interests and assets, including ports, facilities, and designated naval and maritime administration vessels. (U.S. Coast Guard photo by Chief Petty Officer Andrew Resk)