NAVAL BASE GUAM (Dec. 1, 2025) – Crew members assigned to the Republic of Korea (ROK) Submarine Ahn Mu (SS 085) participate in a submarine training evolution during a visit to Naval Submarine Training Center Pacific (NSTCP) Detachment Guam, Dec. 1, 2025. Ahn Mu is visiting Guam as part of Exercise Silent Shark 2025. Organized by Commander, Submarine Group 7 (CSG-7), Silent Shark is a long-standing bilateral exercise designed to strengthen interoperability and theater anti-submarine warfare between the U.S. and ROK. CSG-7 directs forward-deployed, combat-ready undersea forces across the Western Pacific, Indian Ocean, and Arabian Sea under U.S. 7th Fleet. Portions of the image are changed due to security concerns. (U.S. Navy photo by Mass Communication Specialist 1st Class Karri Langerman)