APRA HARBOR, Guam (Dec. 18, 2021) A diver from the Republic of Korea Navy (ROKN) Underwater Construction Team (UCT) enters the water during the Multinational Underwater Repair Exercise (MUREX) 2021 in Apra Harbor, Guam, Dec. 20, 2021. This is the first-ever MUREX, an exercise designed to develop interoperability in underwater construction operations, build diving expertise, and foster camaraderie between the ROKN UCT and the U.S. Navy’s UCT-2 and Mobile Diving and Salvage Unit ONE (MDSU-1). (U.S. Navy photo by Information Systems Technician 2nd Class Michael Czuprynski)