171120-N-TW634-031 COMODORO RIVADAVIA, Argentina (Nov. 20, 2017) Sailors assigned to Undersea Rescue Command (URC) and Argentines load submarine rescue equipment onto the Norwegian construction support vessel Skandi Patagonia. URC is the U.S. Navy's only submarine rescue unit, mobilized to support the Argentine government's search and rescue efforts for the Argentine Navy diesel-electric submarine A.R.A. San Juan (S 42). (U.S. Navy photo by Mass Communication Specialist 2nd Class Derek Harkins/Released)