171126-N-TY130-001 COMODORO RIVADAVIA, Argentina (Nov. 26, 2017) Argentine Navy Capt. Perez Kuhn thanks the remaining crew of Undersea Rescue Command (URC) and the departing Sailors prior to the motor vessel Sophie Siem getting underway. The Sophie Siem carries the Submarine Rescue Diving and Recompression System (SRDRS) which operates the deep diving rescue vehicle, the Pressurized Rescue Module (PRM). Undersea Rescue Command, 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 ARA San Juan. (U.S. Navy photo by Lt. Karl Schonberg/Released)