Search and rescue crews on November 25 prepared to deploy a US Navy deep sea vehicle in the hunt for the Argentine Navy submarine ARA San Juan, missing since November 15.The US Navy’s submarine rescue unit and Argentine technicians installed the Submarine Rescue Diving and Recompression System on the vessel Sophie Siem in preparation for the launch of the “deep diving rescue vehicle” to aid in the search for the missing submarine. Credit: DVIDS/Lt Courtney Callaghan via Storyful