Dec. 2008, crew members assigned to the Military Sealift Command rescue and salvage ship USNS Grasp (T-ARS 51) hook a towing line to submarine NR-1 as the boat makes its way along the Thames River in Groton for the final time. The oldest nuclear-powered submarine in the U.S. Navy, NR-1, is being retired after nearly 40 years of service. U.S. Navy photo by John Narewski.