Puget Sound Naval Shipyard from 2004 to 2006 in Bremerton, Washington, Columbus returned to Submarine Squadron Seven in Pearl Harbor. She departed in March 2008 for a regularly scheduled six-month deployment with the Seventh Fleet. Columbus supported national taskings and theater security cooperation efforts while making port visits in Saipan, Guam, Okinawa, Sasebo, and Yokosuka, Japan. In January 2009 Columbus was awarded the Submarine Squadron Seven Battle Efficiency (Battle "E") award, given to the submarine crew that best demonstrates technical proficiency and continual mission readiness throughout the previous year. In July 2009 Admiral Gary Roughead, the Chief of Naval Operations, announced that Columbus was the Pacific Fleet winner of the 2008 Arleigh Burke Fleet Trophy. Columbus returned to Pearl Harbor, Hawaii, in August 2012 after completing a six-month deployment that included Seventh Fleet and national mission tasking along with port visits to Japan, South Korea, and Guam. Columbus arrived in the South Korean southern port city of Busan on 3 March 2014 as a part of a scheduled deployment in the Western Pacific. In September 2017, Columbus returned to Pearl Harbor from a six-month deployment having performing three national tasking periods, two theater operation periods, and a multinational exercise. Columbus also enjoyed four port visits, including Singapore and Guam. Awards 1995 Pacific Fleet Golden Anchor Award Red Engineering "E" Yellow Medical "M" 1996 Meritorious Unit Commendation 1997 Supply Blue "E" 1998 Pacific Fleet Silver Anchor Award Engineering "E" Deck Seamanship 2002 Red Green Navigational "N" 2003 Navy Unit Commendation Tactical "T" Communications "C" 2004 Medical "M" 2008 Department of the Navy Safety Excellence Award Damage Control 'DC', Navigation 'N', Communications 'C', and Supply Blue 'E' Arleigh Burke Fleet Trophy Squadron 7 Battle "E" Efficiency Award Meritorious Unit Commendation 2012 Squadron 7 Battle "E" Efficiency Award 2014 Communications 'C', Information Dominance 'I', and Weapons 'W' References External links Ships built in Groton, Connecticut Los Angeles-class submarines Nuclear submarines of the United States Navy 1992 ships Submarines of the United States