GROTON, Conn. (Dec. 18, 2022) The Virginia-class fast-attack submarine USS South Dakota (SSN 790) transits the Thames River during a homecoming event at Naval Submarine Base New London in Groton, Conn. South Dakota returned to homeport after a five-month deployment in support of the chief of naval operations’ maritime strategy. South Dakota and crew operate under Submarine Squadron (SUBRON) FOUR and its primary mission is to provide attack submarines that are ready, willing, and able to meet the unique challenges of undersea combat and deployed operations in unforgiving environments across the globe. (U.S. Navy photo by Chief Mass Communication Specialist Joshua Karsten)