GROTON, Conn. (Sept. 27, 2021) Cmdr. Adam Zaker, incoming commanding officer the Virginia-class submarine USS South Dakota (SSN 790), delivers remarks during a change-of-command ceremony for onboard Naval Submarine Base New London in Groton, Conn. South Dakota and crew operate under Submarine Squadron (SUBRON) FOUR and its primary mission is to provide fast-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)