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GROTON, Conn. (April 30, 2021) Naval Submarine Base (SUBASE) New London Commanding Officer Capt. Todd Moore and Naval Submarine School (SUBSCOL) Executive Officer Cmdr. Karl Hassenfratz participates in base wide clean-up onboard Naval Submarine Base (SUBASE) New London. SUBSCOL was one of many commands to help during a volunteer event focused on environmental cleanliness to recognize Earth Day. (U.S. Navy photo by Mass Communications Specialist Seaman Jimmy Ivy III/Released)