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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 poses for a photo outside during a base wide clean-up event. Sandbags were filled up by Sailors to prepare for hurricane season as part of a volunteer event in recognition of Earth Day.. (U.S. Navy photo by Mass Communications Specialist Seaman Jimmy Ivy III/Released)