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GROTON, Conn. (Feb. 25, 2020) Navy Diver 1st Class Mathew Villafuerte, left, and Navy Diver 2nd Class John McGuire, right, Basic Enlisted Submarine School (BESS) instructors on Naval Submarine Base New London, demonstrate proper submarine escape procedures using the Pressurized Submarine Escape Trainer. Naval Submarine School builds a foundation upon which officers and enlisted personnel are prepared to develop the competence and proficiency in skills necessary to operate and maintain their submarines. (U.S. Navy photo by Mass Communication Specialist 2nd Class Derien C. Luce/Released)