191102-N-HH853-0103 KEYPORT, Wash. (Nov. 2, 2019) Retired U.S. Navy Rear Adm. Samuel J. Cox, Director of Naval History and Heritage Command and curator of the Navy, speaks during Deep Sea Day at the United States Naval Undersea Museum (USNUM). USNUM is dedicated to educating the public about the U.S. Navy’s undersea operations, technology, combat, research, and salvage operations. (U.S. Navy photo by Mass Communication Specialist 3rd Class Emilia Hilliard/Released)