170228-N-HQ322-060 BOSTON (Feb. 28, 2017) Boatswain's Mate 2nd Class Robert Montgomery, assigned to the USS Constitution, walks through the catacomb underneath Boston's historic Old North Church. The USS Constitution Museum, Columbia College, and Naval History and Heritage Command are conducting a twelve-week training course about Constitution's history. (U.S. Navy photo by Gunner's Mate 3rd Class Erin Bullock/Released)