170613-N-HQ322-005 BOSTON (June 13, 2017) USS Constitution sits in Dry Dock 1 at the Boston Navy Yard. The Square-rigged frigate is the world's oldest commissioned warship afloat and is nearing the end of a two-year restoration period. (U.S. Navy Photo by Gunner's Mate 2nd Class Erin Bullock/Released)