170723-N-SM577-256 BOSTON (July 23, 2017) USS Constitution floats in Dry Dock One of the Boston Navy Yard while the dry dock finishes flooding. Over the past 26-months, Constitution has undergone an extensive restoration that will help to preserve America's Ship of State for many decades to come. (U.S. Navy photo by Mass Communication Specialist Seaman Casey Scoular/Released)