180620-N-SM577-0091 BOSTON (June 20, 2018) Ship’s riggers assigned to Navy History and Heritage Command, Detachment Boston, move USS Constitution’s lower foremast yard onto cap blocks before putting the yard back into place. USS Constitution is America’s Ship of State and the oldest commissioned warship afloat in the World. (U.S. Navy photo by Mass Communication Specialist 3rd Class Casey Scoular/Released)