The Medicare Coverage Database (MCD) contains all National Coverage Determinations (NCDs) and Local Coverage Determinations (LCDs), local articles, and proposed NCD decisions.
USS CONSTITUTION. The Constitution--called Old Ironsides because cannonballs could not penetrate her tough oak sides--was one of the first of the original six frigates that made up the U.S. Navy. A 44-gun frigate built at the Edmond Hartt Shipyard, Boston, MA, in 1797.
Old Ironsides (poem) topic  Old Ironsides  is a poem written by American writer Oliver Wendell Holmes Sr. , on September 16, 1830, as a tribute to the eighteenth-century frigate USS Constitution . Thanks in part to the poem, she was saved from being decommissioned and is now the oldest commissioned ship in the world still afloat.