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.
There exist a number of former US Navy ships which are museum ships, some of which may be US government owned. One of these, the USS Constitution, a three-masted tall ship, is kept as a commissioned ship of the US Navy (and hence is listed here), as a special commemoration for that ship alone.