The Medicare Coverage Database (MCD) contains all National Coverage Determinations (NCDs) and Local Coverage Determinations (LCDs), local articles, and proposed NCD decisions.
USS Constitution. Launched in Boston in 1797, the oldest commissioned warship afloat earned her nickname Old Ironsides during the War of 1812 when she fought the British frigate HMS Guerriere. During this historic battle, cannonballs fired at USS Constitution appeared to bounce off, causing one of her crew to remark that her sides were made of iron.
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.