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.
Named by President George Washington after the Constitution of the United States of America, she is the oldest commissioned naval vessel afloat in the world.[Note 2] Launched in 1797, Constitution was one of the six original frigates authorized for construction by the Naval Act of 1794.