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.
150518-N-OG138-191 CHARLESTOWN, Mass. (May 18, 2015) USS Constitution enters Dry Dock 1 in Charlestown Navy Yard to commence a multi-year planned restoration period. This is Constitution's first time in dry dock since its 1992-1996 restoration.