Where does a 225-year old working warship get its parts?  At the Navy forest of course, a forest owned by the U.S. Constitution-named by George Washington and built with bolts forged by Paul Revere-stays afloat and at the ready.    In 1939, with the beginning of WW II, the Navy-whose weapons and munitions at the time were housed in Deleware-was in search of a location west of the Allegheny mountains and beyond the reach of a possible waterborne enemy attack to store its ordnance.      A carrier-based bombing raid could have wiped out 100 percent of the Navy's weaponry,"  said Osmon.  After identifing southern Indiana as a "geographically safe spot" from enemy missiles, the government added another 30,000 acres to its 40,000 acres of forested hills to create NSA Crane."  The first administrative buildings on the base were dedicated in December 1941-Just a few days before the attack on Pearl Harbor.  In one corner of NSA Crane's expanse of white oak trees is the 40-acre area known as Constitution Grove.  The white oak trees are tall and slender, with branches that start high in the truck, culminating in the canopy that blocks most sunlight from reaching the ground. This part of the forest was originally selected by the Navy due to its high concentration of high-quality white oak.  And while Osmon and his crew harvest trees from across the Navy Base for use on Constitution, most of it is tagged and felled right in Constitution Grove.  Maintenance of a 225-year old, 304-foot-long wooden warship is a constant job, and in the 50-odd years that Constitution Grove, Osmon estimates that 114 white oaks have been felled for the two most recent dry-lock restorations of Old Ironsides.    In felling trees for Old Ironsides hull planks, Osmon's forestry team seeks out mature trees anywhere from 110 to 125 years old and 120 - 130 feet tall, which are then loaded on commercial trucks and taken to new England.  There, the ship's caretakers mill the enormous white oaks into hull planks that stretch up to 40 feet long, with leftover pieces repurposed for more ornamental flourishes around the ship, such as handrails and trim.           The three-masted heavy frigate, launched in 1797, was named by George Washington and built with copper bolts forged by Paul Revere.  Black sided and red bottomed, with a single, stark white running stripe, constitution protected American ships against the French in the 'undeclared quazi-war' of 1798 - 1800, and quelled pirate attacks in the Mediteranean during the first Barbary War.  The armed vessel defeated five British warships in the War of 1812, and it was in the wake of one of those battles-in which the American crew watched enemy cannonballs bounce harmlessly off Constitution's white-oak-hull-that the warship earned its famous nickname:  "OLD IRONSIDES."    Constitution fulfilled its last mission, seizing a slave ship near the Congo River, in 1853, but remains today a fully commissioned warship of the U.S. Navy and-225 years after its launching-the oldest warship still afloat anywhere on earth, moored in Boston Harbor's chilly waters. - In 1906, after decades of work as a training ship along the East Coast, the Navy made its first attempt to restore Constitution to its original War of 1812 configuration.  In order to maintain the ship's seaworthiness, a near-full restoration would need to be undertaken every ten years.    A group of civilian volunteers employs historically accurate uniforms and firearms to educate the public about what life was like for the detatchment of U.S. Marines that fought and lived aboard the vessel during the War of 1812.