The American aircraft carrier Yorktown (CV-5, as distinguished from CV-10, which is now a museum ship) fought the Japanese at Coral Sea and Midway. It was in the latter engagement that she sank to the Pacific Ocean floor 18,000 feet below. Its location was discovered only in 1998.The National Oceanic and Atmosphere Administration (NOAA) recently conducted dives to its hangar deck and took photos of parts of the ship not seen since 1942. The finds include a well-preserved mural and Dauntless dive bombers....