High Quality Content by WIKIPEDIA articles! USS Acadia (AD-42) was a Yellowstone-class destroyer tender in the service of the United States Navy, named after Acadia National Park. She was inactive and in reserve after her 1994 decomissioning at Naval Inactive Ship Maintenance Facility (NISMF), Pearl Harbor, Hawaii under Maintenance Category B, until sunk off Guam during a live fire training exercise Valiant Shield on September 20, 2010.