Chief Petty Officer Michael Perrault, a diver with Regional Dive Locker Pacific, works to refloat a sunken buoy in Port Allen Harbor, Kauai, Dec. 3, 2015. Divers along with Coast Guard Cutter Walnut perform regular maintenance on and address discrepancies on the 393 floating navigation aids throughout the Pacific. (U.S. Coast Guard photo by Petty Officer 3rd Class Melissa E. McKenzie/Released)