Petty Officer 2nd Class Jeffrey Esser, a diver with Regional Dive Locker Pacific, checks in with the dive supervisor while conducting recovery and salvage operations in Port Allen Harbor, Kauai, Dec. 3, 2015. Divers work with USCGC Walnut to maintain the 393 floating navigation aids throughout the Pacific. (U.S. Coast Guard photo by Petty officer 3rd Class Melissa E. McKenzie/Released)