Petty Officer 2nd Class Jeffrey Esser, a diver with Regional Dive Locker Pacific, inspects an oxygen tank before getting underway to salvage a sunken buoy in Port Allen Harbor, Dec. 3, 2015. The divers assisted USCGC Walnut conduct salvage and recovery operations of aids to navigation located near shoal water. (U.S. Coast Guard photo by Petty Officer 3rd Class Melissa E. McKenzie/Released)