U.S. Coast Guard Petty Officer 1st Class Forrest Parker, a diver assigned to Coast Guard Regional Dive Locker Pacific in Honolulu, Hawaii, swims to the surface during a buoy chain assembly replacement offshore Port Allen, Hawaii, Dec. 9, 2025. Coast Guard divers maintain proficiency in surface-supplied systems, SCUBA, and full-face mask diving, depending on mission requirements. (U.S. Coast Guard photo by Petty Officer 2nd Class Tyler Robertson)