160920-N-SF508-137 KEY WEST, Fla. (Sept. 20, 2016) — Navy Diver 3rd Class Alex Brown, assigned to Mobile Diving and Salvage Unit (MDSU) 2, Company 2-3, enters the water during a diving evolution in Key West, Fla. The evolution is part of Company 2-3’s two-week final certification exercise. MDSU 2, the only east coast mobile diving and salvage unit, is headquartered at Joint Expeditionary Base Little Creek-Fort Story. (U.S. Navy photo by Mass Communication Specialist 2nd Class Charles Oki/Released)