U.S. Navy Builder 2nd Class Kyle Foresman, a Seabee assigned to Underwater Construction Team 2, Construction Diving Detachment Alfa (CDDA), enters the waters of Apra Harbor, Guam on November 17, 2017. CDDA is conducting the systematic removal of 10,000 feet of mooring chain left behind by the former dry dock Ex-Machinist, known locally as “Big Blue”, utilizing various underwater construction techniques. CDDA is on the 4th stop of their six-month deployment, where they are conducting inspection, maintenance, and repair of various underwater and waterfront facilities in support of the Pacific Fleet. (U.S. Navy photo by Construction Mechanic 2nd Class Ben McCallum)