U.S. Navy Construction Electrician 2nd Class Philip Wall, assigned to Underwater Construction Team (UCT) 2, prepares for surface supplied diving operations on “Big Blue” mooring system in Apra Harbor, Guam, Nov 21, 2017. UCT 2 provides construction, inspection, maintenance, and repair of underwater and waterfront facilities in support of the Pacific Fleet. (U.S. Navy photo by Mass Communication Specialist 1st Class Arthurgwain L. Marquez)