Underwater Ops A Navy diver assigned to Mobile Diving Salvage Unit 1 positions for underwater cutting operations with divers from Underwater Construction Team 2 on the “Big Blue” mooring system in Apra Harbor, Guam, Dec 11, 2017. UCT-2 provides construction, inspection, maintenance, and repair of underwater and waterfront facilities in support of the Pacific Fleet. SHARE IMAGE: Download Image: Full Size (1.88 MB) Tags: Navy Photo By: Navy Petty Officer 1st Class Arthurgwain L. Marquez VIRIN: 171211-N-CW570-0067C.JPG Photo Gallery