U.S. Navy Construction Mechanic 2nd Class Tristan de Delva, a Seabee with Construction Diving Detachment Alfa (CDDA), Underwater Construction Team 2, completes a three-hour dive on July 12, 2017 in Truman Bay adjacent to Commander Fleet Activities Yokosuka. CDDA is assessing the Harbor Master Pier in order to develop a comprehensive repair plan that will extend the facility’s service life providing critical berthing space for U.S. 7th Fleet assets. CDDA is on the first stop of their six-month deployment, where they are conducting inspections, maintenance, and repairs of various underwater and waterfront facilities in support of the U.S. Pacific Fleet. (U.S. Navy photo by Construction Mechanic 2nd Class Ben A. McCallum)

Photo by: Petty Officer 2nd Class Ben McCa |  VIRIN: 170720-N-ZY182-4449.jpg