TINIAN, Commonwealth of the Northern Mariana Islands (Sept. 30, 2020) Builder 2nd Class John Williams, assigned to Underwater Construction Team (UCT) 2 Construction Dive Detachment Alfa, records ultra-sonic thickness measurements from steel sheet pile during SCUBA operations within the Tinian Harbor. UCT 2 is conducting inspections as part of a maritime infrastructure assessment of the harbor and surrounding waterfront facilities in Tinian, Commonwealth of the Northern Mariana Islands during their 20-2 Indo-Pacific deployment. UCT 2 provides a capability for construction, inspection, repair, and maintenance of ocean facilities in support of Navy and Marine Corps operations. (U.S. Navy photo by Mass Communication Specialist 2nd Class Cole C. Pielop)