The USNS Salvor (T-ARS 52), a safeguard-class salvage ship from Military Sealift Command, serves as a support platform for Navy Mobile Diving and Salvage Unit-1 conducting underwater searches in the last known position of two Marine Corps CH-53E Super Stallion helicopters off the North Shore of Oahu, Jan. 18, 2016. The MDSU-1 are equipped with side scan sonar and a remotely operated vehicle. (U.S. Coast Guard photo by Air Station Barbers Point/Released)