The U.S. Navy radar picket destroyer USS Frank Knox (DDR-742) aground on Pratas Reef, South China Sea, with several ships attempting to pull her off. She went aground on 18 July 1965. This view was probably taken at about the time she was finally refloated on 24 August 1965. Ships pulling are (from left to right): USS Grapple (ARS-7), USS Conserver (ARS-39), USS Sioux (ATF-75), USS Greenlet (ASR-10) and USS Cocopa (ATF-101).