The Trieste II Deep Sea Vehicle I (DSV-1), the U.S. Navy's most advanced deep sea submersible at the time, surfaced about 350 miles north of the Hawaiian Islands in the pre-dawn hours of 26 April 1972 after having salvaged a mysterious item from 16,400 feet below the Pacific Ocean. Publicly known as a nondescript "data package" from the Scripps Institute of Oceanography, the object was actually part of a film capsule from the first HEXAGON mission. This release of NRO material includes 45 documents found in our archives. This release coincides with one from the CIA. Their documents can be found at [CIA LINK: http://www.foia.cia.gov/hexagon-capsule.asp. The Trieste II (DSV-1) is on permanent display at the U.S. Naval Undersea Museum.
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