On September 1, 1985, the wreckage of the "Titanic", which had been dormant for more than half a century, was discovered at the bottom of the Atlantic Ocean, and this news immediately stunned the world. Twenty-three years have passed, and Dr. Robert Ballard, the head of the US-French joint expedition team at that time, has revealed another astonishing secret - in fact, the real goal of the search operation back then was two sunken US Navy nuclear submarines, and the search for the most famous sunken ship in history was just a cover to confuse the public.