When she first went to sea in April of 1961, the US nuclear submarine Thresher was the most advanced submarine at sea, built specifically to hunt and kill Soviet submarines. In The Death of the USS Thresher, renowned naval and intelligence consultant Norman Polmar recounts the dramatic circumstances surrounding her implosion, which killed all 129 men onboard in history's first loss of a nuclear submarine.
Despite incredible political, military, and intelligence risks, and after six years of secret preparations, the CIA attempted to salvage the sunken Soviet ballistic missile submarine K-129 from the depths of the North Pacific Ocean in early August 1974. This audacious effort was carried out under the cover of an undersea mining operation sponsored by eccentric billionaire Howard Hughes.
"How did the Russians not know at the time?"