To fund his search for the legendary Titanic, Bob Ballard asked the US Navy for money. They said no ... unless you help us out by looking for two lost submarines.

And that's exactly what he did, finding debris from the USS Scorpion and USS Thresher, two subs that sunk with all hands during the 1960s. He discovered that contrary to the Navy's fears, there was minimal environmental damage from radiation from the two ship's reactors. He also determined that the Scorpion was sunk by one of its own torpedos and not Soviet activity as suggested.

Then, using the same techniques he perfected finding the subs, he was able to locate the Titanic.

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