One day in 1989, Ken Stewart was playing a game of paddleball at a sports facility in Nashville

when he saw something that would change his life.

He looked over at the pool and he saw a man coming out of the water with a tank on his back.

He was taking scuba diving lessons because they were in Nashville.

There wasn't really an ocean option.

And then right behind him coming out of water was an instructor, who was a black instructor,

oh man, that kind of just set the tone for me. Next to me, can I do this?

Ken was 45 at the time. He's 79 years old now. He's always been an active guy, plays all kinds of sports, but scuba diving was something

that had just never really occurred to him. After that day at the sports complex, Ken was hooked.

I mean, I thought about the level, I just went crazy. And then, one day in 2002, Ken

got a phone call. A documentary filmmaker was on the line, and she wanted to interview black divers about a particular shipwreck.

But it wasn't a shipwreck full of lost treasure.

This was a slave ship. It was a ship that crashed off the coast of Florida two centuries ago,

killing dozens of people. The ship was called the Guerrero, and for the most part, it's a piece of forgotten history.

The Guerrero is not taught in schools,

nor is it a story that's in the ether

and passed down through communities.

Most people have never even heard of it.

Ken included.

To be honest with you, I was not a history kind of buff, never.

But the story of the Guerrero struck a chord with him. Later, Ken went

sit down at his computer and write an email to some of his friends in the

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