John Chatterton’s current day job is hosting the History Channel series Deep Sea Detectives, with his dive partner Richie Kohler. Prior to that, he spent more that twenty years working as a commercial diver. His passion has been diving the world’s deep shipwrecks like Lucitania, Brittannic, and Andrea Doria. The discovery and subsequent identification of the German submarine U-869, off the coast of New Jersey, has been the subject of several television documentaries, and now a new book by Robert Kurson, Shadow Divers. Kirk Wolfinger has been producing and directing documentaries for 24 years. He has over 80 hours of nationally broadcast programs specializing in action- adventure, military and historical subjects. He has worked with every major broadcasting outlet in the US and Europe. Among his awards are two national Emmy’s and the prestigious George F. Peabody award. In addition to Deep Sea Detectives, he has worked with the US Navy, Bob Ballard and several other undersea explorers producing numerous hours of deep sea specific programming.