Capt. Bill Simpson is a retired U.S. Merchant Marine Officer, commercial airplane and helicopter pilot, Master SCUBA Diver, gemologist, university instructor and specialist in long-term off-grid survival and disaster preparedness. He has appeared on National Geographic's hit TV show "Doomsday Preppers," and his first book, "The Nautical Prepper"  was the first of its kind. His work has been featured and republished via numerous magazines and websites, including his own.