Retired submarine officer, deep-sea and saturation diver, scientist, author, and lifelong adventurer. Spent 22 months underwater, a year in the equatorial Pacific, three years in the Arctic ice pack, and a year at the Geographic South Pole. Degrees in Marine Physics and Meteorology, and a doctorate for developing a system to protect SCUBA divers in contaminated water. A prolific author of non-fiction, Cold War thrillers, and hard science fiction. Lives in Centennial, Colorado, with the girl of his dreams and her two cats.