Martin Roy Hill is the author of the military mystery thriller, "The Killing Depths," the award-winning short story collection, "DUTY: Suspense and Mystery Stories from the Cold War and Beyond," and the mystery thriller, "Empty Places." Martin spent more than 20 years as a staff reporter and editor for newspapers and magazines, before becoming a military analyst specializing in battlefield medical operations for the Navy. His freelance credits include Reader's Digest, LIFE, Newsweek, Omni, American History, Coast Guard Magazine, Retired Officer Magazine, the Los Angeles Times Sunday Opinion Se...