Charles Ryan served in the United States Air Force, as a senior section airman and munitions system specialist in the armament of the 199th Fighter Squadron based at Hickman AFB, Honolulu. He attended the Universities of Hawaii and Washington, and has worked at numerous occupations, including judo instructor, commercial pilot, and salvage diver. He's written for newspapers and magazines in Honolulu and San Francisco as well as being the author of ten novels. Ryan currently lives in northern California. "A true master of adventure." - Clive Cussler