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Don A. DeWitt resides in Cortland, Ohio. He served four years in the U.S. Marine Corps (1984?1988), obtaining the rank of corporal; served fourteen years in fire and EMS, obtaining the rank of lieutenant; and served eighteen years in law enforcement, retiring as a deputy sheriff.

He holds the rank of second degree black belt (Nidan) in traditional Shotokan karate-do, including one year studying the Chinese martial art Tai-Chi Chuan, Push Hands, for a combined total of nineteen years experience in the martial arts. In a 1983 tournament he took second place sparring (Kumite). From 1994 to 2002 he was a member of the Zen-Do Kai Martial Arts Association International; and then in 2002 he became a member with the Japan Karate Federation Rengo-Kai, under Shihan Fumio Demura.