Byron Mantack Author
Byron Mantack, 9th degree Black Belt in the Okinawan Shorin-Ryu Karate, and 7th degree in Kenpo Karate, is chief instructor at the Martial Arts Academy in Chula Vista, CA.
Byron Mantack, 9th degree Black Belt in the Okinawan Shorin-Ryu Karate, and 7th degree in Kenpo Karate, is chief instructor at the Martial Arts Academy in Chula Vista, CA.
