Rand Cardwell has studied numerous disciplines for over 20 years and is an expert on the application of traditional Chinese medicine to the martial arts. He is a veteran of the U.S. Marine Corps and a certified instructor of Isshin-ryu Karate, Ryuku Kempo and Torite-Jutsu. Patrick McCarthy is a 9th Dan and recognized as one of the foremost authorities on the civil fighting traditions of Okinawa. His translation of The Bubishi is considered the definitive version.