With more than 50 years of martial arts training and over a decade of expert witness experience, he focuses on self-defense techniques, martial arts standards of care, excessive force analysis, and use-of-force issues involving martial arts instruction and school operations. His expertise includes karate, judo, jujitsu, Krav Maga, Kendo, Iaido, and various knife and stick fighting systems, along with workplace and personal security training. He has provided consultations, depositions, and court-approved testimony regarding self-defense techniques, black belt standards of care, martial arts instruction, and excessive force matters.

In addition to his martial arts background, he combines legal training with instructional and consulting experience involving personal protection and security-related education. He served as an Adjunct Professor of Law and previously operated his own dojo for 12 years while also organizing tournaments and representing martial arts organizations. He currently owns and operates martial arts and consulting businesses and has taught security and personal safety programs, including continuing legal education courses related to workplace and law firm security. His martial arts credentials include a 6th Degree Black Belt in Mu Duk Kwon Tang Soo Do, 5th Degree Black Belts in both Kendo and Iaido, and training in Kodokan Judo, Aiki Ju Jutsu, and additional combat and defensive systems.