Bill McGrath trained in the Filipino martial arts under Grand Master Leo Gaje. He eventually rose in rank to Tuhon Guro in the Pekiti-Tirsia system. Bill went on to found Pekiti-Tirsia International an organization that is dedicated to preserving and promoting the system. New York Self Defense Club hosted a seminar with Tuhon McGrath where he instructed students in knife defense techniques. For more information visit: www.pekiti.com