As a professional boxing and mixed martial arts official, I have studied various styles of martial arts and combat sports for more than two decades. Meeting Jeff Fiedler and studying with him over the past 11 years has been truly transformative. The opportunity to train with Jeff involved an amazing integration of scientific principles, practical techniques, and meditative balance. In particular, the courses, practices, and seminars he led involving real-world scenarios were superb. His ability to teach students of diverse skill- and fitness-levels created a positive learning environment for all. I have been especially impressed with his capacity to customize classes and approaches for beginners, advanced professionals, law enforcement agencies, and military personnel among others. He is compassionate, humble, and results-drivenan authentic leader and innovator.