John Mahony serves as one of Kwan Jang Nim H.C. Hwang's appointed representatives on the Board of the United States Soo Bahk Do Moo Duk Kwan Federation®. He is an internationally certified Master level practitioner and master level Instructor (Sa Bom) of the Soo Bahk Do® martial art system taught in Moo Duk Kwan® schools worldwide.