Sa Bom Nim Frak Tsai and Sa Bom Nim Jared Rosenthall redefine hangtime in their 2011 demonstration at the U.S. Soo Bahk Do Moo Duk Kwan Federation 2011 National Festival.
Moo Duk Kwan martial art school model class instruction of Soo Bahk Do martial art system performed by Technical Advisory Committee Member Jeff Griggs Sa Bom Nim 2011
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