Has anyone heard of either of these organizations by these exact names? -Korea Haedong Kumdo Association -World Kumdo Federation A master here in southern california had been promoting Kumdo as the USA President of the Korea Haedong Kumdo Association but now says he is affiliated with the World Kumdo Federation under President Jung Kim. This masters name is Byung Chul Chang. Has anyone heard these organizations or masters? If so, what can you tell me about them?