To e ship yuk:
All that I can say regarding the police work was that it was a very rough time in Korea at that time, when He was involved with that. I know that there were "gangsters" who would cause trouble and the people in the place where my GrandMaster lived would call on him and others to dispell them, make them go away, beat them up, or whatever. He said that there was a lot of trouble.
I cannot say that he was from Seoul though. I do know that he was born in a very small town, very small. He said that that place was so small that there was a joke about how you could miss it travelling through it.
And, yes, we did not ask too many questions or talk very much, but rather were told to get back to practicing the techniques. "Go practice", He would say.