Kama Jiu-Jitsu Ambassador, Prof. Jack Taufer, will be teaching a special Jiu-Jitsu Seminar on Sunday June 9. He is currently an instructor at Kama Jiu-Jitsu in Irvine CA. training under Professor Dave Kama, he will be teaching high-level details in the Master Rickson Gracie style that some people refer to as "invisible" or "hidden"Jiu-Jitsu