Knife Defense Bojuka Combat Tactics Posted on September 16, 2017 by enginejuan 16 Sep Sifu James demonstrates Bojuka Fighting tactics. Bojuka Blocking Videos are available to be ordered and shipped. Order here Now! SAMI Combat Systems – daily training idea – Exercise 56 – Checking Hand Knife Fighting 2017 Tantojustu (短刀術) Keiko / Knife Fighting Workshop