C.U.M.A. KNIVES are designed by Waysun Johnny Tsai. Since 2010 these knives have been collected, used and abused by tens of thousands of knife fanatics around the world.
Waysun JohnnyTsai published his first book in 2008. Since then he has become a freelance writer for over a dozen magazines (print and on-line) and has had over 200 articles published. If you are looking for a writer, Sijo is your man.
Waysun Johnny Tsai has spent nearly three decades as a contractor and security industry consultant at every level from executive protection to governmental agencies. He has been instrumental in developing and delivering school safety programs and active shooter training programs at municipal facilities across the midwest.
Defense classes are available at different levels, from private and personal self defense classes to training law enforcement agencies and large private or corporate groups.
