Mark Jordan began training under George Kirby in 1987. Now a sixth-degree black belt in budoshin jujitsu, Jordan serves on the board of directors of the Budoshin Ju-Jujitsu Dojo Inc. and is vice president of the American Ju-Jitsu Association. In this exclusive video, Jordan shows you how to use the simple but effective "stomp" technique to counter an attack from behind.