Acclaimed defensive tactics instructor Earl Portnoy, left, teaches broadsword techniques to D&D United Martial Arts student Kelsey Cooper. Portnoy, whose resume includes offering training to high-profile clients like the U.S. Department of Justice, helped with several workshops at the Stanley Street martial arts studio last week. The grand master from Plano, Texas, struck up a relationship with D&D sensei Bryon Davis when the Brantford instructor was inducted into the Universal Martial Arts Hall of Fame in 2008.