Themselves behind doors piled up with chairs. The gunman was shot and killed. Nbc news has confirmed his name, michael zehafbibeau, a common sill gear yan surname. He is believed to have have taken on muslim. It came after another muslim convert ran down two soldiers, killing one in a parking lot outside montreal. Last month an isis commander had called on followers to kill canadians, americans and other westerners, whether military or civilian. In United States, three girls in denver have tried to join isis and other cases where we see american residents are joining the other side. Were going to look at how the Security Breach on our continent is going to affect the u. S. Midterm elections coming on strong. Michele shepherd is a National Reporter for the toronto star. Pete williams is nbc justice correspondent. In the u. S. , michael weiss, editor for the interpreter and Clint Van Zandt, former fbi profiler, now with msnbc. We gil begin with michelle shepherd up in ottawa. Give us a c