Firing Blank News Today

This >> reporter: joshua morton is a former navy s.e.a.l., a canine handler with five tours overseas. at home in iowa, hes now training dogunmen and take >> i did not expect seeing what im seeing overseas, to see it in schools and to see it here but un happening. >> reporter: he demonstrated the dogs wrc, our nbc station in washington mortons friend acts as the gunman, firing blank rounds other friends posed as students running away from the gunfire the muzzled dog ignores the distraction and us...