OTTAWA, ON - OCTOBER 24:  A woman sits in silence while paying her respects to Cpl. Nathan Cirillo of the Canadian Army Reserves, who was killed two days ago while standing guard in front of the National War Memorial by a lone gunman, on October 24, 2014 in Ottawa, Ontario, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead.  (Photo by Andrew Burton/Getty Images)