Canada's Prime Minister Stephen Harper and his wife, Laureen Harper, lay flowers at the National War Memorial in downtown Ottawa October 23, 2014.
Prime Minister Stephen Harper shakes hands with Sergeant-at-Arms Kevin Vickers, who shot and killed a gunman who had rampaged through the parliament building, in the House of Commons in Ottawa, Oct. 23, 2014.
Police officers search a man arrested after approaching police tape near the National War Memorial while Prime Minister Stephen Harper paid respect to Cpl. Nathan Cirillo at the memorial in Ottawa, Oct. 23, 2014.
Canada's Members of Parliament stand in the chamber of the House of Commons in Ottawa, Oct. 23, 2014.