Bridges are now closed down between Ottawa and Gatineau.  No traffic is being allowed to cross between the provinces.  The Canadian Forces Base in Ottawa, just south of the Rideau Centre, is in lockdown.  All Canadian Forces bases across the entire country are closed to the public.  Some officers are now making their back to the Chateau Laurier from the Rideau Centre.  A large police perimeter is surrounding at least three blocks in the area of Parliament Hill.