they have the situation particularly in the local area contained. it was concern of multiple assailants. with regards to the blue light join up, and that's obviously between the police, the fire brigade, and obviously the ambulance service. they will be very, very cautious certainly in their tactics and drills as to who they introduce into the corridor or into the instant area until they can predict them adequately. there appear to be a number of levels to this type of attack. however, around the palace of westminster, the security and the police are incredibly well rehearsed and well practiced in anticipating this kind of threat and a number of different types of scaled attacks. i'm actually very pleased to a certain extent with the information coming through so far that the response and reaction was incredibly quick. >> fortunately, while police in london, most parts of london, walk around unarmed at the parliament, they are armed and