metropolitan police several people were injured and stabbed. want to bring in my panel of experts, some very well-versed people when it comes to these type of incidents. your reaction when you see the types of -- the law enforcement reaction there and what the police are saying. >> they're very concerned, treating i want as a terrorist attack. they haven't confirmed that, but we saw that video play out. police shooting somebody who is on the ground. why would police shoot somebody who is on the ground, perhaps after their weapon has been taken away? that's not something that would normally happen. there must have been something that really concerned them about what he had. could it have been something like a suicide vest or a fake suicide vest. we saw on that bridge, on that area, 2017, the month of june, a group of three individuals,