why did this driver ram into a police cruiser? was this a deranged individual? was this something more planned out? those are still outstanding questions, but manu raju very importantly reporting from inside the capitol and where we saw people and members of congress and aides walking back and forth going about their day and they have not been put in a shelter in place warning and remember what happened in the british parliament when there was the vehicle attack on the westminster bridge they were in lockdown for members of parliament and that is not happening here and art roderick, if you're with us here someone tried to run over capitol hill police officers in a vehicle. obviously, there is so much concern rid now over that type of incident and vehicles being used as weapons. how hard is it to protect against that? >> it's very difficult especially if the individual is willing to die for whatever cause they're fighting for. in this particular case we don't know the motivation yet. was this just a simple, you