>> i have been standing guard at west florrisant. there is a calmer scene now than an hour ago but it's police vehicles are coming down right now. we have seen two emergency vehicles now and now i've seen about eight. i'm looking towards chris' position. tear gas, i can feel in my nose. people are running with their shirt over their face. the police have gas masks on and are in a defensive position. >> when you are seeing emergency vehicles, is that police cruisers or tactical vehicles or ambulances? >> tactical vehicles. they are not ambulances or fire. they are tactical vehicles and the drivers have helmets and shields. the police have shields and batons, face masks and gas masks are on. >> erin is it clear to you from your position, is it clear to you what they want protesters to do and can protesters do what police are directing them to do? >> almost every protester has cleared out. i cannot explain the difference between 8:00 p.m. local time and i'm feeling the tear gas now, rachel. it stings. but i can tell you that protesters