vehicles still surrounding the perimeter of timberview high school. this is a massive high school in arlington, texas. class rooms on lockdown. offices on lockdown. no one being allowed to enter or leave the school. our local nbc dallas fort worth affiliate, kxas reporting multiple people have been shot. i want to bring in jim kavanaugh, a retired atf special agent in charge, former hostage negotiator for the atf. he s also an msnbc terrorism analyst. and jim, here we go again. having a conversation that we ve had far too many times. another school shooting at a high school in the united states of america. let s start with this tweet that just put out. the methodical search of the high school. what does that look like, jim? what are they doing? do they go classroom to classroom to make sure the shooter is not in there holding
jim kavanaugh is still with me. jim, and again, i assume that you can see the images here of the fire trucks and emergency vehicles that are outside this massive high school in arlington, texas. but it sounds like they re starting the reunification process. if they re doing that, presumably the shooter has been identified or is that a stretch? the building being cleared means the shooter is in custody, dead, or isn t in the building. they would reunite the students with the children even if they were evacuated behind the shooter. in other words, if they could isolate him in an area, evacuate everybody behind and reunite the parents. we still don t have the answers. if the witnesses we heard heard on nbc dallas, if that information holds true, and as you said, it is not verified.