Massiveness of the effort. and of course, the chicago pd is the big dog in this crowd because they have the thousands of cops that are going to be on the front lines and behind the scenes and coordinating all of that as a lot, but you and i were both at at the global threat summit overseas recently and we heard the threat stream you've got al-qaeda propaganda calling for lone wolves, ice is launching attacks in multiple countries. so they have their concerns, which is why they spent so much time planning. >> yeah, i think that's the thing. there are so many threats. they have to plan for everything. they have to be right to keep everyone safe. and it is quite a paul order. >> john miller. thank you so much for taking us inside of that. it was really fascinating to see what they have underway there appreciate it thank you so much for joining us tonight. >> i'm briana keeler in for erin burnett and ac30 60 starts right now tonight on 362