what was the planning behind all of this? because they're going to be looking for clues that could potentially lead them to other situations. chris, alisyn? >> barbara, stay with us on this let us know what you hear as it's going forward. nobody gets information sooner than you. as you said the forensics, the bullet pattern on the windshield is a very tight pattern. usually suggests some level of training or really close proximity. let's get somebody who understands what's happening in frons specificallyfrance specifically. that is peter bynard cnn's political commentator, contributing editor to "atlanta media" and works for "haaretz." in france you have an exploding population of islam, which is fine. but within it there are extremist elements specifically in and around north paris, which is where this is going on right now what do we need to understand about the threat