attack just by the common person seeing something that's out of line and then alerting law enforcement. >> let's talk about some of the obvious things here, chris. what today is, the holiday and all that and why would he choose the location he did? halloween tonight, other attacks have been on hards like christmas in berlin, bas still day in france. any significance there? >> yeah, think so. can't get insideis head, but we know isis has been calling these attacks since 2014 in the publication they have online. al-qaeda has been calling for these attacks. new york is the iconic city. this is real close, of course, to the world trade center monument. so there can be a lot of simpblism here. >> what's the message beside -- i guess it's the obvious message