them onto action and doesn't back out. social media is now filling that role. it's not so much al qaeda or the islamic state's external operations capability but rather a lone wolf type of attack, a much smaller attack that's harder to prevent and the islamic state is so good at mobilizeing people to do. >> let me put up on the screen where they have made terror related arrests in just the last couple of months. these are 18 different states. does that mean somebody was about to act or they just have an inkling on social media. >> it means they're about to act. you can espouse all sorts of horrible ideas and our first amendment protects this. these are people prepared to act on that speech or those