>> that's the most remarkable thing of what happened, the fbi rarely announces a lot. >> right. >> they did that purposefully. the reason why is because there are so many people who are what i would say flirting with isis. they're online, figuring out what's going on. they're sort of intrigued by isis. what the fbi did was essentially said, this is no joke. we are serious. we are -- all of you who think you might be interested, we are going to be watching. the fbi can focus their resources on the people that we're really worried about that are becoming radicalized online or leaving the country and getting trained. this was a statement to the world, more than just we're going to increase this investigation. them doing it publicly is fight uniq unique. >> it certainly is. we know, we are learning information moment by moment. we know one of the terrorists arrived in europe october 3rd amongst the refugees.