American. it is not illegal. if somebody is radicalized it is not necessarily possible to lock them up for that. it's free speech. in this case he is saying strange things, perhaps you could have gotten him on an interstate threat with the youtube post. he won't go to prison for a long time for that. what recourse for people who do know the threat is, not a whole lot other than try to secure schools better. that will be casualty mitigation, not elimination. that's not enough. >> jon: a lot of questions still to be answered. julie. >> still ahead much more on the tragic florida high school shoo...