systems. when you rise to the level where you've been expelled you've done a lot of bad things in today's school system. you have accumulate quite a record to get yourself expelled from school. and in the school system there needs to it be assessment pros stes and someone has to decide and follow up on whether that person presents a danger. and i think it's fair game at that point to then start checking social media, you've been expelled, you've threatened people, everybody talks about the ammunition and he shouldn't have been -- he was banned from coming on campus with a backpack. well that wasn't enough. i'm not armchair quarterbacking, i'm just suggesting there needs to be a well defined threat pros stes, perhaps restraining order in a case like this, and then arrest on-site. >> juliet, i have to say, yet with all these warning signs, police visiting his house, tip to the fbi, firing a weapon in his backyard inside of his neighbors we saw in that video there, he was able to go into a