I'm not trying to blame anyone. With all of the incidents going on at schools now a days, I'd expect security to be a little more responsive than this. Even if its before actual school hours (happened around 7AM. Assuming class starts around 8AM for non zero period students) I'm legitimately concerned about the situation. As the article stated, he went to a few different classrooms to stab the students/guard. I just don't understand how nobody was alerted sooner and allowed this to go on in multiple rooms for 30 minutes before being subdued. I'm sure more details will come out in the coming hours/days and might explain some of this. Glad one student was alert enough to pull the fire alarm and try to give the students a warning. Freaks me out thinking something like this could happen in the future with my kids in school.