Shooter before he enters the school, that is the best way to prevent the shooting. that door never should have been propped open. if they are not followed, expect more of this to happen. >> congresswoman, you are right. we could have all the protocols in the world, but if you don't follow protocol, bad things cant happen. it was a mistake that the teacher propped the door open, even with the door shut, it does not automatically lock. unless there's a physical action , there are not automatic locks on the doors to keep kids safe. >> absolutely. best practices. we can look at what those are. the...