I'm putting this under Legal & Political because "off topic" just didn't seem right when it is obviously THEE topic of the hour right now. But feel free to move it if I'm wrong. Now. In light of the recent shooting... my thinking is that the only way to prevent these sort of things from happening in the future... at least at schools, is to design a better school. My first thought would be to have a double locked door system like they have at jails. You enter through one door that is remote locked and opened and enter into the admin section which is behind another locked door and would allow the office staff to determine who you were and why you were there. At least if he started shooting in there, he'd only get the office staff. The more I think of it... the more I think that it might be impossible to stop someone who is completely intent on targeting the school specifically. But my suspicions are that these things happen because the target is so easy. Perhaps if there were built in counter measures, then they'd be less appealing as targets for mass shootings. What else could be built into schools to make them a less attractive mass shooting location?