Btw, as a primer for the brain dead, there actually isn’t a big difference between a building and a plane. Especially once you take measures to properly secure them, for instance, designing one exit/entrance, save for fire escapes. When an individual MUST enter at one entry point, a shooter can be easily neutralized. Honestly, it’s like some of you are trying to find reasons not to make schools safer. All due to ideology and politics. It’s completely pathetic, and frankly borderline evil. Correction, it IS evil.