This is all nonsense since nobody really wants to solve the problem.
9/11 required a serious solution to a real threat. We allowed Pilots to be armed and told the bad guys there might be an Air Marshall on the plane...disguised in plain clothes.
Allow teachers to voluntarily and secretly keep a gun locked up in their office. Had this been the situation at Sandy Hook, many fewer children would have died.
The Principal did all she could. How would things be different if she'd had access to a gun?
And if these 'shooters' knew they'd face resistence...would they reconsider their target?
Here's the ugly, ugly truth. Our President never lets a crisis go to waste and he'll use the blood of children to further his agenda.