On the airlines.
We aren't hearing much about skyjackings these days. We aren't hearing about mass murders in the skies. No, we aren't hearing about shootings of any kind up there in the skies.
The difference with the no-gun zones in the skies, is that they not only make it the rule, they make it so it is pretty close to impossible to get a gun on board.
And, if it is working in the skies, maybe we should consider bringing it to the ground, to our schools. It would be a dire thing, of course, to have metal detectors at all school entrances. And, it would only push the criminals to find other places to shoot up. We could eventually need to have metal detectors all over.
Maybe it has come to that.
At any rate, at least consider the schools. Whether we can make all places safer, at least consider making the schools closer to being safer havens. That is where the bulk of mass murders are occurring, so defend them.