It's 2am, you here a loud noise, someones broke in, and your daughter scream. You get up and look down at the night stand, there's a gun and a phone, which would you choose.
So you choose to use the phone, who did you call, someone with a gun, hope they get there in time.
This would be a good way to employ a whole bunch of unemployed vets, as school marshalls. This way teacher can teach.
Bob W