People do keep it on hand where I live (in the South) as a sort of quickie self-defense thing. It gives you time to run away, at least, and if you’re armed, it may give you time to get out the weapon.
I’ve never heard of it being used in an attack before, but maybe it has been and the press doesn’t report it. If so, LE need to start training their people. Although looking at how fast the TSA people responded, I’m wondering if maybe they already have.
JPSO Lt. Heather Sylve shot the perp.
The one who shot him was a female Jefferson Parish
Sherrif’s deputy not a TSA agent
The TSA agents did nothing but cry and get hacked