Guns have no moral agency.
Predators hurt and kill people. Often they use a gun.
Good guys protect people. Often they use a gun.
When a predator kills with a gun he is rightly called a monster.
When a good guy with a gun fails to protect people he is rightly called a coward.
The very nature of the way we discuss an atrocity like the Parkland school shooting conveys our understanding that it’s bad guys and good guys who are responsible for what they do and not the instrumentality they use in their conduct.
So arguing that the response to the deadly success of the shooter and the failure of the deputy sheriff is to reduce the number of good guys and their instrumentality choices does not logically follow from the accepted premise.
And neither does the failure of state agencies locally and federally to exercise the power they currently possess make the case for expanding their power at the expense of our rights.
No amount of emergency planning or algorithmic modeling or government power can replace the variety of human judgment calls that will be thrust upon a free people.
The question then isn’t what’s in my holster, it’s what’s in my head and my heart?