The problem with all of this, is that the Taxes on the guns will not pay for these guards. The safety is not for the ones in favor of guns, as quite frankly, gun owners, or informed gun owners are not the ones that fear the guns.
I pay a lot of tax for cigarrettes and gasoline and my taxes go to the local schools. I don't have any kids, so why should my taxes go to that end? I plan on not having kids. See my point? I am all for safety and the well being of others, but I have seen many "trained" armed guards and police who just don't have the right culture in them to operate guns safely. It is definitely a cultural thing.
In a world full of bad asses, it is not another bad ass that acts stupid, it's the fool that does so.