I’m more worried about security guards getting shot than them shooting ngl

You just said it yourself, “most”

Idk, looking in from the outside adding a security guard usually ends up with someone dying in the US. Either the security guard tries to be John wick but ends up being a Paul blart or the security guard is a waste of salary as they go “why would I risk my life, fuck that.”.

At best it would be a deterrent to young kids who get cocky.