Security at McDonalds

I was out running errands today (okay... I was really just messing around avoiding my life) and I stopped by McDonalds to pick up some lunch for Momo and the old man.  A while ago they started having the girl who takes your order stand out by the menu so you don't have to yell into the little box.  Today they have a new addition.  They've added an armed security guard standing next to her.  I asked her if I ordered the wrong thing if he'd shoot me in the head.  She giggled and said no, but I was extra careful anyway.