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We have had several in my work state.....fortunately (for them and me) I haven't seen any.
Nearby....and everyone that knows me wonders why I carry all the time.
http://www.fox32chicago.com/news/crime/209628617-story
A couple have been sited about an hour away from me. I doubt anyone would be dumb enough to do anything like that in my city, though. Too many religious/superstitious people with concealed carry licenses.
Thankfully none in my local but I have the same mindset with conceal carrying in this case just as I do about my house having the doors locked: My doors are not locked for my protection they are locked for yours.