Should a major riot take place in a major metro area, expect the ghetto dwellers to march into the better areas.
I want a very, very well armed and equipped force, for that possibility. If that means taking hand-me-down vehicles and other aids, it is fine.
My city is 200,000 and part of a major metro area of over 10 million. Because we are a youth "play destination," we have had several riots.
But if a Rodney King type event takes place, expect and plan for the folks with perpetual grievances, to bring them to your quiet suburb.