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Fire at will:

Thursday’s incident comes in the wake of a surge in robberies at Newnan-area Waffle Houses. A restaurant on Highway 154 at Interstate 85 was robbed twice in one month this fall.Waffle House is a gun-free zone at all 1,800 of its restaurants across the country.

Source: Waitress sacked for shot over robbers – The Newnan Times-Herald

(BTW, warning shots are almost never a good idea.)