It's 9:10 PM in the Chatham County Communications Center. The dispatchers stare at each other, afraid to move, afraid to breathe. One minute to go. Will tonight be the night? The clock on the wall changes. 9:11. A phone rings. The screens indicate the 9-1-1 call is coming from a blocked number. The dispatchers hope and pray it's a coincidental call for service. Perhaps a car break-in or a bar fight. With all eyes on her, one dispatcher presses a button,...