Riding in the passenger seat of Deputy Sarah Brown’s police car, I listened as she referenced the movie “Forrest Gump.” “Traffic stops are like a box of chocolates,” she said. “You never know what you’re going to get.” After spending five hours with Brown during her 12-hour shift April 30, this reporter would contend that beyond the unexpected, the box is also bottomless. If it weren’t for me slowing her down to explain how the equipment works a…