1. McDonald was effectively dead within minutes of being shot in the chest, a pathologist hired by the defense said. That wound was the fatal injury, testified Dr. Shaku Teas, contradicting the conclusion of the prosecution’s pathologist that each of the 16 bullet wounds contributed to McDonald’s death. In addition, Teas said, McDonald sustained the vast majority of the wounds before he even hit the pavement -- though prosecutors have said the teen collapsed less than two seconds after Van Dyke fired the first shot. And even though McDonald had a weak pulse in the ambulance, he was “at a point of no return,” Teas said.