A police official said an officer and three others, including the gunman, are dead after a shooting at Mercy Hospital in Chicago. Chicago Mayor Rahm Emanuel said a doctor and a pharmaceutical assistant were the other victims. A woman who had just left the hospital describes the chaos outside in the parking lot. She heard 5 to 6 gunshots and saw a maroon Charger speed away from the scene. Jennifer Eldridge, a pharmacy tech who was inside the hospital, said she heard shooter arguing with someone and followed by gunshots.