A Florida police officer has been fired after accidentally shooting to death a retired Twin Cities woman during a role-playing exercise last summer, reports the Star Tribune. Lee Coel faces felony manslaughter charges in the death of 73-year-old Mary Knowlton, and Punta Gorda Police Chief Tom Lewis is charged with culpable negligence, a misdemeanor. Officer Coel’s attorney says his client was unaware there was live ammunition in the gun while he was “bad guy” in a “shoot/don’t shoot” simulation in which Knowlton played the role of a police officer.