Biloxi, Miss. -- A former Mississippi Gulf Coast police officer is headed to prison for the death of her 3-year-old daughter, who was left in her mother's patrol car while the woman had sex with a police supervisor. CBS Biloxi, Miss. affiliate WLOX-TV reports ex-Long Beach, Miss. police officer Cassie Barker was sentenced Monday to 20 years in prison in the 2016 death of Cheyenne Hyer. The 29-year-old pregnant woman pleaded guilty last month to manslaughter in a plea bargain after being indicted on a charge of second-degree murder. Cheyenne was strapped in her car seat in the patrol car...