BILOXI, MS (WLOX) - A woman working the overnight shift at a Biloxi Waffle House was shot and killed early Friday morning, and police say it was all over a cigarette. Investigators say an argument erupted when a waitress told a customer he couldn't smoke inside the restaurant. Johnny Mount, 45, refused to put out his cigarette, pulled out a handgun he had concealed under his shirt, and shot the woman once in the head. Harrison County Coroner Gary Hargrove said the 52-year-old woman was taken to Merit Health Biloxi where she later died from her injuries. Mount was arrested...