ST. AUGUSTINE, Fla. -- A sheriff's deputy showing a handgun to friends at his birthday party accidentally shot himself in the face, killing himself, authorities said Saturday. Matt Barnes, 26, told guests at the Friday night celebration his .45-caliber revolver was not loaded, according to the St. Johns County Sheriff's Office. He pulled the trigger around 10:30 p.m., authorities said, and was pronounced dead at the scene. Barnes, who had been a deputy for two years, was off duty at the time of the accident. The sheriff's office said alcohol was believed to have been involved. Barnes' fiancee witnessed the...