A 25-year-old man has been charged with murder after police say he stabbed a woman to death on an Atlanta commuter train in an apparently random attack. John Elijah Matthews was arrested around noon on Saturday, moments after he stepped off the Metropolitan Atlanta Rapid Transit Authority train at the Oakland City Station, said MARTA Police Chief Scott Kreher. First responders tried to resuscitate Margaret Swan, 66, but she died at the scene, he said. Matthews waived a bond hearing set for