A St. Charles County man has been charged with firing a BB gun at his 12-day-old baby. Shawn Michael Mohan, 20, shot his infant son several times, police say, causing circular shaped bruises to the baby's face, upper left arm, hand, foot, hip and buttocks. Authorities found out about the injuries when the child went for a routine examination at his pediatrician's office, and the doctor placed a hotline call to the Division of Family Services. "He's claiming it was an accident, but we feel that the evidence points otherwise," said Lt. Craig McGuire of the St. Charles County Sheriff's...