Two 19-year-old men were killed early Monday in a shooting in the Back of the Yards on the South Side. They were sitting in a parked vehicle in the 5000 block of South Justine Street around 12:45 a.m. when a dark-colored sedan approached and two men opened fire, the Chicago police said. The younger man, shot multiple times, was dead at the scene. The other man, shot in the back, was in critical condition at the University of Chicago Medical Center, where he was later pronounced dead, police and the Cook County medical examiner's office said.Detectives are investigating. ...read more read less