A man was shot and killed after walking out of a fast food restaurant late Sunday in the Greater Grand Crossing neighborhood on the South Side. When the 25-year-old man walked out of Southtown Sub, 112 E. 71st St., around 11:35 p.m., he spotted a gunman standing nearby, according to police and the C ook County medical examiner's office. He then heard gunshots and realized the assailant had shot him in the chest and ankle, police said.He tried to flee but collapsed and was taken to the University of Chicago Medical Center where he died, police said. Area 1 detectives were investigating. ...read more read less