CNN The Situation Room August 20, 2013
the situation room. we begin with some terrifying moments at a charter school just outside of atlanta where at least one gunshot was reported fired today. children could be seen leaving the building and being guided to the corner of a field as this happened. there are no reports of injuries and one person is in custody. cnn's david mattingly is in decat decatur, georgia, joining us with the latest. what can you tell us? >> we just heard from the police chief of dekalb county, georgia. there was a single gunman described at 19 years old. he gained entry through the locked doors of the...