Families trying to comfort one another in a community that lost so many innocent lives. A fuller picture of what happened in the gunman's rampage is emerging. Investigators trying to understand why he targeted such young school children. The story of two brave brothers and how they escaped to safety. The beloved principal, her tweets and the hero teachers. Hillary Clinton recovering after she fainted; will postpone Libya testimony. A community struggling with shock and grief still finds strength and a glimmer of hope. Dr. Richard Besser offers advice on how to explain news, images of shooting to kids. Dan Harris discusses the day's violent events with those who lived through it.