@cbsmornings: A retired Air Force colonel who went to Afghanistan in 2012 would high-five Afghan children who played near his base every day. One day, that colonel heard an explosion and later learned that one of those children, an 8-year-old girl had been killed by a suicide bomber detonating his device. @Imtiaz Tyab, who is currently in Kabul, recalls covering that story when he was in Afghanistan.