Chris Hosey, director of the Georgia Bureau of Investigation (GBI), said almost 500 shell casings were recovered. Of those rounds, about 200 struck facilities on the CDC campus. --- Subscribe to ABC News on YouTube: https://abcnews.visitlink.me/59aJ1G ABC News is your daily source of breaking national and world news, exclusive interviews and 24/7 live streaming coverage. Download the ABC News app for the latest headlines and alerts: https://abcnews.go.com/devices Watch 24/7 coverage of breaking