CDC security guards stopped White from driving into the campus on Friday before he parked near a pharmacy across the street and opened fire from a sidewalk. The bullets pierced “blast-resistant” windows across the campus, pinning employees down during the barrage.

Law enforcement officers collected more than 500 shell casings and five firearms from the scene of Friday's shooting that killed DeKalb County police officer David Rose near the CDC's Clifton Road headquarters and Emory University.