"On the night of November 8, 2007, two teams of armed men attacked the Pelindaba nuclear facility in South Africa, where hundreds of kilograms of weapons-grade highly enriched uranium (HEU) were stored. One of the teams opened fire on the site security forces, who reportedly fled. The other team of four armed men went through a 10,000-volt security fence, disabled the intrusion detectors so that no alarms sounded—possibly using insider knowledge of the security system—broke into the emergency control center, and shot a worker there in the chest after a brief struggle. The worker at the emergency control center raised an alarm for the first time. These intruders spent forty-five minutes inside the secured perimeter without ever being engaged by site security forces...."