A nightmare scenario unfolded at Greenbriar mall. Thankfully it's only a full-scale exercise with real First Responders and volunteers acting out the scenes for Operation Vista Forge ATL. Atlanta Fulton County Emergency Management stage reaction to a radiological attack. The mission: decontaminate anyone exposed to radiation alive or dead. The contingency plan extends beyond human patients. The response could apply to numerous scenarios. District 6 Commissioner Khadijah Abdul-Rahman surveyed the site.