Chesterfield Mall was the scene of a multi-agency mass casualty drill on Sunday night. According to the Monarch Fire Protection District, the drill focused on decision-making, coordination and integration with other organizations during an active shooter scenario. The drill included two active shooters who randomly shot at citizens throughout Chesterfield Mall. One of the shooters detonated a backpack IEP after he was shot by police. The second shooter heard an explosion and took hostages. “The St. Louis area disaster preparedness capabilities have not been stressed to this level of realism since 1998 (during a previous mass casualty exercise). The ‘best practices’ learned from the increased terrorism activity over the last decade has changed the way we think and react toward the terrible acts against the innocent.” Said Monarch Deputy Chief Nick Harper. More