How St. Louis prepared for major disasters this week with drills in streets, skies and waterways

This week, more than 500 federal and local first responders converged in the St. Louis region to practice for an 8.4 magnitude earthquake. The drill accounted for collapsed bridges, crumbling buildings and more than 40,000 people trapped in Busch Stadium. First responders also dropped portable roads from helicopters near the Grafton ferry dock for a river crossing. Joining the discussion was Maj. Kelly Hudson, project officer for Michigan-based National Guard Task Force 46, and Samantha Lewis, executive director of the St. Louis Area Regional Response System.