A member of the Nebraska National Guard's Chemical, Biological, Nuclear, Radiological and High Yield Explosive Enhanced Response Force Package evacuate a role player in the role of a casualty from a simulated train derailment and explosion during the Vigilant Guard Iowa training exercise in Des Moines, Iowa, Thursday, June 18. Vigilant Guard provides a realistic training environment where National Guard units work with local civilian first responders in responding to disaster scenarios.