All forty floors of the First National Bank Tower in downtown Omaha were evacuated this morning during a disaster drill.  

Officials say it was a joint effort with the fire department and emergency management officials.  

The nearly 2-thousand employees were sent to Pioneer Courage park at 15th and Capitol before returning to work.  Omaha Police say there was one medical call for an employee that was evacuating but no one was injured and no one had to be taken to the hospital.