NEW : The evacuation order has been issued for Northwood , Iowa , it says . Chemical fire cleared out the entire town . `` They get off the buses , and a lot of people , especially the longtime residents , have family and friends nearby , and they come and pick them up . '' Firefighters let the blaze burn out . Several people have complained of respiratory problems .
NEW : The evacuation order has been issued for Northwood , Iowa , it says . Chemical fire cleared out the entire town . Firefighters let the blaze burn out . Several people have complained of respiratory problems .