Source: Colin P. Falato, Susan M. Smith, Tyler Kress, International Journal of Emergency Management Vol. 4, No. 4, 2007
From a summary:
A recent study in the International Journal of Emergency Management suggests that the nation’s federal and state governments should help local communities prepare for a range of large-scale disasters, United Press International reports. In analyzing local and federal response efforts, University of Tennessee researchers identified 902 disaster declarations made across the last 25 years related to hurricanes, fires, windstorms, earthquakes, tornadoes and floods.