Interesting and informative. I was surprised at the assertion that martial law had never been imposed in a US disaster. What about the 1906 San Francisco earthquake? The mayor of San Francisco requested military assistance from the Presidio and the soldiers were give "shoot to kill" orders in order to deal with looters. If that isn't martial law, it is close enough for government work.

That is just an academic quibble. The piece is a very useful bit of work.