One was the blocks of apparent housing and small businesses that were burned. One of the consequences of an earthquake is fires that can spread quickly through residential areas. The key factor being the lack of water pressure to fight the fires and perhaps the number of fires that were started by the earthquake.
I recall here locally that firefighters were surprised and alarmed about the immediate actions planned by the water district to shut down the water system so it could be inspected. They, of course, were counting on "the white stuff to put on the red stuff." It seems simple, but having those types of conversations before a disaster can be very helpful. Make sure you get your teams and cross-sector folks together to have simplistic "what if" discussions on what their immediate plans are in responding to a disaster.