Hurricane Katrina communication failures

http://www.washingtonpost.com/wp-dyn/content/article/2005/12/09/AR2005120902... During Katrina, virtually every system failed: Internet communications, radio transmissions, cell phones, even backup gear such as satellite phones handed out by federal relief workers after the storm. Even when the equipment worked, officials from different agencies and jurisdictions could not talk with one another. Their radios were simply not compatible.