The mistakes made by FEMA during its response to Hurricane Katrina are the stuff of legend. It failed to get to the worst hit areas for days, it was unprepared for the scope of the disaster, and many of the trailers it provided for temporary housing were later found to be toxic. It is hard to identify anything it did right in New Orleans and the Gulf Coast. Local politicians were merciless in their criticisms, even to the point of—rightly—praising the job done by Walmart in getting supplies to the New Orleans area and crediting Walmart's response with preventing looting and other problems in their towns.