Read my succinct & analytical response in post #35.
Apparently you didn't follow Katrina as closely as you thought you did. He was on the phone to Blanko 2 days before the hurricane hit, pleading with her to evacuate the people from NO. He then had a document made up for her to sign that gave him the power to call up the NG. She said she had to think about it for 24 hours...well, 24 hours later and NO was in the middle of a hurricane.