the most immediate aid would be to stop that two block hole in the 17th street canal levy.
I remember when I was stationed with the Navy in Italy. Mt. Etna errupted and the Italian's asked our military to provide those really big MH53 Helicopters in order to drop some concrete barriers to stop the lava flow down the mountain. It worked to some extent and a few of those small villages where saved.
Maybe something like this could be done to stop the leak and plug the levy...
Just an idea...
Of course if it doesn't work I guess the first aid will be to start dropping life jackets into downtown New Orleans rather than to provide air conditioning.






