http://www.globalsecurity.org/military/facility/new-orleans-imagery.htm

www.globalsecurity.org/military/facility/new-orleans-imagery.htm

I know it's the last thing we should be worrying about but this site has some amazing sattelite images of the Fairgrounds pre- and post-Katrina. The track is underwater and it looks like it's been devastated.

There are other images of the New Orleans area that give a sense of the scale of this disaster.