From a live report by Campbell Brown on Today:

Things are beginning to start to look better in Mississippi this morning. The Mississippi National Guard, as well as Guard from Alabama and some Marine units, are beginning to clear debris and restore some order to make way for supply trucks that are lining up with essentials.

Some people report that they have had nothing but a peanut butter sandwich and maybe a bottle of water for the last three days. Shortages of drinking water are especially acute.

Local officials are apparently reluctant to release numbers of casualties because some outlying communities are still isolated by debris and have not yet been reached by the rescue and recovery teams. This is expected to change over the next couple of days.

Contrast this to New Orleans, which is under water...