Here's something that may be of no importance to most but of great importance to the few who later visit the areas. A few months after Hurricane Hugo, the darnedest minor news item came up. It seems that the highway department replaced most all of the road signs they were going to. Small neighborhoods and places in the "middle of nowhere" would never get signs again. Route markers, speed limit signs, directional signs, etc that were there before the storm were never coming back. Interstates and major arteries got most of them back, but many back roads were left unmarked for good.
They took up a collection to buy street signs for our neighborhood, 16 years later. We didn't need them for a while, as we knew where we lived.
The important thing is that if you plan on visiting the Katrina area later, you'd better know exactly where you're going as there may not be road signs to help, and it may not be a temporary condition.
Not only are the road signes gone, buy also the landmarks. Fortunately, the relief staging areas are easily located.