I was driving OTR for Schneider National when Katrina hit. Ended up hauling a lot of paper goods to a big distribution center in Southern Mississippi. You know the trucking industry got all messed up when Katrina hit. We couldn't get out fuel cards processed, we couldn't get our billing paper work in, and half the time you couldn't even get a decent place to park a truck and get a shower or get repairs on account of how many relief convoys where rolling down there.
It really tells you a lot about how poorly prepared the US as a whole is for serious disasters. While I was driving down in Mississippi my family back in western North Carolina went three weeks without being able to get ANY gasoline because of how badly the fuel delivery infrastructure broke down when the gulf coast refineries went down.