I think stuff like this will really ramp up once everyone has food and water and there is good secutiry.
Also untill this happen's the airport will and is pretty much closed to anything but food/water/medical people ect ect.
Untill you move into recovery mode you have to be very carefull using heavy equipment. They also need to figure out what they are going to do with the rubble........ if you go down now were are you going to put the rubble? No way you will be helping with SAR using heavy equipment.
I would not be supprised if the governemnt does not award contracts for people to go down with and or use heavy equipment for clean up... or at least job's doing it. I know after Katrina you could make pretty good money gutting flooded houses......