Well the US forces are already being touted to provide security in Haiti.
Can someone spell "Rome"?
TR, your "one second after" scenario is taking place, sorta kinda.
There was a scenario where a guy in a van came up to the airport a few hours after the quake with sub sandwiches and water. At first the women and children were allowed to get food, then the stronger males pushed them out of the way and when the food was gone, it turned to mild chaos. This was just a few hours after the quake. Imagine what it will be like a week from now. NO food, minimal water.. aid hard to get in due to logistics. Acess from sea to the port is okay, but the road is messed up. Air traffic control is two Coasties with radios on the lawn. Are we good or what??
Roads messed up. It was suggested that supplies be helo'd to the parts of town that need them due to road problems.
I think that we can all look at this as a case study for when or if the shtf scenarios. There will always be those few who rise to the occasion to lead and organize to inspire others. There will always be those who just give up and expect others to do for them.
YMMV
AM