I suspect that one of the biggest obstacles to getting supplies out is the typical rich-western demand for near absolute safety against an imagined violent threat that is being overestimated. A vicious cycle of delay that is making the risk higher than it might otherwise be.

Higher security demands mean more trucks are needed, it takes more time to organize, and it delivers less per trip. Pictures of forty armed troops protecting twenty relief workers and three trucks transporting one truckload of supplies was a perfect illustration. Ironically the delays also mean that people are ever more angry and frustrated. Unrealistic estimates of risk are often self-fulfilling prophecies because every delay further jacks up the risk. Which then justifies further delay. I hope they don't get involved in this spiral but it wouldn't surprise me.

IMHO too many American relief specialists, most I have met, are romantic idealists who are too frightened by minor confrontations and loss of control to take the risks necessary to avoid it. Haitians are, on average, much more tolerant and less prone to violence than your average American but there are limits.

Also don't underestimate a three day supply. A normal three day supply can be stretched to six if need be. Most kits figure 1200 calories or more per person per day. Whereas 400 calories a day is closer to actual minimum.

Pronouncements that 30 days is the "minimum" means your lowering the numbers of people who will have anything at all. Except for the very richest Haitians, who are more likely to have other resources, nobody would be able to afford stocking up 30 days supply. While even the poorest Americans typically have more resources than most Haitians a lot of them can't afford to stock up a 30 day supply.