I don't quite understand this issue about Helicopters, supply drops, logistics or what have you. As a former soldier, I would term these issues as 'Gatekeeper' issues. The real issue is not why aren't there Helicopters available for everyone, which in fact there is, its just the logisitics is cocked up, but the real issue, is what the **** exactly are we doing there. The whole equipment fiasco is a very clever smokescreen to take people's (and the press) eye off the main reason, but its not working, more and more the question is, why are we there.
Various reasons exist ranging from oil to other stuff, but this page might be an eye opener.
http://en.wikipedia.org/wiki/Unocal_Corporation