Strategy page brings us this blurb about supplying outposts in Afghanistan via air-drop.
Traditionally, resupply by airdrop is one of the least desirable methods. The cost, pound per mile, is exorbitant compared to, say, a truck, or even a helicopter. In addition, there’s other jobs the C-130s could be doing.
But think about this. One of the major risks to our troops in Afghanistan is the roadside bomb. If you aren’t driving supplies everywhere, you are less likely to be losing troops, not to mention the supplies and trucks lost as well.
Consider a notional platoon out in the middle of Nowhere, Afghanistan. While the platoon is going to need to be initially established by overland transport, once it is in place, resupply really only needs to be water, fuel, food and ammo and repair parts.. Water and fuel are bulky,but can still be airdropped. But food, ammo and repair parts are all well suited for air drop.
Here’s an Air Force C-17 making a delivery.