I don't have any studies. You have to understand that some slides were not included in this presentation, and I believe you'll receive them in a couple of days.
That's based on experience in helping clients achieve their transportation goals over about the last 12 years. We're normally talking about smaller companies, not the big industrial concerns. Most of them understand the situation quite well and are prepared. They'll hire a large airplane if that is the most efficient thing to do. They'll hire a bush plane if that's what they really need. After the bush plane drops them and their gear, I show up with a helicopter and carry them to their final destination, along with all of their things, one load at a time.
I've developed a pretty good sense of how much it costs, and that's the foundation for it.