Most shippers, carriers, and students of the freight market spend most of their time focused on a particular mode. It makes intuitive sense that you would focus on the mode that you spend the most time in which you are buying services or providing services. Net result, there are plenty of experts in rail, truck, and intermodal/container freight, and with the ongoing prodigious growth of e-commerce, there is a growing number of experts in parcel freight. That said, we continue to be surprised how little attention overall is given to airfreight.