Project INTACT is a proposed government/industry program for a truly “intermodal” air cargo test. The program will demonstrate the movement of air freight in large intermodal containers and trailers that can efficiently and expeditiously be interchanged directly between air and surface modes of transportation. The ultimate goal of the demonstration is to spur the development of the air mode into an optimized “all mode” intermodal cargo system. The more immediate purposes are to substantiate technical and operational feasibility of the fully compatible intermodal air cargo system; to prototype test a particular intermodal system concept; and to verify that the needs of freight shippers can be fulfilled by such a system.