Visibility of assets within the Defense Transportation System has always been a challenge for the Department of Defense (DOD). The United States Transportation Command (USTRANSCOM) is DOD's lead agency for establishing Intransit Visibility. In its effort to establish Intransit Visibility, USTRANSCOM developed the Global Transportation Network, which acts as a central repository for transportation information. This will enable USTRANSCOM to collect information about cargo and passengers at their points of origin, and to track their movement through each node of the transportation network. In order to simplify the communication process within the network, USTRANSCOM has initiated several improvements: a reduction in the number of computer systems that process transportation information; data standardization to promote compatibility between these systems; simplification of the Defense Transportation Regulation; and standardization of Electronic Data Interchange transaction sets.