1-28. Theater distribution is the flow of personnel, equipment, and materiel within a theater to meet the geographic combatant commander's missions (JP 4-09). Theater distribution is a process of synchronizing all elements of the logistics system to deliver the right things to the right place at the right time to support the geographic combatant commander (GCC). Theater distribution begins at the port of debarkation and ends at the unit. Personnel and materiel enter the theater by surface (land or water) or by air and move through the various transportation modes/hubs/nodes to their destination or point of use.