Since Russia’s full-scale invasion of Ukraine in February 2022, the United States dramatically increased the amount and types of weapon systems provided to Ukraine. Through July 2024, the United States provided approximately $55 billion of military security assistance to Ukraine through PDA. The DoD transports U.S. defense items by air or sea from ports of embarkation in the United States to aerial ports and seaports of debarkation in the USEUCOM AOR for onward movement to Ukraine. For example, within USEUCOM, materiel is delivered via rail, truck, or air to the Logistics Enabling Node-Romania, where Logistics Enabling Node-Romania personnel receive, stage, inspect, and transfer the items for delivery to Ukraine. The 21st Theater Sustainment Command (TSC) conducts the onward movement of defense items from ports to Ukraine. The 21st TSC Theater Movement Center plans, coordinates, and executes movement control of defense items through the USEUCOM area of responsibility. Specifically, the 21st TSC uses the Movement Control Office (39th Transportation Battalion) to coordinate the onward movement of defense items through the USEUCOM area of responsibility from seaports of debarkation.