C7.20.1. If possible, items returned to the United States for servicing should be moved by a purchaser or a purchaser’s Foreign Military Sales (FMS) freight forwarder. The details of the transfer are included in a Transportation Plan, if applicable, in accordance with Section C7.13. Arms, Ammunition, & Explosives or Sensitive items are returned through a DoD-controlled ocean or aerial port as indicated by the Security Risk Category. The purchaser and FMS freight forwarder are responsible for clearance through U.S. Customs and any other necessary documentation, as well as the purchaser’s Customs. Onward movement to the designated CONUS repair facility depends on the Delivery Term Code used. The purchaser and FMS freight forwarder should ensure that these shipments are accompanied by appropriate shipping documents and that import and/or export documents are done correctly when the items enter and exit CONUS. Under special circumstances, the Defense Transportation System can be used to return items to CONUS for service and return. All HC 1 articles returning to CONUS must have a country-specific EX-Number, see Section C7.16.