text: Chapter 2
  flow of the deploying forces’ equipment and supplies from the aerial ports of embarkation to the theater. For
  additional information see ATP 3-35.
  MILITARY SEALIFT COMMAND
  2-11. Military Sealift Command is the Navy’s sealift component command of USTRANSCOM. The mission
  of Military Sealift Command is to provide common-user and exclusive-use sealift transportation services to
  include ocean transportation of equipment, fuel, supplies, and Army prepositioned stocks and ammunition to
  sustain U.S. forces worldwide during peacetime and in war for as long as operational requirements dictate.
  MILITARY SURFACE DEPLOYMENT AND DISTRIBUTION COMMAND
  2-12. SDDC is an operational-level Army force designated by the Secretary of the Army as the ASCC of
  USTRANSCOM and a major subordinate command of USAMC. SDDC exercises administrative control
  (ADCON) authority and responsibility on behalf of the USAMC commander over Army forces assigned to
  USTRANSCOM and exercises operational control (OPCON) over Army forces as delegated by the
  USTRANSCOM commander. SDDC is also the surface transportation service provider as part of
  USTRANSCOM’s Joint Deployment and Distribution Enterprise ATP 3-35 and ATP 4-93 provide additional
  detail on SDDC.
  SDDC FUNCTIONS AND STAFF RELATIONSHIPS
  2-13. SDDC performs single-port management functions necessary to support the strategic flow of the
  deploying forces’ equipment and sustainment supply in the seaport of embarkation and hand-off to the CCDR
  in the seaport of debarkation (SPOD). SDDC executes its single-port management function from the national
  strategic level of warfare through the theater strategic level of warfare. SDDC has port management
  responsibility through all phases of the theater port operations continuum. It conducts strategic port site
  surveys, coordinates with Army and Navy operational forces for support to enable strategic ship download
  and throughput at common-user commercial ports, and commercial contract fixed-port support for
  deployment. SDDC’s subordinate brigades are postured across CCMD AORs in order to ensure flexibility
  and responsiveness based on the unique needs of the various regions.
  2-14. As the single port manager for seaports, SDDC provides strategic deployment status information to the
  CCDRs and manages the workload of the SPOD port operator based on the CCDR’s priorities and guidance.
  SDDC transportation brigades and other SDDC units operate ports that use stevedores. If United States Army
  stevedores are used, transportation brigades are assigned to the CCMD to operate the port. As an ASCC to
  USTRANSCOM, SDDC executes the following functions:
  • Plans, coordinates, and synchronizes surface transportation movements to move, deploy, and sustain
  DOD forces and build operational readiness and lethality.
  • Provides surface and multimodal transportation services to DOD and designated multinational and
  interagency entities.
  • Plans and executes oversight of command acquisitions for transportation services to support CCMD
  requirements for enduring and contingency operations and infrastructure.
  • Books freight on commercial vessels in accordance with contractual agreements and provides
  appropriate support to movements occurring on government and chartered vessels in coordination
  with Military Sealift Command.
  • Performs water terminal clearance authority functions as required.
  • Conducts port surveys, inspections, and certifications via the Transportation Engineering Agency
  report.
  2-15. SDDC executes assigned Title 10 responsibilities on behalf of USAMC, which has ADCON of SDDC.
  SDDC is OPCON to USTRANSCOM for operational and joint training, and other matters for which
  USTRANSCOM is responsible.
  DEFENSE LOGISTICS AGENCY
  2-16. DLA is the nation’s combat logistics support agency, providing nearly 100 percent of the military’s
  consumable items, and is the DOD EA for subsistence, construction/barrier material, medical materiel, and
  Defense Logistics Management Standards. It also provides distribution and disposal support as appropriate,