text: Chapter 12
  Departments, recommend the designation of a TLAMM as necessary to ensure effective and efficient medical
  supply chain support to the CCDR. Once designated, the unit serving as the TLAMM remains within the
  chain of command of their parent organization (such as the parent combatant command, DOD component,
  or other headquarters element). As designated TLAMMs, the Army’s theater medical materiel centers use
  DOD standard business processes and systems to provide theater-level Class VIIIA supply support to joint
  forces operating in their supported area of responsibility.
  12-21. Title 10, United States Code requires that each Service provide its own logistics support, which
  makes MEDLOG support a Service responsibility. However, in joint operations, a CCDR may assign
  specific common user logistics functions, to include both planning and execution, to a lead Service. The
  Army is typically the predominant provider of forces in unified land operations and owns the preponderance
  of MEDLOG capability. Therefore, CCDRs often assign the ASCC (or Army component of a joint task
  force) responsibility to plan and execute MEDLOG support to all Services and multinational partners (when
  directed) operating in the theater. This function is known as SIMLM support. When assigning SIMLM
  responsibility, the CCDR specifies the scope and duration of MEDLOG support to be provided (such as
  medical supply, medical equipment maintenance, or optical fabrication). The performance of SIMLM
  responsibilities requires close coordination with the ASCC surgeon, MEDCOM (DS), and medical elements
  of the supported Services to ensure mutual understanding of requirements, expectations, and processes for
  MEDLOG support. Refer to ATP 4-02.1 and JP 4-02 for additional information.