text: Chapter 2
  2-46. During theater opening operations, the HROB deploys as an element of the ESC DMC, and
  sustainment brigade SPO section, focusing on the establishment of the personnel accounting portion of the
  RSOI process along with initial postal and HR support to casualty operations. The HROB receives technical
  guidance from the TPOC and operational guidance from sustainment command channels. Technical guidance
  includes mission analysis, determining best methods of support, and passing the requirement to the HR
  element for execution. If noncombatant evacuation operations occur within an area the HROB is overseeing,
  they can coordinate with their assigned HR companies to assist in operations where feasible—for example,
  personnel accountability support and provide technical guidance and coordination with local brigades to
  ensure accountability of noncombatants. For further guidance on noncombatant evacuation operations, refer
  to Joint Publication (JP) 1-0, Joint Personnel Support and JP 3-35, Deployment and Redeployment
  Operations. Refer to ATP 1-0.2 for detailed organizational functions and responsibilities of the HROB, and
  for specific information on the ESC and sustainment brigade commander’s Key Performance Indicators for
  HROBs.
  THEATER GATEWAY PERSONNEL ACCOUNTABILITY TEAM
  2-47. The TG PAT is attached to an HR company within the sustainment brigade assigned the theater
  opening mission. It provides personnel accounting support to the AOR by coordinating and providing
  personnel accounting operations using the Tactical Personnel System and DTAS as personnel enter, transit,
  and depart the theater at inter-theater ports of embarkation and debarkation. The TG PAT deploys as part of
  the theater early entry element and is initially augmented by an HR company HQ with at least two HR
  platoons at the primary inter-theater APOD. More than one TG PAT may be required if multiple inter-theater
  aerial ports and/or sea ports of embarkation become active. Units entering and departing theater with unit
  integrity will leverage self-accounting capabilities resident in the S-1 staff sections but must coordinate with
  the TG PAT for integration of unit personnel into the theater database. Human resources squads may be
  allocated to multiple theater entry points to perform the personnel accounting mission in place of a TG PAT
  if transit numbers outside of supported units do not exceed 600 personnel daily.
  2-48. The TG PAT receives technical guidance from the TPOC personnel accountability and systems
  division and the supporting HROB. The TPOC’s personnel accountability and systems division monitors and
  recommends distribution and emplacement of HR squads to perform the personnel accounting mission. The
  HROB monitors the establishment and operations of HR squads at forward locations. The HR company HQ
  provides command and control as well as administrative and operational support to the TG PAT and forward
  operating HR squads.
  2-49. The TG PAT requires a capability to communicate digitally through web and voice, both secure and
  non-secure, to HR formations with personnel accountability elements, G-1/AG sections, logistical support
  elements, and other branches of Service. Operational guidance and directives are initiated by the TSC (TPOC)
  and should be issued in OPLAN or OPORD format. Theater gateway personnel accountability teams are
  global force pool units of operational forces. In support of the readiness model, TG PATs are typically
  categorized as theater available structure, deployed under combatant command authority and established for
  the primary purpose of fulfilling global operational requirements of both an enduring and rotational nature.
  Theater gateway personnel also coordinate with other Services and other supporting units for operating space
  at the terminal, flight schedules with movement control teams, and inform the sustainment brigade of
  follow-on transportation requirements to assist in synchronizing all logistical support. The TG PAT is a
  technical section that is subordinate to the HR company commander. The company commander is responsible
  for executing the TG PAT mission with the assistance and expertise of the TG PAT section.
  2-50. The TG PAT also provides data integration support for all personnel transiting the theater or at
  intra-theater processing points where an HR squad with a personnel accounting mission is located. To support
  unit S-1s during RSOI and redeployment operations, the TG PAT has the capability to perform limited EPS
  (for example, processing CACs, updating the DD Form 93, SGLV 8286, and SGLV 8286A). Any other
  sustainment requirements for life support (for example, billeting, feeding, equipping, and transportation of
  transient personnel) are conducted by units such as the regional support group or the sustainment brigade.
  Refer to ATP 1-0.2 for detailed organizational functions and responsibilities of the TG PAT.