text: Appendix B
  necessities when possible, and maximizing the use of host-nation facilities such as ports, airfields, roads, and
  barracks. Missions include base camps and improving ports and airfields. Engineer assets in the corps and
  divisional support areas are primarily focused on mobility and limited protection tasks to improve
  survivability. Theater commanders decide on construction standards early in the planning process. (See
  ATP 3-34.40 for information on constraints or planning considerations for construction missions.)
  Protection
  B-14. Combatant commanders must take protection into consideration as large-scale combat operations entail
  significant operational risk. Protection emphasizes the importance of planning and expanding protection
  priorities, including protecting mission partners, civilian populations, equipment, resources, infrastructure,
  and cultural landmarks across the range of military operations. The synchronization, integration, and
  organization of protection capabilities and resources to preserve combat power from the effects of threats and
  hazards are essential.
  B-15. The ARFOR plays a significant role in setting the theater, which includes conducting activities to
  ensure protection of the force while preserving combat power and increasing the probability of mission
  success. Combatant commanders must consider protection requirements for assets such as aerial ports of
  debarkation, seaports of debarkation, lines of communication, and critical infrastructure at theater level, and
  requirements such as support areas, command posts, and signal nodes at corps and division level. The
  ARFOR anticipates changes to protection prioritization and prepares for reassessment and transition of assets
  throughout operations to coincide with the commander’s priorities.
  B-16. Protection occurs throughout all operations, and ARFOR responsibilities include executing key
  protection tasks such as survivability, coordination of air and missile defense support, CBRN operations,
  police operations, and population and resource control.
  B-17. If the JFC elects to establish a JSA in the JOA, the ARFOR normally determines its structure and its
  controlling headquarters. The options for the JSA depend on the threat and the mission variables, particularly
  the forces available. If the threat to the JSA is low to moderate, the theater army commander may tailor the
  ARFOR with a MEB specifically for controlling the JSA. The MEB may include additional military police
  and intelligence assets. If the threat to theater bases and lines of communications is significant, the theater
  army may tailor the ARFOR with an additional BCT to control that AO. A third option, in the case of very
  high threat levels, is to assign the mission to an Army division with BCTs and one or more MEBs.
  Chemical, Biological, Radiological, and Nuclear
  B-18. CBRN capabilities support operations conducted across the range of military operations by assessing
  CBRN threats and hazards, providing protection against CBRN hazards, mitigating CBRN incidents, and
  providing hazard awareness and understanding. All CBRN functions share a common fundamental purpose
  that fits within the protection warfighting function to achieve or contribute to national objectives.
  B-19. The ARFOR staff integrates CBRN considerations as part of protection. They are responsible for
  understanding the current CBRN conditions and integrating this understanding into the intelligence
  preparation. Ultimately, the ARFOR commander identifies the need and directs protection considerations
  and guidance concerning CBRN hazards to the force.
  Signal
  B-20. As commanders operate across the range of military operations, signal capabilities must be tailorable
  to meet the commander’s requirements. The way signal formations deliver communication services varies
  based on the mission. Communications requirements during theater security cooperation activities from fixed
  posts, camps, or stations differ from a BCT commander’s requirements during a movement to contact mission
  in large-scale combat operations. Signal staff officers and leaders need to articulate to commanders what
  communications capabilities are available during critical points of an operation and how these capabilities
  support the exercise of command and control.