text: Chapter 7
  Figure 7-3. Chemical, biological, radiological, and nuclear passive defense architecture
  7-82. When established, the CBRN working group led by the CBRN officer includes members from the
  protection-working group, subordinate commands, host-nation agencies, and other unified action partners.
  The CBRN working group—disseminates CBRN operations information,including trend analysis,defense
  best practices and mitigating measures, operations, the status of equipment and training issues, CBRN
  logistics, and contamination mitigation and remediation efforts and refines the CBRN threat, hazard, and
  vulnerability assessments. The working group helps to develop,train,and rehearse a CBRN defense plan to
  protect personnel and equipment from an attack or incident involving CBRN threats or hazards. CBRN threat
  and hazard assessments made by the working group help determine initial,individual protective equipment
  levels and the positioning of decontaminants. Force health personnel maintain the medical surveillance of
  personnel strength information for indications of force contamination,epidemic,or other anomalies apparent
  in force health trend data. (SeeFM 3-11 and ADP 3-37 for additional information.)
  Note. (See chapter 6 for information on countering weapons of mass destruction [CWMD] and
  the explosive ordnance disposal company when supporting the BCT.)
  7-83. Force health protection (see ATP 4-02.8), measures to promote, improve, conserve or restore the
  mental or physical well-being of Soldiers, enable a healthy and fit force, prevent injury and illness, and
  protect the force from health hazards. Defensive actions can result in prolonged occupation of static positions
  and corresponding exposure of personnel to diseases, weather and other health hazards and environmental
  affects that can quickly degrade readiness. The commander enforces environmental disciplines, such as
  hydration, sanitation, hygiene, protective clothing, and inspection of potable water supplies. Defensive
  actions also may entail sustained enemy bombardments or attacks resulting in dramatic effects on the mental
  and behavioral health of unit personnel. Soldiers can become combat ineffective from heavy indirect fire
  even if exposure is for short durations. Commanders deliberately emplace systems for combat stress
  identification and treatment to reduce the return to duty time of affected personnel. (See FM 4-02 and
  ATP4-02.3 for additional information.)
  7-84. When planning for base camp security and defense it is critical to remember that a properly designed
  perimeter security system should be an integrated, layered, defense in-depth that takes advantage of the
  security area. BCT commanders,supported by their staff,evaluate mission variablesfocusing on the threat
  to establish a viable perimeter defense plan. Planning for perimeter security and defense,like all protection
  measures integrates fires and obstacles,within the context of mission and operational variables and associated