text: Defense
  7-79. Chemical, biological, radiological, and nuclear environment is an operational environment that
  includes chemical, biological, radiological, and nuclear threats and hazards and their potential resulting
  effects (JP 3-11). Within the BCT area of operations, CBRN environment conditions can be the result of
  deliberate enemy or terrorist actions or the result of an industrial accident. Possible CBRN threats include
  the intentional employment of, or intent to employ, weapons or improvised devices to produce CBRN
  hazards. CBRN hazards include those created from accidental or intentional releases of toxic industrial
  materials,biological pathogens,or radioactive matter. Toxic industrial material is a generic term for toxic or
  radioactive substances in solid,liquid,aerosolized,or gaseous form that may be used or stored for industrial,
  commercial,medical,military,or domestic purposes. Toxic industrial material may be chemical,biological,
  or radiological. (SeeFM 3-11 for more information on CBRN hazards.)
  7-80. Chemical,biological,radiological,and nuclear defenseare measures taken to minimize or negate the
  vulnerabilities to, and/or effects of, a chemical, biological, radiological, or nuclear hazard or incident
  (JP3-11). The BCT commander integrates CBRN defense considerations into mission planning depending
  on the CBRN threat. (SeeFM 3-11 and ATP3-11.37for additional information.)Commanders at all echelons
  maintain the effectiveness of their force in CBRN environments by establishing CBRN defense plans that—
  (cid:122) Estimate enemy intent,capabilities,and effects for CBRN.
  (cid:122) Provide guidance to the force on necessary protective measures.
  (cid:122) Apply the IPB output to develop CBRN reconnaissance plans to answer priority intelligence
  requirements.
  (cid:122) Establish the employment criteria of CBRN enablers to counter CBRN threats.
  (cid:122) Establish a logistic support plan for long-term CBRN operations.
  (cid:122) Establish CBRN warning and reporting requirements.
  7-81. Operationally, CBRN passive defense maintains the commander’s ability to continue military
  operations in a CBRN environment while minimizing or eliminating the vulnerability of the force to the
  degrading effects of those CBRN threats and hazards. Tactical-level doctrine has traditionally segregated
  CBRN passive defense into the distinct principles of contamination avoidance, protection, and
  decontamination. While these principles remain valid,they are now recognized to be components of the more
  expansive concepts of hazard awareness and understanding and contamination mitigation. Since hazard
  awareness and understanding largely focuses strategic aspects of operations in a CBRN environment,tactical
  level doctrine is organized around the key activities (seefigure 7-3on page 7-18) of CBRN protection and
  contamination mitigation.
  (cid:122) Chemical biological, radiological, and nuclear protection consists of measures taken to keep
  chemical,biological,radiological,and nuclear threats and hazards from having an adverse effect
  on personnel, equipment, and facilities (ATP 3-11.32). CBRN protection encompasses the
  following activities: protect personnel,equipment,and facilities.
  (cid:122) Contamination mitigationis the planning and actions taken to prepare for,respond to,and recover
  from contamination associated with all chemical,biological,radiological,and nuclear threats and
  hazards to continue military operations (JP 3-11). The two subsets of contamination mitigation are
  contamination control and decontamination. (SeeATP3-11.32for a detailed discussion of CBRN
  passive defense activities.)