2-256. CBRN active defense consists of tasks taken to prevent a CBRN attack by destroying the weapon or its delivery system. CBRN passive defense prevents or minimizes friendly unit vulnerability to the effects of CBRN threats or hazards. Commanders integrate CBRN defensive considerations into all mission planning. CBRN passive defense principles cover hazard awareness and understanding, protection (including mission-oriented protective posture gear, detection equipment, warning, and reporting) and contamination mitigation (including avoiding contamination and performing decontamination). CBRN passive defense is focused on maintaining the force’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. (See ATP 3-11.36 for additional information on CBRN passive defensive considerations.)