text: Reconnaissance and Security
  considers alternate means of conducting CBRN reconnaissance such as reconnaissance elements,engineers,
  and maneuver units. (See ATP 3-11.37.) At a minimum, the commander and staff consider the following
  actions when planning and preparing for CBRN reconnaissance and surveillance:
  (cid:122) Use the IPB process to orient on CBRN enemy NAI.
  (cid:122) Pre-position reconnaissance and surveillance assets to support requirements.
  (cid:122) Establish command and support relationships.
  (cid:122) Assess the time and distance factors for the conduct of CBRN reconnaissance and surveillance.
  (cid:122) Report all information rapidly and accuratelyto higher.
  (cid:122) Plan for resupply activities to sustain CBRN reconnaissance and surveillance operations.
  (cid:122) Determine possible locations for post-mission decontamination.
  (cid:122) Plan for fire support requirements.
  (cid:122) Plan fratricide prevention measures.
  (cid:122) Establish medical evacuation procedures.
  (cid:122) Identify CBRN warning and reporting system procedures and frequencies.
  RECONNAISSANCE OPERATIONS
  5-39. Reconnaissance operations validate the IPB process by confirming or denying natural and manmade
  obstacles,trafficability of routes,viability and utility of key terrain,and enemy composition,disposition,and
  strength. As mission analysis identifies information gaps,the BCT commander and staff develop information
  requirements to fill those gaps. During the operations process,information requirements develop into priority
  intelligence requirements, which further develop tasks that, when executed, answer priority intelligence
  requirements. The commander and staff continuously reevaluate information gaps and refocus the
  reconnaissance effort with the seven reconnaissance fundamentals. The commander establishes priorities for
  assessment in planning guidance, CCIRs (priority intelligence requirements and friendly force information
  requirements),EEFI,and decision points. The commander utilizes one of the five typesof reconnaissance as
  they collect and assess information. (SeeFM 3-90-2 for additional information.)
  RECONNAISSANCE FUNDAMENTALS
  5-40. Reconnaissance fundamentals,discussed in paragraphs 5-41to 5-46,remind planners and practitioners
  of the inherent characteristics required to execute successful reconnaissance. Failure to understand the
  following seven fundamentals results in incomplete reconnaissance and missed opportunities.
  Ensure Continuous Reconnaissance
  5-41. The BCT conducts reconnaissance before, during, and after all operations. Before an operation,
  reconnaissance fills gaps in information about the enemy, the terrain, and civil considerations. During an
  operation,reconnaissance provides the BCT commander with updated information that verifies the enemy’s
  composition,dispositions,and intentions as the battle progresses. After an operation,reconnaissance forces
  maintain contact with the enemy to determine the enemy’s next move and collect information, including
  terrain and civil considerations, necessary for planning subsequent operations. When current operational
  information is adequate,reconnaissance forces gather information for branches and sequels to current plans.
  As operations transition from a focus on one element of operations to another, the nature of priority
  intelligence requirements and information requirements change. Reconnaissance over extended distances and
  time may require pacing reconnaissance assets (surveillance assets can enable this effort) to maintain the
  effort, or rotating units to maintain continuous coverage. The human and technical assets used in the
  reconnaissance effort must be allowed time for rest, resupply, troop leading procedures, and preventive
  maintenance checks and services. The commander must determine not only where, but also when, the
  maximum reconnaissance effort is required and pace the commitment of available reconnaissance assets to
  ensure adequate assets are available at those critical times and places.