text: Fire Support in Depth During Large-Scale Combat Operations
  CLEARANCE OF FIRES
  6-166. The rear area CP must be staffed with the necessary intelligence, FS, and airspace control personnel
  to plan, answer calls-for-fire, and coordinate additional enablers for support area security forces and units
  transiting through the rear area. The commander must decide how to deconflict fires in the rear area. Liaison
  personnel can facilitate the deconfliction of fires in support of units moving in the rear area.
  6-167. The BCTs air defense airspace management cell must be tied into the division JAGIC to clear
  airspace for the rear area. In this instance the BCT commander must clear fires for the rear area. Targeting
  working groups and target coordination boards must be aligned with close, deep, and rear operations to
  compete for resources.
  6-168. FSCOORD and FS personnel must be aware of their left and right boundaries and the FS assets of
  adjacent units. They must have FSCMs in place and be aware of clearance procedures for cross boundary
  fires. CAB assets should be task organized to respond to threats in the rear area. The FSCOORD and FS
  personnel must integrate base cluster defenses into rear area support plans.
  6-169. Conditions and triggers must be established for shifting the FSCMs. In addition, triggers must be
  established for moving the division and BCT rear boundaries forward as the rear area conditions change.
  There must also be procedures in place for the battle hand over NAIs, TAIs and any significant activities
  logs.
  6-170. Figure 6-8 on page 6-40, shows the complexity of FS in the rear area. In addition to coordinating FS
  for the BCT in a division's rear area, the rear area CP or rear area FSCOORD must also consider airspace
  and terrain deconfliction for division- and corps-level GS and GSR shooters supporting the close and deep
  area operations. Additionally, movement along critical lines of communication (main supply routes and
  alternate supply routes) may be contested and may require FS within the rear area to facilitate movement to
  and from supported units in the close area. The HQ elements, support nodes, and base clusters likely in and
  around the support area will present large target signatures and increased ground and air traffic, requiring
  additional assets and coordination through the rear area CP. The fight in the rear area is complex and will
  require detailed planning and rehearsal to adequately support operations in the close and deep areas.