text: Chapter 1
  aviation. When aviation units are assigned their own AO, they accept the following responsibilities for the
  duration of the assignment:
  * Terrain management.
  * Information collection.
  * Civil military operations.
  * Movement control.
  * Clearance of fires.
  * Security.
  * Personnel recovery.
  * Airspace control.
  * Minimum essential stability tasks.
  1-40. Aviation units typically operate across the entire AO of the supported unit. Maneuver throughout the
  AO is governed by phase lines (PLs), airspace control areas, standard use Army Aviation flight routes, or
  other control measures which permit simultaneous operations and converging of effects against the enemy.
  If an aviation unit is operational control (OPCON) or tactical control (TACON) to a supported maneuver
  force, the aviation unit operates within that unit’s boundaries unless other coordination is made. The
  Aviation unit develops air and ground plans in conjunction with the supported unit. If an aviation unit is not
  OPCON or TACON to a supported unit, it must coordinate not only airspace and terrain management but
  also locations for forward arming and refueling points (FARPs), command posts (CPs), and radio
  retransmission sites.
  CLOSE, DEEP, SUPPORT, AND CONSOLIDATION AREAS
  1-41. The close, deep, support, and consolidation framework describes the physical arrangement of forces
  in time, space, and purpose (figure 1-1).
  Figure 1–1. Close, deep, support, and consolidation areas