text: Fire Support Coordination Measures
  B-63. The CFZ requires a minimum of 3 and a maximum of six anchor points to define the boundary of the
  area. The size and shape of the CFZ is determined by the anchor points and may be circular, rectangular, or
  irregular. When possible, the effective date-time-group (moveable and scalable) should be placed within the
  graphic boundary, but it may be placed outside the graphic or within a computer drop box if necessary.
  Figure B-16. Critical friendly zone example
  B-64. CFZs may be phased along the maneuver axis of advance and activated when entered by friendly
  forces. This is particularly important in those areas where friendly forces are most vulnerable (for example,
  river-crossing sites and areas open to easy visual observation). Typical CFZs include maneuver assembly
  areas, CPs, forward arming and refueling points, friendly breaching sites and other troop concentrations. The
  supported 072508 commander may also designate critical civilian infrastructure as a CFZ.
  B-65. Designation of a CFZ requires WLR coverage of the designated area and attack/delivery assets to
  provide counterfire. The supporting FA unit's automated FS system places any WLR acquired enemy indirect
  fire into a CFZ in priority ahead of all other counterfire targets with an immediate call for fire.
  CALL FOR FIRE ZONE
  B-66. A call for fire zone is a weapon locating radar search area from which the commander wants to
  attack hostile firing systems. A CFFZ would be placed around an enemy FS position identified as a HPT.
  The CFFZ provides the second most responsive priority for fires from the radars.
  B-67. On the basis of IPOE and other target indicators, CFFZs are used to monitor suspect areas from which
  threat indirect fires may jeopardize the mission. Establishing a CFFZ will facilitate immediate counterfire of
  enemy artillery disrupting the friendly scheme of maneuver.
  B-68. A CFFZ is graphically portrayed (see figure B-17 on page B-22) by a solid black line defining the area
  and the letters "CFF ZONE," followed by the establishing HQ within, plus the effective date-time-group. The
  CFFZ requires a minimum of three and a maximum of six anchor points to define the boundary of the area.
  The size and shape of the CFFZ is determined by the anchor points and may be circular, rectangular, or
  irregular. When possible, the effective date-time-group (moveable and scalable) should be placed within the
  graphic boundary, but it may be placed outside the graphic if necessary.