text: Appendix B
  B-45. Graphically portray a ZF (see figure B-11) using broken lines (solid lines if unit boundaries are used
  as depicted), with designating Arabic numerals, for example "ZF3" For more information on zone of fire
  establishment see JP 3-09.
  Figure B-11. Zone of fire example
  Note. JP 3-09 directs the use of only Arabic numerals to identify a ZF. The AFATDS software
  uses the zone of responsibility graphic to implement a ZF. The zone of responsibility line or area
  name field allows the use of uppercase alphabetic characters (A-Z), numeric characters (0-9), and
  blank spaces to identify that graphic.
  B-46. The commander of the maritime force providing naval surface fire support establishes and assigns
  zones of fire for the forces. The ZF for an artillery BN or a ship assigned the support relationship or mission
  of DS normally corresponds to the AO of the supported unit. The ZF for an artillery BN or a ship assigned
  the support relationship or mission of GS should be within the boundaries of the supported unit. When used
  in conjunction with naval gunfire, the size and shape of a ZF will depend on the following:
  * Boundaries. To permit ready identification by the spotter and the individual FS ship, the
  boundaries of the zones of fire should be recognizable both on the terrain and on a map. It may be
  necessary to divide a large ZF into two or more smaller zones due to considerations discussed in
  subsequent paragraphs. The boundaries of zones of fire of DS ships should correspond to the zones
  of action of the landing force units supported.
  * Size. The size of each ZF should be such that the FS ships, or ships assigned to observe and destroy
  targets, will be able to accomplish the mission in the time allocated. When zones of fire are
  delineated, known or suspected targets scheduled for destruction in each zone are plotted, and then
  the number and type of targets are compared to the capability of the ship.