text: Environmental and Terrain Considerations for Fire Support
  SURVEY
  D-143. Extreme cold in arctic and subarctic regions adversely affects survey equipment operability.
  Accuracies may be degraded and impact on transfer data, massed fire, and unobserved fire.
  FIELD ARTILLERY MOVEMENT
  D-144. Considerations affecting planning for FA cold weather movement include:
  * Consider route reconnaissance in FA ground and air.
  * Determine ice thickness and load-bearing capacity before the FA crosses frozen lakes and rivers.
  * Consider that a vehicle may be required to position towed artillery weapons used in air assault
  operations conducted into snowy areas.
  * Plan for maximum use of aerial resupply.