A chart of wind speed in relation to height, most commonly determined by a pilot balloon observation.

Military Operations Area found on aeronautical charts.

Method of carrying hose on the shoulders.

A fire burning with a size and intensity such that its behavior is determined by interaction between its own convection column and weather conditions above the surface.

A number related to the potential of firebrands to which a given area will be exposed during the rating day.

The period of time during which a fire danger rating value is considered valid or representative for administrative or other purposes. Normally it is 24 hours extending from midnight to midnight.

A lookout point that must be staffed to meet planned minimum seen area coverage in a given locality. For that reason, continuous service is necessary during the normal fire season and the lookout (person) is not sent to fires.

Term used in flight planning/following to document actual time spent flying between points.

Maximum pressure a centrifugal pump will attain when water flow is clamped or shut off.

The collected technical fire protection standards prepared by various committees of the National Fire Protection Association and published annually in 15 volumes.