The horizontal and vertical spacing of aircraft working over or near a wildfire or other incident.

To reduce the flame or heat on the more vigorously burning parts of a fire edge.

The greatest horizontal distance at which selected objects can be seen and identified, or its equivalent derived from instrumental measurements.

Device which uses the exhaust gas flow of an engine for priming a centrifugal pump.

Metal wrench used to tighten and free hose connections.

A fire that advances from top to top of trees or shrubs more or less independent of a surface fire. Crown fires are sometimes classed as running or dependent to distinguish the degree of independence from the surface fire.

A one-person unit of fire tools, equipment, and supplies prepared in advance for carrying on the back.

An official record of a fire, generally including information on cause, location, action taken, damage, costs, etc., from start of the fire until completion of suppression action. These reports vary in form and detail from agency to agency.

Smoke that has drifted from its point of origin and is no longer dominated by convective motion. May give false impression of a fire in the general area where the smoke has drifted.

Crimping device for stopping the flow of water in a hose.