Refers to open fire front where no line has been constructed.

A six-digit number assigned to a specific weather station by the servicing National Weather Service Fire Weather Office.

The specific results expected from completing a project.

Fire which kills all or most of the living overstory trees in a forest and initiates forest succession or regrowth. Also explicitly describes the nature of fire in grasslands and some shrublands.

A nozzle is designed to provide either a solid stream or a fixed spray pattern suitable for applying water, wet water or foam solution.

Those wildland areas where the combination of vegetation, topography, weather, and the threat of fire to life and property create difficult and dangerous problems.

A number representing the chance that a given event will occur. The range is from 0% for an impossible event, to 100% for an inevitable event.

The agency or jurisdictional facility from which resources are allocated to incidents.

A combination chopping and trenching tool widely used in fireline construction, which combines a single-bitted axe blade with a narrow adze-like trenching blade fitted to a straight handle.

A parachute designed and rigged for dropping equipment and supplies from an aircraft.