Fire ignited outside the perimeter of the main fire by a firebrand.

The burning of understory prior to the sale of forest products to improve the efficiency of timber marking and harvesting.

An incident-based program to care for emergent and minor medical as well as common occupational health care problems of incident personnel. This program may be deployed to Type I and Type II incidents. Currently, this program is only available in three regions: Northwest (R6), Northern Rockies (R1) and Alaska (R10). In Alaska, the program is known as the Alaska Fire Medic Program.

Any road, trail, or route that will allow firefighting forces to reach the perimeter of a wildland fire.

The expected amount of annual rainfall. Average annual precipitation is an important component to determining the Keech-Bryam Drought Index (KBDI).

Fire ignited to expose adequate mineral soil and control competing vegetation until seedlings of the desired species become established.

The time, in seconds, required for the flaming front of a fire to pass a stationary point at the surface of the fuel. The total length of time that the flaming front of the fire occupies one point.

A written or oral agreement between and among agencies/organizations and/or jurisdictions that provides a mechanism to quickly obtain assistance in the form of personnel, equipment, materials, and other associated services. The primary objective is to facilitate the rapid, short-term deployment of support prior to, during, and/or after an incident.

The size of a piece of fuel, often expressed in terms of size classes.

Delineated area surrounding a base which can be reached first by the ground or air attack units assigned to the base.