A line of hose, preconnected to the pump of a fire apparatus and ready for immediate use in attacking a fire. Contrasted to supply lines connecting a water supply with a pump or to feeder lines extended from a pump to various points around the perimeter of a fire. 

Values of one or more fire weather/fire danger indexes that have been statistically related to occurrence of fires (fire business). Generally the threshold is a value, or range of values where historical fire activity has significantly increased or decreased. 

A fuel complex, defined by volume, type condition, arrangement, and location, that determines the degree of ease of ignition and of resistance to control.

Amount of clouds and/or other obscuring phenomena that are detectable from the point of observation.

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.