Editing The Burning Line (section)

==F==
*'''Fire behavior''': The manner in which a fire reacts to the influences of fuel, weather, and topography.
*'''Fire camp''': Temporary camp established at large fires to provide food, rest, and other necessities to fire crews.
*'''Firebreak''': A natural or constructed barrier used to stop or check fires that may occur, or to provide a control line from which to work.
*'''Fire edge''': The boundary of a fire at a given moment.
*'''Fireline''': The part of a control line that is scraped or dug to mineral soil. Also called fire trail.  More generally, working a fire is called being "on the fireline."  May also refer to a "wet line" where water has been used to create a burn boundary in light fuels such as grass.
*'''Fireline handbook''': A small red booklet carried by U.S. firefighters on the firelines, as a quick reference on various firefighting topics.
*'''Fire retardant''': Any substance (except plain water) that by chemical or physical actions reduces flammability of fuels or slows their rate of combustion.  See ''retardant slurry'', ''AFFF'', and ''Foam'' as examples.
*'''Fire Lookout''': A person that keeps an eye for possible fire starts and conditions.  They can work in a [[Fire Lookout Tower]] or perform the duty as a role for a fire crew on the fireline.
*'''Fire lookout tower''': A structure located at a high vantage point to house and protect the person performing the duties of a Fire Lookout.
*'''Fire shelter''': An aluminized tent offering protection by means of reflecting radiant heat and providing a volume of breathable air in a fire entrapment situation. Carried as a safety tool, fire shelters should only be used in life threatening situations, as a last resort, as severe burns or asphyxiation often result.
*'''Fire shirt''': Distinctive yellow shirts made of [[Nomex]] or other lightweight materials of low combustibility, used as uniform [[personal protective equipment|PPE]] of wildland firefighters.
*'''Firestorm''': Extreme fire behavior indicated by widespread in-drafts and a tall column of smoke and flame, where added air increases fire intensity, creating runaway fire growth.
*'''Fire weather''': weather conditions that affect fire vulnerability, fire behavior and suppression.
*'''Flanks of a fire''': The parts of a fire’s spread perimeter that are roughly parallel to the main direction of spread.
*'''Flare-up''': Any sudden acceleration in rate of spread or intensification of the fire. Unlike blowup, a flare-up is of relatively short duration and does not radically change existing control plans.
*'''Flash fuels''': Fuels such as grass, leaves, draped pine needles, fern, tree moss and some kinds of slash, which ignite readily and are consumed rapidly when dry.
*'''Fuelbreak''': A natural or manmade change in fuel characteristics which affects fire behavior so that fires burning into them can be more readily controlled.
*'''Fuel load''': the mass of combustible materials available for a fire usually expressed as weight of fuel per unit area (e.g., 20 tons per acre).
*'''Fuel moisture''': Percent water content of vegetation, an important factor in rate of spread, ranging from dead-fuel and fine-fuel moisture (FFM), of 10 percent or less, to live-fuel moisture (LFM), of 60 percent or more. FFM can be estimated by weighing calibrated wood sticks.
*'''Fuel type''': An identifiable association of fuel elements of distinctive species, form, size, arrangement, or other characteristics that will cause a predictable rate of spread or resistance to control under specified weather conditions.