NWCG Glossary of Wildland Fire (PMS 205)

An appointment/agreement that meets the following conditions:

Term of appointment is based on duration of the emergency situation for which the employee is hired.
Employee receives compensation for work based on Administratively Determined (AD) Pay Plan for Emergency Workers

Data about the location, identify, history, validity, lineage, source, and destination of other data.

Mid-level, parent grouping to sort and filter actions planned and implemented to address threats mitigated by the wildland fire management program.

A numerical index related to the ability of the atmosphere to disperse smoke. Different agencies use different scales [e.g., in South Carolina, the current scale is based on ventilation factor and ranges from 1 (poor) to 5 (excellent)].

Defect on the surface of a tree resulting from a wound where healing has not re-established the normal cross-section.

Caused by reduced pressure and conversely increased vacuum on the water inside the suction of a pump, as a result of the following:

Excessive lift.
Small or long suction hose.
Blocked or small strainer.
Warm water.
High altitude.
Combination of any.

According to the American Meteorological Society, the height ascribed to the lowest layer of clouds or obscuring phenomena when it is reported as broken, overcast, or obscuration and not classified "thin" or "partial." The ceiling is termed unlimited when the foregoing conditions are not satisfied.

Diffuse and especially subcutaneous inflammation of connective tissue.

According to the American Meteorological Society, same as centigrade temperature scale, by convention. Centigrade temperature scale is a temperature scale with the ice point of water at 0 degrees and the boiling point at 100 degrees.

Method of broadcast burning in which fire is ignited in the center of the area to create a strong draft; additional fires are then ignited progressively nearer the outer control lines (sometimes in one step) as indraft increases so as to draw the flames and smoke toward the center. 

The city and state pairing for the dispatch center location

Pump which expels water by centrifugal force through the ports of a circular impeller rotating at high speed. With this type of pump, the discharge line may be shut off while the pump is running without damaging the pump or hose.

Generally, recognition by the private sector of a nongovernmental and voluntarily achieved standard.

The agency official at the home unit who is responsible for authorizing and granting position certification per agency policy. The agency official is responsible for completing the agency certification block located on the inside front cover of a Position Task Book. 

Unit of measure in land survey, equal to 66 feet (20 M) (80 chains equal 1 mile). Commonly used to report fire perimeters and other fireline distances, this unit is popular in fire management because of its convenience in calculating acreage (e.g., 10 square chains equal one acre). 

Lightning in a long zigzag or apparently broken line.

The orderly line of authority within the rank of incident management organizations.

A powered garden, agricultural, and/or forestry tool used to trim weeds, small trees and other foliage.

Carbonaceous material formed by incomplete combustion of an organic material, most commonly wood; remains of burned materials.

In fire simulation, a darkened area within the fire perimeter; usually indicates fire has already passed through; usually created by an opaque material blocking out a selected portion of basic scene illumination.

The vertical distance above ground scorched or blackened on a tree bole.

Hose filled with water under pressure and ready to use.

Vehicle that carries crew gear, supplies, and operational equipment for initial/extended attack.

A temporary fireline constructed at right angles to the control line and used to hold a backfire in check as a means of regulating the heat or intensity of the backfire.

A valve that permits flow of liquid through a hose or pipe in one direction but prevents a return flow. Uses include the prevention of backflow on uphill hose lays, loss of prime with centrifugal pumps and chemical contamination in fire chemical mixing systems. 

The process whereby resources first report to an incident. Check-in locations include incident command post (ICP), base or camps, staging areas, helibases, or direct to a tactical assignment. All responders, regardless of agency affiliation, report in to receive an assignment.

Burning technique in which lines of fire are started simultaneously from the apex of a ridge point, and progress downhill, maintaining position along the contour; used in hilly areas to ignite ridge points or ridge ends.

The ICS title for individuals responsible for the management of functional sections: Operations, Planning, Logistics, and Finance/Administration.

The chief of party is responsible to the sending unit dispatcher until destination is reached. Chief of party is responsible for all traveling personnel assigned on the manifest list.

Testimony or information not based on actual personal knowledge or observation, but dependent on inference of other facts or experience. For example, testimony that defendant's cigarette lighter was found in ashes of a fire.

A form of high cloud, composed of ice crystals, which seldom obscures the sun.

A written demand for a specific amount of money or other objects of value, other than ordinary obligations incurred for services, supplies, or things.

An individual, partnership, association, corporation, country, the federal government, state, or other political subdivision asserting a right, demand, or claim against another entity.

First Tier, parent grouping to sort and filter actions planned and implemented to address threats mitigated by the wildland fire management program.

Foam intended for use on Class A or woody fuels; made from hydrocarbon-based surfactant, therefore lacking the strong filming properties of Class B foam, but possessing excellent wetting properties.

Foam designed for use on Class B or flammable liquid fires; made from fluorocarbon-based surfactants, therefore capable of strong filming action, but incapable of efficient wetting of Class A fuels.

Geographic areas designed by the Clean Air Act subject to the most stringent restrictions on allowable increment of air quality deterioration. Class I areas include Forest Service wildernesses and nation memorial parks over 5,000 acres, National Parks exceeding 6,000 acres, international parks, as well as other designated lands. 

All areas of the country not designated Class I, including everything from non-Class I areas to urban areas. A greater amount of air pollution can be added to these areas than Class I.

An event dealing with a scheduled activity in a classroom setting or other controlled environment that provides instruction so as to make attendees fit or qualified for incident support activities.

A federal law enacted to ensure that air quality standards are attained and maintained. Initially passed by Congress in 1963, it has been amended several times.

Communication that does not use codes.

The prevalent or characteristic meteorological conditions of any place or region, and their extremes.

In NFDRS, one of four classifications of general climate of an area.

Points on the cumulative distribution of one fire weather/fire danger index without regard to associated fire occurrence/business.

Means of establishing a flight path to a target on a fire by referring to clock directions from the aircraft's present location, with the nose of the aircraft pointing at 12:00.