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NWCG Glossary of Wildland Fire, PMS 205

Overview

The NWCG Glossary of Wildland Fire provides an extensive listing of approved terms and definitions used by the NWCG community. It contains terms commonly used by NWCG in the areas of wildland fire and incident management and is not intended to list all terms used by NWCG groups and member agencies. The NWCG has directed that all committee and subgroup product glossaries be contained within the NWCG Glossary of Wildland Fire to maintain definition consistency and clarity among documents.

Comments, questions, and recommendations shall be submitted to the appropriate agency program manager assigned to the Data Standards and Terminology Board (DSTB). 

NWCG Glossary of Wildland Fire, PMS 205  (Quick View)

EDG Explorer is a database platform used for managing NWCG Glossary terms.  The following table is a quick view of the terms found in EDG. More detailed information such as rules, documentation, and term relationships may be viewed in EDG Explorer.  

Note: If the NWCG Glossary of Wildland Fire is not displaying below please report it to NWCG Webmaster

Title Steward Status Definition
advection FWS Fire Weather Subcommittee Approved

According to the American Meteorological Society, the process of transport of an atmospheric property solely by the mass motion of the atmosphere; also the rate of change of the value of the advected property at a given point.

Advisory RMC Risk Management Committee Approved

A time-sensitive alert from an NWCG Committee to the wildland fire community regarding procedural changes, equipment information and/or use updates, potential safety hazards, etc. Yellow hash-marked bordered stationary will be associated with this type of alert.

Adze Hoe ETC Equipment Technology Committee Approved

A fire-trenching or digging tool having a sharp, tempered blade, which is useful for heavy grubbing, trenching, and light cutting.

aerial detection IASS Interagency Aerial Supervision Subcommittee Approved

A system for, or the act of discovering, locating, and reporting fires from aircraft.

aerial fireworks CEPC Communication, Education, and Prevention Committee In Development

Explode or create an aerial flash. The hot remains of an aerial firework may land in flammable vegetation and ignite a fire.
 
 

aerial fuels FUSC Fire Use Subcommittee Approved

Standing and supported live and dead combustibles not in direct contact with the ground and consisting mainly of foliage, twigs, branches, stems, cones, bark, and vines.

aerial ignition IOSC Incident Operations Subcommittee, NIAC National Interagency Aviation Committee Approved

Ignition of fuels by dropping incendiary devices or materials from aircraft.

Aerial Ignition Device (AID) ETC Equipment Technology Committee, NIAC National Interagency Aviation Committee Approved

Inclusive term applied to equipment designed to ignite wildland fuels from an aircraft.

aerial reconnaissance IASS Interagency Aerial Supervision Subcommittee Approved

Use of aircraft for detecting and observing fire behavior, values-at-risk, suppression activity, and other critical factors to facilitate command decisions on strategy and tactics needed for fire suppression.

aerial torch IHOPS Interagency Helicopter Operations Subcommittee Approved

An ignition device suspended under a helicopter, capable of dispensing ignited fuel to the ground for assistance in burning out or backfiring.

affidavit CEPC Communication, Education, and Prevention Committee Approved

A statement of declaration in writing and affirmed before an official with authority to administer an oath; a statement of declaration alleging fact to support the issuance of a search or arrest warrant.

After Action Review (AAR) RMC Risk Management Committee Approved

A structured review or de-brief process of an event, focused on performance standards, that enables participants to discover for themselves what happened, why it happened, and how to sustain strengths and improve on weaknesses. After action reviews, informal or formal, follow the same general format, involve the exchange of ideas and observations, and focus on improving performance.

age category CEPC Communication, Education, and Prevention Committee In Development

Categories for individuals based on their age group to tailor fire safety messages, eduction and prevention efforts effectively. The aim is to identify how different age groups may be involved in wildfire ignition activities, either directly or indirectly, and to address their specific needs or behaviors.
 
A way to group people based on their chronological age and their position in the life cycle as it relates to the age demographic. This information provides valuable insight to Communication, Education, and Prevention personnel in developing products to reach and educate on wildland fire prevention.

agency NIMSIC National Incident Management System Integration Committee Archived

An administrative division of a government with a specific function, or a non-governmental organization (e.g., private contractor, business, etc.) that offers a particular kind of assistance. A federal, Tribal, state or local agency that has direct fire management or land management responsibilities or that has programs and activities that support fire management activities.

Agency

Above Region in hierarchy, Relates to Department

agency administrator NIMSIC National Incident Management System Integration Committee Approved

The official position responsible for the management of a geographic unit or functional area. The managing officer of an agency, division thereof, or jurisdiction having statutory responsibility for incident mitigation and management. Examples: Federal Line Officer, State Forest Officer/Delegate or Fire Manager, Tribal Chairperson, Fire Chief, Police Chief, Sheriff, Mayor or County Representative.

Agency Approval Date

Day/Month/Year officially accepted by the agency program manager as meeting all agency requirements to receive funds in the planned year.

agency certification IPSC Incident and Position Standards Committee Approved

The process whereby the employing agency or contractor documents that the individual is fully qualified to perform duties and responsibilities for a specified position.

agency dispatch NCSC National Coordination System Committee, IBC Incident Business Committee Approved

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

agency dispatcher NCSC National Coordination System Committee, IBC Incident Business Committee Approved

A person working within an agency organization who processes resources to and from incidents.

agency pilot NIAC National Interagency Aviation Committee Approved

A federal employee pilot or pilot contracted by a federal agency to fly agency, contracted or leased aircraft. This does not include pilots employed by an aircraft vendor as part of an aircraft services contract, such as airtanker contracts, helicopter contracts or other aircraft contracts.

agency program support (event) NCSC National Coordination System Committee Approved

An event, managed by one of the fire agency's other (non-fire) program areas, for accomplishing activities deemed necessary by agency management. 

agency specific costs IBC Incident Business Committee Approved

Costs incurred by an agency that address the sole concern of only the agency or are not incurred with mutual benefit. Agency specific costs are not shared.

air accident (event) Approved

An event dealing with an accident or mishap involving aircraft.

air ambulance RMC Risk Management Committee Approved

A rotary wing aircraft configured, staffed and equipped to respond, care for and transport a patient(s) and approved/licensed by a state to do so. An air ambulance is sometimes referred to as a medevac.

air attack NIAC National Interagency Aviation Committee Approved

The deployment of fixed-wing or rotary aircraft on a wildland fire, to drop retardant or extinguishing agents, shuttle and deploy crews and supplies, or perform aerial reconnaissance of the overall fire situation.

air attack base NIAC National Interagency Aviation Committee Approved

Permanent facility at which aircraft are stationed for use in air attack operations.

air cargo NIAC National Interagency Aviation Committee Approved

All items for transport and delivery by aircraft.

air contaminant FUSC Fire Use Subcommittee Approved

An airborne dust, fume, gas, mist, odor, smoke, vapor, soot, pollen, carbon, acid or particulate matter or any combination thereof.

air crew member NIAC National Interagency Aviation Committee In Development

Additional crew member required for accomplishment of the mission such as flight attendant, smokejumper/rappel spotter, cargo loadmaster, helicopter manager, etc. These positions usually do not require any Airman Certificate(s) or a flight physical. Referred to as a Qualified Non-Crew Member in the CFR.

air guard NCSC National Coordination System Committee Approved

A common VHF-FM frequency used by natural resource agency aircraft for emergency radio transmissions.

air mass FWS Fire Weather Subcommittee Approved

According to the American Meteorological Society, a widespread body of air that is approximately homogeneous in its horizontal extent, particularly with reference to temperature and moisture distribution; in addition, the vertical temperature and moisture variations are approximately the same over its horizontal extent.  The properties of the air mass are established while that air was situated over a particular region of the earth's surface.

air pack RMC Risk Management Committee Approved

Portable air (not oxygen) tanks with regulators which allow firefighters to breathe while in toxic smoke conditions. Usually rated for 30 minutes of service. Used primarily on fires involving structures or hazardous materials.

air pollution FUSC Fire Use Subcommittee Approved

The general term referring to the undesirable addition of substances (gases, liquids, or solid particles) to the atmosphere that are foreign to the natural atmosphere or are present in quantities exceeding natural concentrations.

air pollution alert FUSC Fire Use Subcommittee Approved

A statement issued by an Air Quality Regulatory Agency due to high measured concentrations of pollutants. The alert remains in effect until monitoring shows a decrease in pollutant levels. Should conditions worsen, air pollution warnings and emergencies may be issued. At each stage (alert, warning and emergency) additional emission restrictions are put into effect so as to not intensify the situation. Essentially, at the emergency level all industrial activities and auto usage stop. 

air quality FUSC Fire Use Subcommittee Approved

The composition of air with respect to quantities of pollution therein; used most frequently in connection with "standards" of maximum acceptable pollutant concentrations. Used instead of "air pollution" when referring to programs.

air quality model FUSC Fire Use Subcommittee Approved

Mathematical or quantitative representation or simulation of air quality processes; e.g., emission models, receptor models, or air quality dispersion models.

Air Stagnation Advisory (ASA) FWS Fire Weather Subcommittee Approved

A statement issued by a National Weather Service forecast office when atmospheric conditions are stable enough such that the potential exists for air pollutants to accumulate in a given area. The statement is initially issued when conditions are expected to last for at least 36 hours. 

aircraft (specific cause) CEPC Communication, Education, and Prevention Committee In Development

An airplane, helicopter, or other machine capable of flight.

aircraft accident NIAC National Interagency Aviation Committee Approved

An unplanned event that does substantial damage or causes serious injuries when associated with the operation of applicable aircraft. Event occurs between the time engine(s) is (are) started or rotors turning for the purpose of commencing flight, until the aircraft comes to rest with engines and propellers or rotors stopped, the brakes set or wheel chocks in place, and all persons have disembarked. 

aircraft data card NIAC National Interagency Aviation Committee Approved

Card or documentation required to be on board the aircraft which approves use and indicates specific types of use.

aircraft footprint NIAC National Interagency Aviation Committee Approved

That area on the surface of the earth, runway, or ramp that is covered by the tread of the aircraft tire while the aircraft is motionless.

aircraft ground mishap NIAC National Interagency Aviation Committee Approved

An aircraft mishap in which there is no intent to fly. However, the power plants and/or rotors are in operation and damage is incurred requiring replacement or repair of rotors, propellers, wheels, tires, wing tips, flaps, etc., or injury is incurred requiring first-aid or medical attention.

aircraft incident NIAC National Interagency Aviation Committee Approved

An unplanned event that results in damage which is less than serious aircraft incident criteria, or injuries not requiring medical attention.

Aircraft Network (AirNet) NCSC National Coordination System Committee Approved

Applies to radio frequencies primarily used for air operations.

airtanker NIAC National Interagency Aviation Committee Approved

Fixed-wing aircraft certified by FAA as being capable of transport and delivery of fire retardant solutions.

Alert System RMC Risk Management Committee Approved

A method used to distribute various types of general or time-sensitive information from an NWCG committee to the wildland fire community. Information may include bulletins, advisories, or safety warnings, each with an associated color hash-marked bordered stationary.

alidade ETC Equipment Technology Committee Approved

A sighting device used by lookouts to determine the horizontal bearing and sometimes the vertical angle of a fire from a lookout.

all hazard incident NIMSIC National Incident Management System Integration Committee Approved

A threat or an incident, natural or manmade, that warrants action to protect life, property, the environment, and public health or safety, and to minimize disruptions of government, social, or economic activities. It includes natural disasters, cyber incidents, industrial accidents, pandemics, acts of terrorism, sabotage, and destructive criminal activity targeting critical infrastructure. This also includes the effects climate change has on the threats and hazards.

All Hazards Meteorological Response System (AMRS) FWS Fire Weather Subcommittee Approved

A mobile weather data collection and forecasting system consisting of a communications module, weather observing module, and data interigation module. Used by incident meteorologists on an incident.

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NWCG Latest Announcements

NEW! NWCG Standards for Airtanker Operations, PMS 514

Date: March 7, 2025
Contact: National Interagency Aviation Committee

The NWCG Standards for Airtanker Operations, PMS 514 establishes the standards for dispatching, utilizing, and coordinating airtankers on interagency wildland fires. These standards should be used in conjunction with the NWCG Standards for Aerial Supervision (SAS), PMS 505, NWCG Standards for Airtanker Base Operations (SABO), PMS 508, and any applicable agency plans.

References:

NWCG Standards for Airtanker Operations, PMS 514

Incident Position Standards and Next Gen Position Task Books Now Available for Dispatch Incident Positions

Date: March 5, 2025
Contact: National Coordination System Committee

NWCG is excited to announce that Incident Position Standards and Next Generation Position Task Books are now available for all six Dispatch positions:

  • Aircraft Dispatcher
  • Expanded Dispatch Coordinator
  • Expanded Dispatch Recorder
  • Expanded Dispatch Supervisory Dispatcher
  • Expanded Dispatch Support Dispatcher
  • Initial Attack Dispatcher

The Performance Support Packages for these positions, including the Expanded Dispatch Job Aid, J-601 and the Initial Attack and Aircraft Dispatcher Job Aid, J-602, were developed as part of the Incident Performance and Training Modernization (IPTM) effort. These resources support trainees, qualified personnel, and evaluators in their roles.

Any changes to qualification pathways will take effect with the next update of the NWCG Standards for Wildland Fire Position Qualifications, PMS 310-1.

References:

NWCG Aircraft Dispatcher Position Page 

NWCG Expanded Dispatch Coordinator Position Page 

NWCG Expanded Dispatch Recorder Position Page 

NWCG Expanded Dispatch Supervisory Dispatcher Position Page 

NWCG Expanded Dispatch Support Dispatcher Position Page 

NWCG Initial Attack Dispatcher Position Page 

NWCG Job Aids 

Incident Position Standards and the Next Generation Position Task Books Now Available for DMOB, DOCL, and RESL

Date: February 28, 2025
Contact: Incident Operations Subcommittee

NWCG is excited to announce that Incident Position Standards and the Next Generation Position Task Books are now available for Demobilization Unit Leader (DMOB), Documentation Unit Leader (DOCL), and Resources Unit Leader (RESL).

The Performance Support Packages for these positions, including a job aid for RESL, were developed as part of the Incident Performance and Training Modernization (IPTM) effort. These resources support trainees, qualified personnel, and evaluators in their respective roles.

Any changes to qualification pathways will take effect with the next update of the NWCG Standards for Wildland Fire Position Qualifications, PMS 310-1.

References:

NWCG Demobilization Unit Leader Position Page 

NWCG Documentation Unit Leader Position Page 

NWCG Resources Unit Leader Position Page 

Next Generation Position Task Book and Updated Incident Position Description Now Available for Operations Section Chief Complex

Date: February 27, 2025
Contact: Incident Operations Subcommittee

NWCG is excited to announce that Operations Section Chief Complex (OSCC) has a Next Generation NWCG Position Task Book for Operations Section Chief Complex (OSCC), PMS 311-108 and an updated Incident Position Description.

These resources support trainees, qualified personnel, and evaluators in their respective roles.

References:

NWCG Operations Section Chief Complex Position Page 

NWCG Operations Section Chief Complex Incident Position Description 

NWCG Position Task Book for Operations Section Chief Complex (OSCC), PMS 311-108