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Understanding the Glossary Process

Why Does NWCG Need to Develop Glossary Terms?
The Glossary of Wildland Fire Terminology provides an extensive listing of terms and definitions used by the National Wildfire Coordinating Group (NWCG) community. This document 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 members and users.

This glossary helps to improve communication and provide consistency in terminology usage throughout those organizations with a mission of wildland fire management. It will also facilitate consistent use of glossary terms in publications, course development, and incident management activities.

NWCG has directed that all publication glossaries will be based upon the Glossary of Wildland Fire Terminology for the purpose of maintaining definition consistency and clarity among documents.

A glossary entry includes a term with one or more definitions.

How are Terms Developed and Maintained within NWCG?
NWCG develops and maintains a robust library of wildland fire data specific glossary terms that enable the common usage of terminology across wildland fire information systems. The glossary publication is updated annually which allows committees and organizations time to incorporate changes. A NWCG Committee is assigned as a “Glossary Stewardship Group” to develop or revise a glossary term. The Glossary Stewardship Group acts as the subject matter experts to ensure accuracy of definitions and consistency across agencies.

Reference Definitions

Some of the terms within this glossary will be followed by initials or will have references or comments at the end of the definition to help broaden the recognition and understanding of the term. An explanation of those references is as follows:

Also called:

Means there is another term that may sometimes be in use, but is not defined in this glossary.

Acronym:

A name made up of the initial letters of a multi-word term or official title. An acronym appears in parentheses following the term.

See:

Means there is another, preferred term that should be used instead. In such a case only the preferred term is defined in this glossary.

See Also:

Means there are one or more related terms that may also be of interest to the glossary user. The related terms are also defined in this glossary.

Synonym:

Means the term is synonymous with another. The terms have the same, or essentially the same, definition and the terms are interchangeable in their use.

Copyright and Trademark Information

This glossary is compiled and maintained under the stewardship of the NWCG Data Standards and Terminology Subcommittee (DSTS). NWCG has approved this information for the guidance of its subgroups and member agencies and is not responsible for the interpretation or use of this information by anyone otherwise.

This NWCG information is in the public domain. Use of the information, including copying, is permitted. Use of NWCG information within another document is permitted using accurate and proper citation to avoid plagiarism.

The NWCG logo may not be used except on NWCG authorized information. "National Wildfire Coordinating Group", "NWCG", and the NWCG logo are trademarks of the National Wildfire Coordinating Group.

The use of trade, firm, or corporation names in this publication is for the information and convenience of the reader and does not constitute an endorsement by the National Wildfire Coordinating Group of any product or service to the exclusion of others that may be suitable.

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NWCG Latest Announcements

2026 Updates to the NWCG Standards for Wildland Fire Position Qualifications, PMS 310-1

Date: January 23, 2026
Questions? 
Please contact: Incident and Position Standards Committee

The Incident and Position Standards Committee has updated the NWCG Standards for Wildland Fire Position Qualifications, PMS 310-1.

These updates address changes to incident position names and requirements for qualification, training, and experience. Updates related to the implementation of Complex Incident Management (CIM) and Incident Performance Training Modernization (IPTM) are also included.

The NWCG Wildland Fire Position Qualification Flowchart, PMS 308 has also been updated to reflect the recent changes.

References:

NWCG Standards for Wildland Fire Position Qualifications, PMS 310-1

NWCG Wildland Fire Position Qualification Flowchart, PMS 308

IPSC Memo 26-01: January 2026 Updates to the NWCG Standards for Wildland Fire Positions Qualifications, PMS 310-1

Incident Business Committee Memo 26-01: Updated Emergency Equipment Shift Ticket, OF 297

Date: January 22, 2026
Questions? 
Please contact: Incident Business Committee

The Incident Business Committee (IBC) has released Memorandum 26-01: OF 297 and 2026 Fire Use. This memo informs the wildland fire community that the updated Emergency Equipment Shift Ticket, OF 297 is available for download and can be ordered through the Great Basin Cache.

Beginning January 15, 2026 the previous version of the OF 297 form has been discontinued.

For further details, please contact your IBC representative.

References:

Incident Business Committee Memorandum 26-01

Great Basin Cache

NEW! S-390, Introduction to Wildland Fire Behavior Calculations (Blended) Available Now

Date: December 22, 2025
Questions about RT-130? 
Please contact: Fire Behavior Subcommittee

NWCG is excited to announce that the new S-390, Introduction to Wildland Fire Behavior Calculations (Blended) training is now available on the Wildland Fire Learning Portal.

This third course in the series combines online and instructor-led training components aimed at individuals who are involved in planning, managing, and executing wildland fire and prescribed burn operations; who require a thorough understanding of fire behavior calculations to enhance effectiveness and safety. This includes students who require the knowledge and skill necessary to perform the duties of a Type 3 Incident Commander (ICT3), Division/Group Supervisor (DIVS), or Prescribed Fire Burn Boss Type 2 (RXB2).

Students are required to be qualified as any Single Resource Boss position and complete the prerequisite S-290, Intermediate Wildland Fire behavior (Blended) course, before enrolling in S-390.

References:

S-390, Introduction to Wildland Fire Behavior Calculations (Blended)

Wildland Fire Learning Portal

NEW! S-320, Introduction to Incident Management Teams (Blended) Available Now

Date: December 18, 2025
Questions about RT-130? 
Please contact: Incident and Position Standards Committee

NWCG is excited to announce that S-320, Introduction to Incident Management Teams (Blended) is now available on the Wildland Fire Learning Portal!

This blended course combines online learning with instructor-led training, designed for individuals seeking to build leadership skills and gain experience in incident management.

Students are required to complete the prerequisite trainings ICS-100, Introduction to Incident Command System (ICS), ICS-200, Basic ICS for Initial Response, and ICS-700, An Introduction to the National Incident Management System (NIMS) prior to attending S-320.

References:

S-320, Introduction to Incident Management Teams (Blended)

Wildland Fire Learning Portal