Skip to main content

Mixmaster

MXMS decorative banner: photos depicting MXMS position.

The Mix Master provides oversight and support of the Wildland Fire Chemicals (WFC) mixing and loading operations. The MXMS reports to the Airtanker Base Manager (ATBM), Single Engine Airtanker Manager (SEMG), or Dip Site Manager. The MXMS works in the Air Operations functional area.

USWDS Paragraphs

Operations Section Chief (OPS3) Operations Branch Director (OPBD) Structure Protection Specialist (STPS) Division/Group Supervisor (DIVS) Task Force Leader (TFLD) Crew Boss, Single Resource (CRWB) Heavy Equipment Boss, Single Resource (HEQB) Engine Boss, Single Resource (ENGB) Felling Boss, Single Resource (FELB) Firing Boss, Single Resource (FIRB) Helicopter Manager, Single Resource (HMGB) Operations Section Chief (OSC2) Staging Area Manager (STAM) Air Operations Branch Director (AOBD) Air Support Group Supervisor (ASGS) Helibase Manager (HEBM) Deck Coordinator (DECK) Aircraft Base Radio Operator (ABRO) Helicopter Crew Member (HECM) Air Tactical Group Supervisor (ATGS) Helicopter Coordinator (HLCO) Firefighter Type 1 (FFT1) Firefighter Type 2 (FFT2) Strike Team Leader Crew (STCR) Strike Team Leader Heavy Equipment (STEQ) Strike Team Leader Engine (STEN) Operations Section Chief (OSC1) Advanced Faller (FAL1) Intermediate Faller (FAL2) Basic Faller (FAL3) Fixed Wing Base Manager (FWBM) Airtanker Base Manager (ATBM) Fixed Wing Parking Tender (FWPT) Mixmaster (MXMS) Retardant Crew Member (RTCM) Single Engine Air Tanker Manager (SEMG) Aircraft Time Keeper (ATIM) Ramp Manager (RAMP) Operations Section Chief (OSCC) Crew Representative (CREP)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The Forest Service and Department of Interior are enabled by Administratively Determined Pay Plans (AD Pay Plans) to hire persons for temporary duration for the following reasons:

  1. To cope with a sudden and unexpected emergency caused by a fire, or extreme fire potential, flood, storm, or any other all-hazard emergency that threatens damage to federally protected property, has the potential to cause loss of life, serious injury, public health risk, or damage to natural or cultural resources unless brought under immediate control.
  2. To provide emergency assistance to States under formalized agreements.
  3. To meet mission assignments issued by the Federal Emergency Management Agency (FEMA).

The National Wildfire Coordinating Group (NWCG) Incident Business Committee (IBC) reviews positions annually and establishes pay rate classifications for each position.

For more information on the AD Pay Plans, visit Incident Business Committee.

Date: Jul 2020

Added: Incident Position Description (IPD) approved.

Date: Oct 2019

Updated: Required Experience item completion and certification of Position Task Book (311-94)  as a Mixmaster​ (MXMS).

Date: Nov 2018

Added: Position added back to PMS 310-1.

Date: Oct 1993

Removed: Position removed from PMS 310-1.

Date: Oct 1984

Position created.

USWDS Paragraph Bundles

Primary Committee: National Interagency Aviation Committee
Steward: Airtanker Base Operations Unit


Last Modified / Reviewed:

Please Provide Feedback

NWCG values your constructive input and we thank you for taking the time to provide feedback.

Although contact information is optional, we hope that you provide a way for us to contact you in case we need clarification on your comment. If you would like to be contacted regarding your feedback, you must provide contact information. 

Would you like a response?
If you would like a response, you must provide contact information (name and email) below.
One file only.
9.28 GB limit.
Allowed types: gif, jpg, jpeg, png, bmp, eps, tif, pict, psd, txt, rtf, html, odf, pdf, doc, docx, ppt, pptx, xls, xlsx, xml, avi, mov, mp3, mp4, ogg, wav, bz2, dmg, gz, jar, rar, sit, svg, tar, zip.

NWCG Latest Announcements

Updated NWCG Guide for Wildland Fire Modules, PMS 431

Date: May 14, 2025
Questions?  Please contact:
Fire Use Subcommittee

The updated NWCG Guide for Wildland Fire Modules, PMS 431 serves as a supplemental resource for wildland fire module operations, providing information frequently used in the field.

PMS 431 defines the organizational structure, staffing, and qualifications for Type 1 and Type 2 Wildland Fire Modules, outlining their roles in wildland fire suppression, prescribed fire, and resource management. The NWCG Guide for Wildland Fire Modules, PMS 431, should be used in conjunction with the NWCG Standards for Wildland Fire Module Operations, PMS 430.

References:

NWCG Guide for Wildland Fire Modules, PMS 431

NWCG Standards for Wildland Fire Module Operations, PMS 430

Updated NWCG Standards for Wildland Fire Resource Typing, PMS 200 Now Includes Off-Highway Vehicle Typing Standards

Date: May 13, 2025
Questions?  Please contact:
Mobile Fire Equipment Subcommittee 

The NWCG Standards for Wildland Fire Resource Typing, PMS 200 has been updated to include newly developed Off-Highway Vehicle (OHV) typing standards. These standards organize OHV information into logical categories and outline key safety requirements for occupants.

NWCG Standards for Wildland Fire Resource Typing, PMS 200 establishes minimum typing standards for aircraft, crews, and equipment used in national mobilization to wildland fire incidents. Typing designations are assigned based on measurable capability and performance criteria.

References:

NWCG Standards for Wildland Fire Resource Typing, PMS 200

NEW! S-204, Interpersonal and Critical Thinking Skills for Safety Officers Now Available

Date: May 12, 2025
Questions?  Please contact:
Risk Management Committee

The S-204, Interpersonal and Critical Thinking Skills for Safety Officers self-directed online course is now available! Developed through the Incident Performance and Training Modernization (IPTM) effort, this training supports individuals working towards Safety Officer, Field (SOFF) incident qualifications.

S-204, Interpersonal and Critical Thinking Skills for Safety Officers focuses on facilitating hazard mitigation conversations and building trust to influence safety-related decisions. Individuals can self-enroll through the Wildland Fire Learning Portal (WFLP).

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:

S-204, Interpersonal and Critical Thinking Skills for Safety Officers 

NWCG Safety Officer, Field (SOFF) Position Page

Wildland Fire Learning Portal

Great Basin Cache Upgrading to New Inventory System

Date: May 7, 2025
Questions?  Please contact:
Great Basin Cache
Phone: (208) 387-5104
Fax: (208) 387-5573

The Great Basin Cache (GBK) is transitioning to a new inventory system to better serve the wildland fire community. During this upgrade, GBK will be unable to process standard orders from Part 1: Fire Supplies and Equipment and Part 2: Publications between May 8-20, 2025, with exceptions made for emergency fire orders. Orders will be accepted through close of business May 7.

To browse the latest available items, please refer to the National Fire Equipment System (NFES) catalogs. 

References:

NWCG NFES Catalog-Part 1: Fire Supplies and Equipment, PMS 449-1

NWCG NFES Catalog-Part 2: Publications, PMS 449-2