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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


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2025 Week of Remembrance

Date: June 27, 2025
Questions?  Please contact:
6 Minutes for Safety Subcommittee

As we approach the 2025 Week of Remembrance (WOR), June 30–July 6, we dedicate this time to reflect on the past incidents from 2015 and honor the fallen through learning. Since its inception in 2014, WOR has honored wildland firefighters who made the ultimate sacrifice while encouraging critical discussions that reinforce lessons learned.

Throughout the week, we encourage thoughtful and generative conversations—whether in briefing rooms or at tailgates—that promote a culture of continuous learning and safety.

References:

2025 Week of Remembrance: Letter to Leadership

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ETC Equipment Bulletin: 25-003 Flame-Resistant Shirt Survey

Date: June 12, 2025
Questions?  Please contact:
Equipment Technology Committee

The U.S. Forest Service National Technology and Development Program (NTDP) is seeking input on the Forest Service-designed flame-resistant (FR) shirt, currently available through the National Interagency Support Cache system and FedMall.

NTDP is conducting a product review to improve future FR shirt designs. As part of this effort, a short survey is now open for federal employees who have worn any of three recent FR shirt models. Feedback will guide design improvements to better meet the needs of wildland firefighters.

To comply with the Paperwork Reduction Act, responses are limited to federal employees. The survey is open through September 12, 2025. 

References:

NWCG Alerts

ETC Equipment Bulletin: 25-003

NEW! S-130, Firefighter Training (Blended) Now Available

Date: June 10, 2025
If you have questions, please visit our FAQ page. 
If your question is not answered there, you can 
submit your question using our Contact Us form. 
 

The S-130, Firefighter Training (Blended), equips new wildland firefighters with essential skills through a mix of online learning and hands-on training. The course features a required online component and an instructor-led exercise, reinforcing online concepts with practical performance-based training.

The course builds competencies in wildland fire operations, safety, and equipment use, applicable across various operational environments. Both the online component and instructor-led field exercise must be completed to receive a certificate of completion. Students are required to finish the prerequisite S-190, Introduction to Wildland Fire Behavior, before enrolling in S-130, Firefighter Training (Blended).

References:

S-130, Firefighter Training (Blended)

S-190, Introduction to Wildland Fire Behavior

Wildland Fire Learning Portal

EMC Memo 25-001: Interim Rapid Extraction Module (REMS) Training and Qualification Requirements

Date: June 3, 2025
Questions?  Please contact:
Emergency Medical Committee

The Emergency Medical Committee has issued interim guidance for Rapid Extraction Module Support (REMS) teams. Until further notice, Type I and II REMS teams must designate a team leader qualified at Firefighter Type 1 Squad Boss (FFT1) or higher. This temporary change replaces the Single Resource Boss (SRB) requirement, which is currently not feasible due to administrative barriers.

This memorandum does not include any other changes to the NWCG Standards for Rapid Extraction Module Support, PMS 552. This interim change takes effect immediately and will remain in place until further notice.

References:

EMC Memo 25-001: Interim Rapid Extraction Module (REMS) Training and Qualification Requirements

NWCG Standards for Rapid Extraction Module Support, PMS 552