G-231, Wildland Training (ENGB) for Structural Firefighters

G-231 Decorative banner. Four photos of wildland fire engine operations. Three firefighters word at the back of a water and hose truck with timber burning in background. A engine crew boss pulls a hose as he walks away from a fire engine. A firefighter walks on gravel road beside a fire engine as flames burn in brush behind him. A fire engine drives down a dusty road in forest.

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Course Materials

These materials are for instructor-led delivery. 

Unit/TopicLearning ObjectiveMaterials
G-231 Unit 1: S-290 Intermediate Wildland Fire Behavior

At the completion of this course structural fire officers will:

  1. Describe the characteristics of fuel, weather, and topography that influence wildland fire behavior.
  2. Describe the effect that fuels, weather, and topography have on wildland fire behavior, fireline tactics, and safety.
  3. Describe the causes of extreme fire behavior (long-range spotting, crowning, and fire whirls) that develop relative to fuels, weather, and/or topography.

Note: In addition to presenting the information in the Course Introduction, instructors should explain where the G-231 course fits in the Gap course curriculum and the NWCG credentialing system.

S-290 Units 1-12, Nov 2007 version, (32 hrs)

G-231 Unit 2: Mobilization
  1. Identify the readiness and special equipment items that are required for the Crew Boss.
  2. List eight pieces of information to request from dispatch prior to departure.
  3. Identify five key elements of information needed to complete a Passenger/Cargo manifest.
  4. Explain the importance of evaluating crew readiness and establishing crew organization.
  5. Provide examples of appropriate travel procedures and conduct.

S-230 Unit 2, Nov 2004 version, (1 hr)

G-231 Unit 3: Fireline Operations: Entrapment Avoidance
  1. Describe the role LCES has in the risk management process.
  2. Describe a protocol for negotiating a perceived unsafe assignment.
  3. Given a set of fireline conditions, identify valid trigger point(s).
  4. Define levels of engagement.
  5. Describe a procedure for recognizing escape routes and safety zones when engaging a fire.
  6. Given a set fireline condition, estimate minimum safety zone size using the Missoula Fire Lab model.
  7. Identify human factors that contribute to fireline decision errors.
  8. Given a fire scenario, determine the appropriate level of engagement as conditions change.

S-131 Unit 1, Oct 2016 version, (1 hr)​

G-231 Unit 4: Fireline Operations: Safety and Tactics
  1. Demonstrate the proper use of LCES in the fire environment in relation to the Crew Boss role.
  2. Organize, plan, and describe the actions that are required when a crew is deployed for fireline suppression activities.
  3. Given an Incident Response Pocket Guide, safely complete a simulated fireline assignment.
  4. Describe safety precautions that should be addressed by the Crew Boss in downhill and indirect fireline construction.
  5. Describe applicable methods to employ in fireline construction that will facilitate rehabilitation.
  6. List the items to check when inspecting a completed fireline.
  7. List crew procedures used in staging areas.
  8. Describe Crew Boss responsibilities for accidents, injuries, and near misses.
  9. Identify supply needs and explain the process for re-supplying a crew while on the fireline.
  10. Complete an After Action Review (AAR).

S-230 Unit 4C, Nov 2004 version, (4 hrs)

G-231 Unit 5: Demob
  1. Describe procedures for re-supply of fire-expended items.
  2. List the steps necessary for the demobilization of a crew from an incident.
  3. List the key responsibilities of a Crew Boss prior to disassembly of crew at the initial mobilization point.

S-230 Unit 6, Nov 2004 version, (1 hr)​

G-231 Final Exam


S-230 Final Exam, Nov 2004 version

S-290 Final Exam, Nov 2007 version


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