S-190 Introduction to Wildland Fire Behavior, 2008

S-190 Decorative banner. Group of photos depicting wildland firefighters performing various duties.

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This course provides instruction in the primary factors affecting the start and spread of wildfire and recognition of potentially hazardous situations. S-190 is typically taught in conjunction with or prior to Basic Firefighter Training, S-130. It is designed to meet the fire behavior training needs of a Firefighter Type 2 (FFT2) on an incident as outlined in the NIMS: Wildland Fire Qualification System Guide, PMS 310-1, and the position taskbook developed for the position.


  • Identify and discuss the three sides of the fire triangle.
  • Identify the environmental factors of fuels, weather and topography that affect the start and spread of wildland fire.
  • Describe the contributing factors that indicate the potential for increased fire behavior that may compromise safety.

Target Group

Entry-level firefighters

This Course is required for Firefighter Type 2 (FFT2), Initial Attack Dispatcher (IADP), Public Information Officer (PIOF), and Staging Area Manager (STAM).

NOTE:  Be sure to check agency-specific guidelines; some agencies may have different requirements.


S-190 is available as either online training or classroom instructor-led training

Online Course Components and Hours to Complete

The online course materials are divided into three online modules (1 to 3 hours each). There is a challenge review at the end of each module. If you successfully complete the challenge review, you will be able to print a module certificate of completion.

Pre-course workN/A
Pre-selection assessmentN/A
Online training6-8
Instructor-led trainingN/A
Total Hours6-8


Instructor-led Course Components and Hours to Complete

Pre-course workN/A
Pre-selection assessmentN/A
Online trainingN/A
Instructor-led training6-8
Total Hours6-8

Session Offerings

Nationally advertised course sessions can be found by searching for s-190 on the National Wildland Fire Training website. Contact your local Training Officer for more information about local course sessions.  The online version of the course is available upon demand.

Prerequisite Qualifications and Training


Course Level


Associated Position Task Books

Initial Attack Dispatcher (PMS 311-60), Public Information Officer (PMS 311-07), and Staging Area Manager (PMS 311-16).


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