This chapter discusses safety considerations for incident safety officers (ISOs) at wildland and interface zone fires. It covers wildland fire terminology related to fire growth and behavior. The chapter identifies six situations that may require appointing an assistant safety officer at a wildland fire, including when there are multiple divisions, branches, groups, or task forces operating in different locations or risk situations. ISOs are responsible for identifying actions that could threaten firefighter safety, classifying hazard types, and monitoring ongoing incident conditions. Fire growth factors in wildland and agricultural areas like fuel, weather, and topography are also reviewed.

1. Fire Department Incident Safety
Officer
Third Edition
Chapter 13 — The ISO at Wildland and I-Zone Fires

2. Overview/Introduction
‣ This chapter discusses the wildland fire terminology relevant to
fire growth and behavior, fire growth and blowup factors in
wildland and cultivated vegetation fires, and the six situations that
may require the appointment of an assistant safety officer at the
wildland fire.

3. ‣ Upon successful completion of this lesson, the student shall be able to
‣ Identify actions or operations that will be altered, terminated, or suspended to
protect members’ health safety if identified by the ISO (NFPA 5.2.2, pp 195-
196).
‣ Identify imminent threats to firefighter safety (NFPA 5.2.4, pp 193-194).
‣ Classify types of imminent hazards into major categories (NFPA 5.2.4, pp 192-
193).
‣ Describe the incident scene conditions that are monitored as part of an ongoing
incident (NFPA 5.2.5, pp 193-196).
‣ Define the wildland fire terminology relevant to fire growth and behavior (NFPA
5.3.5, pp 192-193).
‣ Describe fire growth and blowup factors in wildland and cultivated vegetation
fires (NFPA 5.3.5, pp 192-193).
‣ List six situations that may require the appointment of an assistant safety officer
at the wildland fire (p 197).
‣ Define LCES (p 195).
Learning Objectives

4. Section Slides
I. Introduction: Into the Wild 4
II. Wildland Fire Language 5-7
III. Wildland Fire Concepts 8
IV. General ISO Functions at Wildland Fires 9-17
V. Unique Considerations for Wildland Fires 18-22
Chapter Content