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Fire Department Incident Safety Officer Exam
2025/2026 | 3rd Edition Study Guide with 250+
Questions & Answers
4 - 8 Oz every 15 to 20 minutes of exertion ......ANSWER........At
a minimum, how much water should working firefighters drink at
an incident?
Accident Chain ......ANSWER........A series of conditions and events
that lead to an unsafe situations that results in injury and/or
property damage.
Acquired training and education
The person's physical and mental health
The person's general and current attitude. ......ANSWER........Three
Factors that contribute to an individual's ability to act safely
Action Model ......ANSWER........A template that outlines a mental
or physical process that considers inputs that led to an output or
outcomes.
Acute Stress disorder (ASD) ......ANSWER........The behavioral
issues that arise in the days following an atypical stress event.
Arbitrarily Aggressive ......ANSWER........Action approach to get
results exposes oneself to danger that they may not appreciate
or acknowledge
Assistant Safety Officer - Hazmat (ASO-HM) ......ANSWER........A
person who meets or exceeds the NFPA 472 requirements for a
hazardous materials technician and is trained in the
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responsibilities of the ISO position as it relates to hazmat
response.
Assistant Safety Officer - Rescue Technician ......ANSWER........A
person who meets or exceeds rescue technician-level
competencies
Assistant Safety Officer (ASO) ......ANSWER........A member of the
fire department appointed by the incident commander to as/sist
the ISO in the performance of the ISO functions at an incident
scene
Atypical Stressful Event (ASE) ......ANSWER........Am incident that
presents mental or emotional pressure or strain circumstances that
are outside the ordinary experiences of the responders.
Atypically Stressful Incident ......ANSWER........An incident that
involves an unusually gruesome situation, serious firefighter injury,
firefighter death, or other potential psychological stress.
Awareness
Accommodation
Acclimation ......ANSWER........What are the three A's to mitigate
ergonomic stressors?
Axial Load ......ANSWER........A load that is imposed through the
centroid of another object
Axially
Eccentrically
Torsionally ......ANSWER........What are the three ways that loads
can be imposed on materials?
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Balloon Framing ......ANSWER........A construction method in which
continuous wood studs run from the foundation to the roof, and
floors are placed on a shelf - called ribbon board - that hangs
on the interior surface of the studs
Basic/surface collapse ......ANSWER........A collapse in which
victims are easily accessible and trapped by surface debris.
Beam ......ANSWER........A structural element that transfers load
perpendicularly to the imposed load
Being Visible
Setting an Example ......ANSWER........List two passive triggers
that an ISO can employ to achieve safe behaviors.
Black Fire ......ANSWER........A slang term for smoke that is high-
volume, has turbulent velocity, is ultra-dense, and is deep black;
a sig of impending autoignition and flashover.
Blowup
Fire Storm
Flare-up
Torching ......ANSWER........What are the four principal hazards
that are present at most wildfires?
Blowup ......ANSWER........A wildland fire term used to describe
the sudden advancement and increase in fire intensity due to
wind, prewarmed fuels, or a topographical feature such as a
narrow canyon or "chimney"
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Boiling Liquid Expanding Vapor Explosion
......ANSWER........BLEVE
Building Geometry ......ANSWER........The constellation of elements
that must be taken into consideration at a structure fire, including
issues associated with the building's layout, size, number of floors,
access options, and other features.
Bunker Cop
CYA Mode
Worker ......ANSWER........List the three ISO traps
Cantilever beam ......ANSWER........A beam supported at only one
end or a beam that extends well past a support in such a way
that the unsupported overhang places the top of the beam in
tension and the bottom in compression
Case Law ......ANSWER........A precedent established over time
through the judicial process
Circadian Rhythm ......ANSWER........A person's physiological
response to the 24-hour clock, which includes sleep, energy
peaks, and necessary body functions.
Classify the building construction
Determine structural involvement
Visualize and trace loads
Evaluate time
Predict and communicate ......ANSWER........Name the five steps to
predicting a building's collapse potential
Classroom Training
Fire Department Incident Safety Officer Exam
2025/2026 | 3rd Edition Study Guide with 250+
Questions & Answers
4 - 8 Oz every 15 to 20 minutes of exertion ......ANSWER........At
a minimum, how much water should working firefighters drink at
an incident?
Accident Chain ......ANSWER........A series of conditions and events
that lead to an unsafe situations that results in injury and/or
property damage.
Acquired training and education
The person's physical and mental health
The person's general and current attitude. ......ANSWER........Three
Factors that contribute to an individual's ability to act safely
Action Model ......ANSWER........A template that outlines a mental
or physical process that considers inputs that led to an output or
outcomes.
Acute Stress disorder (ASD) ......ANSWER........The behavioral
issues that arise in the days following an atypical stress event.
Arbitrarily Aggressive ......ANSWER........Action approach to get
results exposes oneself to danger that they may not appreciate
or acknowledge
Assistant Safety Officer - Hazmat (ASO-HM) ......ANSWER........A
person who meets or exceeds the NFPA 472 requirements for a
hazardous materials technician and is trained in the
,Page 2 of 51
responsibilities of the ISO position as it relates to hazmat
response.
Assistant Safety Officer - Rescue Technician ......ANSWER........A
person who meets or exceeds rescue technician-level
competencies
Assistant Safety Officer (ASO) ......ANSWER........A member of the
fire department appointed by the incident commander to as/sist
the ISO in the performance of the ISO functions at an incident
scene
Atypical Stressful Event (ASE) ......ANSWER........Am incident that
presents mental or emotional pressure or strain circumstances that
are outside the ordinary experiences of the responders.
Atypically Stressful Incident ......ANSWER........An incident that
involves an unusually gruesome situation, serious firefighter injury,
firefighter death, or other potential psychological stress.
Awareness
Accommodation
Acclimation ......ANSWER........What are the three A's to mitigate
ergonomic stressors?
Axial Load ......ANSWER........A load that is imposed through the
centroid of another object
Axially
Eccentrically
Torsionally ......ANSWER........What are the three ways that loads
can be imposed on materials?
,Page 3 of 51
Balloon Framing ......ANSWER........A construction method in which
continuous wood studs run from the foundation to the roof, and
floors are placed on a shelf - called ribbon board - that hangs
on the interior surface of the studs
Basic/surface collapse ......ANSWER........A collapse in which
victims are easily accessible and trapped by surface debris.
Beam ......ANSWER........A structural element that transfers load
perpendicularly to the imposed load
Being Visible
Setting an Example ......ANSWER........List two passive triggers
that an ISO can employ to achieve safe behaviors.
Black Fire ......ANSWER........A slang term for smoke that is high-
volume, has turbulent velocity, is ultra-dense, and is deep black;
a sig of impending autoignition and flashover.
Blowup
Fire Storm
Flare-up
Torching ......ANSWER........What are the four principal hazards
that are present at most wildfires?
Blowup ......ANSWER........A wildland fire term used to describe
the sudden advancement and increase in fire intensity due to
wind, prewarmed fuels, or a topographical feature such as a
narrow canyon or "chimney"
, Page 4 of 51
Boiling Liquid Expanding Vapor Explosion
......ANSWER........BLEVE
Building Geometry ......ANSWER........The constellation of elements
that must be taken into consideration at a structure fire, including
issues associated with the building's layout, size, number of floors,
access options, and other features.
Bunker Cop
CYA Mode
Worker ......ANSWER........List the three ISO traps
Cantilever beam ......ANSWER........A beam supported at only one
end or a beam that extends well past a support in such a way
that the unsupported overhang places the top of the beam in
tension and the bottom in compression
Case Law ......ANSWER........A precedent established over time
through the judicial process
Circadian Rhythm ......ANSWER........A person's physiological
response to the 24-hour clock, which includes sleep, energy
peaks, and necessary body functions.
Classify the building construction
Determine structural involvement
Visualize and trace loads
Evaluate time
Predict and communicate ......ANSWER........Name the five steps to
predicting a building's collapse potential
Classroom Training
