Fire Department Incident Safety Officer, 3rd Edition Questions
and Answers |Fall 2025
Question 1
on deck system
Correct Answer
an organized system in which a working team is replaced with another working team that is already dialed in and ready
to replace them. once replaced, the rotated workers go to rehab, while a crew from rehab rotates into the vacated on
deck position
Question 2
ISO should consider a request for ASO's when
Correct Answer
fires in large, unusual, or hazardous buildings, when a Plans Section is established, when an ISO is needed within an IDLH
environment, when a MAYDAY is declared
Question 3
Regulation
Correct Answer
A rule, issued by an executive government authority, that outlines details and procedures that have the force of law.
Page 1 of 45
,Question 4
ISOs responsibilities I-
Correct Answer
Intervening when an immediate or potential threat exists
Question 5
National Incident Management System (NIMS)
Correct Answer
An incident response system developed by the Department of Homeland Security.
Question 6
shadowing
Correct Answer
a training approach in which a trainee closely observes experienced mentors performing their assigned duties
Question 7
fire control team
Correct Answer
a minimum of two qualified firefighters used as an ignition officer and a ready observer in full PPE used as an ignition
officer and a ready observer in full PPE to rescue the ignition officer should something go wrong at live fire trainings
Page 2 of 45
,Question 8
Statutory law
Correct Answer
A rule of conduct in civil and criminal matters
Question 9
live load
Correct Answer
any force or weight, other than the building itself, that a building must carry or absorb
Question 10
truss
Correct Answer
a series of triangles used to form an open web structural element to act as a beam
Question 11
NFPA 1026
Correct Answer
ISO qualifications for NIMS safety officers
Page 3 of 45
, Question 12
lintel
Correct Answer
a beam that spans an opening in a load bearing masonry wall, such as over a garage door opening (often called a
header)
Question 13
turbulent smoke filling a box
Correct Answer
warning sign of impending flashover
Question 14
imminent threat
Correct Answer
an act or condition that is judged to present a danger to persons or property that is so urgent and severe that it requires
immediate corrective or preventive action
Page 4 of 45
and Answers |Fall 2025
Question 1
on deck system
Correct Answer
an organized system in which a working team is replaced with another working team that is already dialed in and ready
to replace them. once replaced, the rotated workers go to rehab, while a crew from rehab rotates into the vacated on
deck position
Question 2
ISO should consider a request for ASO's when
Correct Answer
fires in large, unusual, or hazardous buildings, when a Plans Section is established, when an ISO is needed within an IDLH
environment, when a MAYDAY is declared
Question 3
Regulation
Correct Answer
A rule, issued by an executive government authority, that outlines details and procedures that have the force of law.
Page 1 of 45
,Question 4
ISOs responsibilities I-
Correct Answer
Intervening when an immediate or potential threat exists
Question 5
National Incident Management System (NIMS)
Correct Answer
An incident response system developed by the Department of Homeland Security.
Question 6
shadowing
Correct Answer
a training approach in which a trainee closely observes experienced mentors performing their assigned duties
Question 7
fire control team
Correct Answer
a minimum of two qualified firefighters used as an ignition officer and a ready observer in full PPE used as an ignition
officer and a ready observer in full PPE to rescue the ignition officer should something go wrong at live fire trainings
Page 2 of 45
,Question 8
Statutory law
Correct Answer
A rule of conduct in civil and criminal matters
Question 9
live load
Correct Answer
any force or weight, other than the building itself, that a building must carry or absorb
Question 10
truss
Correct Answer
a series of triangles used to form an open web structural element to act as a beam
Question 11
NFPA 1026
Correct Answer
ISO qualifications for NIMS safety officers
Page 3 of 45
, Question 12
lintel
Correct Answer
a beam that spans an opening in a load bearing masonry wall, such as over a garage door opening (often called a
header)
Question 13
turbulent smoke filling a box
Correct Answer
warning sign of impending flashover
Question 14
imminent threat
Correct Answer
an act or condition that is judged to present a danger to persons or property that is so urgent and severe that it requires
immediate corrective or preventive action
Page 4 of 45
