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Child firesetters
Firesetters who are typically 2 to 6 years old and are often
curious about fire. They lack the mental capacity to understand
the consequences of their actions.
Circumstantial evidence
Evidence that is based on logical inference rather than personal
observation
Competent Ignition Source
An ignition source that has sufficient energy and is capable of
transferring that energy to the fuel long enough to raise the fuel
to its ignition temperature.
Demonstrative evidence
Any type of tangible evidence relevant to a case, such as
diagrams, photographs, maps, x-rays, visible tests, and
demonstrations
Depth of char
A fire effect that, when evaluated as a pattern on identical fuels,
may be used to determine locations within a structure that were
exposed longest to a heat source.
Destructive analysis investigation
, An investigation that uses the methodical deconstruction of
evidence to determine specific component conditions,
functionality, or failures as they relate to fire investigation.
Direct evidence
Testimony of witnesses who observe acts or detect something
through their five senses or through surveillance equipment such
as CCTV
Documentary evidence
Any type of written record or document that is relevant to the
case
Exigent circumstances rule
A legal condition that allows emergency service providers to
enter, search, seize, and control private property and to
investigate the cause of a fire without consent or warrant while
in the lawful performance of emergency operations.
Expectation bias
Any preconceived determination or premature conclusions as to
the cause of a fire without having examined or considered all
relevant evidence.
Fire effects
The observable or measurable changes in or on a material as a
result of a fire.
Fire patterns