FRSC 1010H Chapter Notes - Chapter 2: Hyperparameter Optimization, Command Center
3 May 2018
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● Quick Review
○ The first officer arriving on the scene of a crime has the responsibility to preserve
and protect the area to the greatest extent possible.
○ First priority should be given to obtaining medical assistance for individuals in
need of it.
○ Step must be taken by the first responder to exclude all unauthorized personnel
from the scene and the time at which they do so.
○ The lead investigator is responsible for developing a strategy for the systematic
examination and documentation of the entire crime scene.
○ The lead investigator must gain an overview of the general setting of the scene.
Of particular importance are objects that do not appear to belong or aspects of
the scene that may suggest the timing of the incident.
○ The presence or absence of evidence may also suggest weather the scene is a
primary or secondary scene.
○ At the command center, members of the investigative team receive their
assignments, store their equipment, congregate to talk about aspects of the case,
and communicate with personnel to other crime scenes.
○ How one carries out a crime-scene search will depend on the locale and size of
the area, as well as on the actions of the suspect (s) and victim(s) at the scene.
○ The purpose of the crime-scene search is to locate physical evidence. The
particular circumstances of the crime determine what to search for first.
○ When evidence is found, the location is documented in notes, photographs, and
sketches.
○ When the search is deemed complete, the investigating team conducts a final
survey that includes a visual overview of all parts of the scene, and inventory of
all evidence collected, the retrieval of all equipment, and the neutralization of all
health or safety threats. Once all of these measures have been taken, the scene,
can be released to the proper authorities.
Definitions
● Walk-through
○ The initial survey of the crime scene carried out by the lead investigator to gain
an overview of the scene in order to formulate a plan for processing the scene.
● Primary scene
○ A crime scene at which the original criminal act was perpetrated
● Secondary scene
○ A crime scene separate from the primary scene that became part of the crime by
its involvement in activities after the initial criminal act was perpetrated.
● Command center
○ A secure site outside the boundaries of a crime scene where equipment is
stored, tasks are assigned, and communication occurs.
● Line/strip search pattern
○ A search method used by one or two investigators who walk in straight lines
across the crime scene
