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The primary concerns and techniques used by crime scene technicians in assessing and processing a crime scene. It covers the importance of using a crime scene barrier, the role of personal protective equipment (ppe) for supervisors, the two basic approaches to team composition, the factors that affect team composition decisions, the five basic search patterns used, the variations of the zone search method, the risks of post-processing exposure to biohazards, the proper response to a suspected drug lab, and the need for establishing standard team processing techniques at a mass crime scene. The detailed information provided in this document could be valuable for students studying forensic science, criminal investigation, or related fields, as it offers insights into the practical considerations and best practices employed by crime scene professionals.
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What is the primary concern of scene assessment by the crime scene technician? To assess a variety of technical and logistical aspects of the scene, which will ultimately define the needed resources and the action taken by the crime scene team. Why is the use of a single crime scene barrier ineffective? It allows for no buffer between what is considered to be the crime scene itself and any on-lookers. How can enforcing use of personal protective equipment (PPE) help control scene integrity with regard to any police supervisors on scene? It reminds supervisors that the crime scene is a dangerous place and forces them to reconsider if they truly need to enter. When setting up crime scene teams, what are the two basic approaches to team composition and how do they differ? The two basic approaches to team development are by area or by function. Identify and describe three of the four factors that affect decisions about team composition? Does the scene consist of a single or multiple scenes? What specialty examinations are required and what order of activity do they demand? What level of resources exists? What is the physical size of the scene? Identify and describe the five basic patterns used to search a crime scene? Circle or spiral – moving in or out of the scene in a circular pattern. Line or strip – moving along designated pathways one time over the scene. Grid – moving in a similar path as the line, followed by a recheck completed at 90 degrees to the first strips. Zone
The crime scene technician can encounter traces of bio-hazards after leaving the scene with durable equipment (e.g. photo placards, pens, flashlights) or by contact with clothing or shoes that were not protected. When presented with a possible drug lab, how does the crime scene technician respond? Stop all processing and egress from the immediate scene. Call in an appropriate HAZMAT and drug lab crime scene team. Why is it important to establish standard team processing techniques at a mass crime scene? The documentation efforts from the various teams working separate areas must all fit together without creating contradictions or confusion.