As you read through the required materials for this week you should come to realize that when approaching and managing a crime scene, each type of physical evidence requires different techniques for identifying, documenting, and collecting that evidence.
Using the required readings for this week, choose a specific type of physical evidence. Find two additional credible sources from the Ashford University Library, or another credible source, that relate to your chosen type of evidence. As you complete your post, keep in mind that the chain of custody must be maintained for all evidence. Include the following elements in your initial post:

Examine how that type of evidence is recognized and identified at the crime scene.
Specify how the position of that type of evidence is documented with relation to the overall crime scene.
Specify how that evidence is collected from the crime scene.
Discuss any field tests used for your chosen type of evidence.

Your initial post should be at least 250 words in length using APA 6th edition formatting. Support your claims with examples from the required material(s) and/or credible sources, and properly cite any references. The Scholarly, Peer Reviewed, and Other Credible Sources (Links to an external site.) table offers additional guidance on appropriate source types. If you have questions about whether a specific source is appropriate for this assignment, please contact your instructor. Your instructor has the final say about the appropriateness of a specific source for a particular assignment.