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Discussion post: Describe the role of the first responders at a crime scene. How may they affect the crime scene?

Birzer, M., & Roberson, C. (2015). Police field operations: Theory meets practice 2nd ed. Boston, MA: Pearson Education, Inc. ISBN-13: 9780133599381. Retrieved from: http://gcumedia.com/digital-resources/pearson/2014/police-field-operations_theory-meets-practice_ebook_2e.php