The document discusses tools and techniques used in forensic laboratories. It describes how forensic labs are divided into areas that investigate biology, chemistry, DNA, and drugs/toxicology. Additionally, it lists specific labs for fingerprints, trace evidence, serology/DNA, materials, firearms, photography, and chemistry. The document also outlines the contents of a typical crime scene investigation tool kit, including evidence collection tools, fingerprint kits, photography supplies, and protective gear. It emphasizes the importance of properly collecting, handling, and transporting all evidence following department policies and procedures.