1. Discuss the proper collection of evidence at the origin of a fire that is suspected of being initiated by gasoline. Describe the proper submission of controls for laboratory examination.
2. What are taggants and how are they used to identify explosives?
3. What phenomenon underlies many of the new chemical techniques used to visualize latent fingerprints? Why is this phenomenon so valuable in fingerprint visualization?
4. When should a fingerprint be "lifted" from a crime scene? Describe how to lift and preserve a fingerprint using adhesive tape.
5. What is digital imaging and how is it used in fingerprint analysis? What is the greatest limitation to digital imaging?