Robert D. Blackledge is a forensic chemist consultant and the former Senior Forensic Chemist at the Naval Criminal Investigative Service, Regional Forensic Laboratory in San Diego, California. He is the author or co-author of roughly 55 journal articles and book chapters, and he edited the book Forensic Analysis on the Cutting Edge: New Methods for Trace Evidence Analysis (Wiley, 2007). Reports of his research have been published in the FBI’s Law Enforcement Bulletin, the FBI’s Crime Laboratory Digest, the Journal of Forensic Sciences, Forensic Science International, and other publications.