David Barajas, Armed Forces Medical Examiner System analytical toxicologist 2, pipettes liquid to reconstitute a substance from the turbovap October 31, 2019 at the AFMES Forensic Toxicology lab. Once reconstituted, the specimen is tested using Liquid Chromatography Tandem Mass Spectrometry, where any synthetic cannabinoids, fentanyl or norfentanyl are separated out and identified. (U.S. Air Force photo by Staff Sgt. Nicole Leidholm)