Built to Troubleshoot: Cars, Leadership, and Alcohol Testing with David Zimmerman

In this episode of Impairment Perspectives, host Joey Jones talks with David Zimmerman, Assistant Laboratory Director at the Kern Regional Crime Laboratory, about the science and practice behind forensic alcohol testing. David shares his path from chemistry teacher to forensic toxicologist, explains why headspace gas chromatography with flame ionization detection remains a reliable standard in the lab, and discusses troubleshooting, measurement uncertainty, courtroom communication, and the realities of leading a modern toxicology program. The conversation also highlights the hands-on mindset required in forensic science and the importance of clear, practical training for professionals involved in impaired driving cases.