In this episode of Impairment Perspectives, host Joey Jones is joined by Colorado TSRP Jen Knudsen to explore the realities of impaired-driving prosecution in a post-cannabis landscape. Jen shares practical insight on what makes DUI and DRE cases stand up in court—from stronger report writing to confident testimony—and how prosecutors, officers, and scientists can better connect their work to the elements of the case.

It’s a candid conversation about courtroom challenges, evolving science, and the relationships that make this work meaningful—plus a few unforgettable road stories along the way.

In this episode of Impairment Perspectives, Dr. Joey Jones sits down with analytical chemist Lauren Holliday to talk about non-linear career paths in forensic toxicology and beyond. They discuss her move from South Carolina to Boston for graduate school, early experiences in evidence accessioning and toxicology, and the mentors who shaped her growth with tools like GC-MS and LC-MS/MS. The conversation also explores her transition into environmental chemistry and pesticide testing at a wastewater treatment plant, highlighting how forensic skills translate across regulated laboratory settings.

In this episode of the Impairment Perspectives Podcast, host Joey interviews Jen Harmon—nationally recognized forensic science and public administration leader with more than 20 years of experience spanning toxicology, crime lab leadership, and policy work. Jen shares her journey from volunteering as a young intern at the Orange County Crime Lab to supervising forensic alcohol operations and ultimately overseeing multiple lab sections as an assistant director. Along the way, she reflects on leadership lessons, building high-trust teams, improving efficiency through Lean Six Sigma, advancing comprehensive drug testing and DUID programs, and translating lab data into actionable insights for stakeholders. The conversation also touches on her 2018 NHTSA Lifesaver Award, testimony before Congress, and her current focus on consulting, teaching, and helping the field connect science with real-world policy and safer roads.