NSC Alcohol, Drugs & Impairment Division Leaders

Russell J. Lewis, PhD, F-ABFT
russell.j.lewis@faa.gov
Alcohol, Drugs & Impairment Division Chair

Dr. Lewis has been a forensic toxicologist for 28 years and in the field of toxicology and analytical chemistry for 34 years. Dr. Lewis is manager of the Bioaeronautical Sciences Laboratory at the Federal Aviation Administration’s Civil Aerospace Medical Institute in Oklahoma City, Oklahoma. There, he oversees the toxicological analyses of civil aircraft accident fatalities and select National Transportation Safety Board surface accidents, acts as the certifying toxicologist, and provides expert testimony for casework and final case reports. Dr. Lewis also serves as an adjunct assistant professor of forensics for Oklahoma State University Center for Health Sciences, School of Forensic Sciences. Dr. Lewis has authored/co-authored over 85 scientific journal articles, book chapters and government reports. He is certified by the American Board of Forensic Toxicology as a forensic toxicologist. 

Prior to his life as a forensic scientist, Dr. Lewis received a bachelor of science degree with a dual major in chemistry and mathematics in 1991 (Black Hills State University, South Dakota), a master’s degree in chemistry in 1994 (University of Oklahoma), a specialization in neuroscience in 1995 (University of Oklahoma Health Sciences Center) and a Ph.D. in analytical chemistry in 1997 (University of Oklahoma). Dr. Lewis lives on a small acreage in Newcastle, Oklahoma, which is a suburb of Oklahoma City. 

Chris Heartsill, B.S., D-ABFT-FT
Regional Toxicology Liaison – NHTSA Region 7
chris@soft-tox.org
Alcohol, Drugs & Impairment Division Vice Chair

Chris Heartsill is certified by the American Board of Forensic Toxicology as a Diplomate - Forensic Toxicology and received his B.S. degree in chemistry from East Central University in 1991. Chris has been working in analytical chemistry for over 34 years, with more than 30 years of forensic toxicology experience, including the areas of human performance forensic toxicology, postmortem forensic toxicology and forensic laboratory quality management. Chris is the regional toxicology liaison in the mid-south United States. He was previously the quality manager for the Dallas Police Department Crime Scene Response Section. Prior to coming to the Dallas Police Department, he served as the quality manager for the Tarrant County Medical Examiner’s Office in Fort Worth, Texas, and the toxicology supervisor, toxicologist, quality manager and breath testing technical supervisor at the Dallas County Medical Examiner’s Office in Dallas, Texas. 

Chris is an active member of the Society of Forensic Toxicologists, serving as president, member of the Finance Committee, Toxicology Resource Committee and editor of ToxTalk. Other professional organizations include the Southwestern Association of Toxicologists, serving two individual terms as president, Grant Committee chair, and historian, The International Association of Forensic Toxicologists, The National Alliance to Stop Impaired Driving, and the National Safety Council Alcohol, Drugs & Impairment Division, serving on the executive board and performing duties as vice chair. Chris participates in the creation of standards, guidelines and best practices by serving on the OSAC Toxicology Subcommittee. 

Amanda L.A. Mohr, MS, D-ABFT-FT
Director – Chemistry and Toxicology
Center for Forensic Science Research and Education 
mandi-mohr@cfsre.org
Alcohol, Drugs & Impairment Division Secretary

Ms. Mandi Mohr is a forensic toxicologist and a director at the Center for Forensic Science Research and Education (CFSRE) in Horsham, Pennsylvania. In this role, she manages and oversees a diverse portfolio of federally and privately funded research projects and contracts, specializing in forensic toxicology and chemistry. Ms. Mohr earned dual bachelor of science degrees in human biological sciences and sociology (criminology emphasis) from The University of Montana, graduating with honors in 2010. She then completed her master of science in forensic science at Arcadia University in 2012. She became a Diplomate of the American Board of Forensic Toxicology (D-ABFT) in 2018. Ms. Mohr currently serves as vice chair of the SOFT/AAFS Oral Fluid Committee and secretary of the National Safety Council’s Alcohol, Drugs and Impairment Division (NSC-ADID), and is the former section chair of the Toxicology Section of the AAFS. 

As a recognized leader in forensic toxicology, Ms. Mohr has authored or co-authored over 30 peer-reviewed publications and has presented her research at national and international conferences. Ms. Mohr has made significant contributions to the field, particularly in drug-impaired driving and oral fluid drug testing. Her work has earned numerous accolades, including the Forensic Sciences Foundation Student Scholarship Award from the American Academy of Forensic Sciences (AAFS) in 2013, UCT’s Excellence in SPE Award in 2016 and the prestigious 2019 Irving Sunshine Award for Outstanding Research by a Young Investigator from the AAFS Toxicology Section. Beyond her research and leadership responsibilities, Ms. Mohr is an active member of several professional forensic organizations, where she contributes to forensic science education, policy development and mentorship initiatives with the goal of strengthening the field’s impact on criminal justice and public health.