He previously spent seven years as a statistician at the Bureau of Justice Statistics, the statistical arm of the U.S. Department of Justice. He teaches a variety of both undergraduate and graduate courses, including statistics, research methods, criminology, intro to the forensic sciences, ethics, and crime mapping. His current research interests are in quantitative methods (statistics and research methodology), law enforcement (including ethics, officer health & safety, police stress, police behavior), and the impact of forensic sciences on the administration of justice. His work has been published in numerous journals including Criminology, Criminology & Public Policy, Journal of Quantitative Criminology, Police Quarterly, Crime & Delinquency, and Policing.