He served as a research assistant on the Philadelphia Foot Patrol Experiment during his PhD work at Temple. He has published several research articles on the topics of hot spots policing and crime analysis, three of which involve the topic of foot patrol, and stemmed from the Philadelphia Foot Patrol Experiment. He has taught numerous cohorts of police officers and crime analysts on the topic of crime mapping and crime analysis, and he teaches Central American police commanders on the topic of intelligence-led policing.