Horizontal Gaze Nystagmus—The Science and the Law: A Resource Guide for Judges, Prosecutors and Law Enforcement (2nd edition) Posted on January 25, 2022January 25, 2022 By Becky Carter National District Attorneys Association NTLC; 91pp; 2021 Download PDF Alcohol, Crime Scene Investigation and Reconstruction, Criminal Justice System, DREs / Traffic Safety Resource Prosecutors, Seized Drugs/Controlled Substances, Toxicology