Jack Smith


Jack Smith is an experienced Police Practices and Procedures Expert that has qualified and successfully testified as a Standardized Field Sobriety Test expert witness in the Federal and State courts.


Jack has personally reviewed and evaluated well over 3,000 DUI arrests made in San Diego County by local police agencies and the California Highway Patrol.  Moreover, he has supervised and managed Law Enforcement  “Driving Under The Influence” investigations as a law enforcement supervisor and executive and is extremely competent in finding investigative error that supports a professional defense.


Jack Smith is currently President of JACK SMITH Consulting and Investigative Services, a full-service consulting firm providing assistance to government, attorneys, the business community and persons needing professional assistance regarding police practices and procedures.  His success as a consultant, investigator and expert witness is based upon his extensive law enforcement training, education, knowledge, skills and experience acquired over a 35-year law enforcement career.


Our company is pleased to be part of the Eugene Ellis team and provide professional expert testimony, advice and investigative assistance in a very effective and caring manner as we work together to resolve your important case.



BS Degree – California State University at Long Beach, Criminology

MS Degree – Pepperdine University, Social Psychology

Graduate – Federal Bureau of Investigation National Academy



President, JACK SMITH Consulting and Investigative Services

Own and manage a full-service consulting and private investigation firm, providing assistance to government, attorneys, the business community and private sector.

Serve as an expert witness on the subject of Police Practices and Procedures and Standardized Field Sobriety Testing.


Assistant Sheriff, San Diego County Sheriff’s Department

Developed and directed the Human Resources and Support Bureau for the SD County Sheriff’s Department and co-chaired the San Diego Regional Police and Sheriffs Academy.


Chief of Police, City of El Cajon, California

General Manager of the El Cajon Police Department.


Los Angeles Police Department

Served 26 years with the Los Angeles Police Department as an officer, supervisor and manager.  Extensive experience providing critical policy review on traffic accident investigation, driving under the influence investigations and training, lawsuit evaluation and defense.