About the Author

Charles "Sid" Healis a retired Commander from the Los Angeles Sheriff's Department with nearly 33 years of service in law enforcement, nearly half of which has been spent in units charged with handling law enforcement special and emergency operations. Sid has earned three college degrees and is a graduate of the California Peace Officer's Standards and Training, Center for Leadership Development, Command College, and the FBI National Academy. He is the author of Sound Doctrine: A Tactical Primer, and An Illustrated Guide to Tactical Diagramming, as well as more than 120 articles on law enforcement issues. He has appeared on numerous television newscasts and documentaries, and been quoted in many periodicals and newspapers. Additionally, he has been a featured speaker at numerous conferences in Canada, Germany, England, Scotland, Ireland, Israel, Brazil and Argentina, as well as throughout the United States.