Gary F. Cornelius

Lt. Gary F. Cornelius retired in 2005 from the Fairfax County (VA) Office of the Sheriff, after serving over 27 years in the Fairfax County Adult Detention Center. His prior service in law enforcement in several agencies included service in the United States Secret Service Uniformed Division. His jail career included assignments in confinement, work release, programs, and classification. Gary taught corrections courses for the Criminology, Law, and Society Department at George Mason University from 1986-2018. He also teaches corrections in service sessions throughout Virginia and has performed training and consulting for the American Correctional Association, the American Jail Association, the International Association of Correctional Training Personnel, the National Institute of Justice, Lexipol and for several jails in Virginia. He also presents online webinars and presentations on correctional issues.

His latest book, The Correctional Officer: A Practical Guide: Third Edition was published in April 2017 by Carolina Academic Press. He has authored several other books in corrections, including The Art of the Con:  Avoiding Offender Manipulation, Second Edition, (2009) from the American Correctional Association, and The American Jail:  Cornerstone of Modern Corrections, (2008) from Pearson Prentice Hall. Gary writes two blogs: “Tales from the Local Jail” on The Corrections Connection ( and “Talks About Training” on Corrections One (   Gary has two books in development:  The Art of the Con:  Avoiding Offender Manipulation, Third Edition, co-authored with Dr. Kevin Courtright of Edinboro University of Pennsylvania. The second is The Twenty Minute Trainer, Second Edition:  Lessons on Correctional Work, Leadership, and Effectiveness from the Civic Research Institute. He resides in Williamsburg, Virginia.

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