Major John Marr is a 1983 graduate from Slidell High School, in the State of Louisiana. He then attended Southeastern Louisiana University, University of Southern Mississippi and University of Tennessee, Chattanooga, majoring in Criminal Justice.
In 1994, Major Marr began his lifelong career in Law Enforcement with the Harrison County Sheriff’s Office as a Corrections Deputy in the Adult Detention Center. In 1996, he graduated from the Harrison County Sheriff’s Office Law Enforcement Training Academy and was assigned to the Patrol Division where, in 1998, he became a Dog Handler in the K-9 Unit. A position he held with pride until 2004, when he was promoted to the rank of Sergeant. In 2015, he was again promoted to the rank of Captain, supervising Patrol Shifts on both the day and night watches.
Due to his distinguished service to the Sheriff’s Office and our community, it was Sheriff Peterson’s honor to promote him to the rank of Major of Operations in 2021, where Major Marr now supervises the Sheriff’s Patrol, Communications, School Resource and Animal Control Divisions, as well as the Sheriff’s specialized S.W.A.T, K-9, Motorcycle, Aviation and Marine Units.
Major Marr is the proud father of two sons and five daughters and is delighted to be the grandfather of six beautiful grandchildren.
Captain Brandon Hendry is a law enforcement professional with 20 years of experience.
Captain Hendry started his career as a Corrections Officer in 2003, before graduating from the Mississippi Law Enforcement Officers Training Academy in 2004. He earned a bachelor’s degree in criminal justice in 2006 from the University of Southern Mississippi and joined the Harrison County Sheriff’s Office in 2009. Throughout his career he has held various positions of responsibility, including Patrol Deputy, Narcotics Investigator, Wildland Arson Investigator, Highway Criminal Interdiction Officer, Interdiction Unit Supervisor, Helicopter Pilot, and Training Academy Coordinator. In 2023, Captain Hendry was promoted to Director of Training for the Harrison County Sheriff’s Office, where he oversees all training and professional development of Law Enforcement Professionals across the region.
Captain Hendry is married to his wife, Mckinsey, and they have two children, Kaleb and Joanna.
Warden Hubbard is a native of South Mississippi.
Warden Hubbard began his career in Corrections as a Correctional Officer with the Harrison County Sheriff’s Office in 2005.
In 2007, the Harrison County Correctional Emergency Response Team (C.E.R.T.) was formed as a tool to deal with inmates that posed a threat to officers and other inmates. Warden Hubbard was selected as the Team Leader and went on to be trained in Riot and Crowd control.
While being promoted to Lieutenant 2008, Warden Hubbard served as Second in Command of the temporary extension units for the main Adult Detention Center in Gulfport, MS. He was certified by the State of Mississippi Board of Minimum Standards as a Law Enforcement Instructor at the Harrison County Law Enforcement and Corrections Academy.
Warden Hubbard has been an active member of The Mississippi Association of Gang Investigators (M.A.G.I.) since 2007. During his training, he developed a method of validating gang members and identifying their tattoos/markings. That method allows gang awareness to be presented to local schools and other Law Enforcement Agencies. He is continuing to compile data on gang presence in Hancock County and throughout South Mississippi.
In 2011, Warden Hubbard was chosen to serve as first Warden of Hancock County’s newly constructed Public Safety Complex.
In 2014, Warden Hubbard was elected President of Mississippi Jail Association.
In December of 2014, Warden Hubbard returned to the Harrison County Sheriff’s Department as the Warden of the Adult Detention Center. Warden Hubbard is married to his wife Lisa. Together they have 2 sons, 1 daughter and 12 grandchildren.