Chief Deputy Marlin R. Suell: has over 21 years of service in law enforcement. He began his career at the Smith County Sheriff’s Office in 1989. 2008, he was appointed as Assistant Chief Deputy over Inmate Housing with the Dallas County Sheriff’s Department and recently promoted to Chief Deputy in the Office Of Detentions, April 2010. In April 2012 he was appointed Chief Deputy over General Services. Prior law enforcement assignments have been Detention Officer, Bailiff, Patrol Deputy, Criminal Investigator, Sergeant and Lieutenant. In 1993, Chief Suell received an opportunity to be a part of the U. S. Department of Justice Drug Enforcement Administration (DEA) Task Force. He was the recipient of numerous letters of commendations for outstanding contributions but holds this to be true “No person was ever honored for what he received. Honor has been the reward for what he gave.”…Calvin Coolidge
Master’s Degree in Business Management
Master Peace Officer Certification
Certified TCLEOSE Instructor
Executive Chief Deputy Jesse Flores: retired from the Waco Police Department before joining the Dallas County Sheriff's Department in November 2005. He brings 32 years of law enforcement experience to the Department and the citizens of Dallas County.
Chief Flores' goal is to serve the community in a fair and compassionate manner.
Master’s Degree in Public Administration, Southwest Texas State, San Marcos, Texas
Bachelor’s Degree in Criminal Justice, Baylor University, Waco, Texas
Medal of Valor , Waco Police Department, Waco, Texas
Associate Degree in Criminal Justice, McLennan Community College
Associate Degree in Airframe / Powerplant
Assistant Chief Deputy Jesse Herrera: began his law enforcement career on December 16, 1981 when he as hired as a Detention Service Officer for the Dallas County Sheriffs Department. He was promoted to Deputy Sheriff on March 11, 1985; to Sergeant April 19, 1991; to Lieutenant January 20, 1994; to Captain February 11, 1999. Assignments include Detentions (Housing, Intake, Release, & Support Services), Patrol, Criminal Investigations, Drug Enforcement, Internal Affairs, & the North Texas Auto Theft Task Force.
Jesse Herrera achieved the rank of Assistant Chief Deputy on February 17, 2001. This promotion heralded two Sheriff’s Department “firsts”. He became the first Hispanic Assistant Chief in the Department’s 155-year history and the first entry-level civilian Detention Service Officer to be promoted to the rank of Assistant Chief Deputy. In addition, to this, Herrera was the first Hispanic supervisor in department history to be promoted under the modern civil service system. This provided him with the opportunity to serve as the first Hispanic field commander and Internal Affairs commander.
As captain, he commanded the North Texas Auto Theft Task Force, Dallas County Jail Intake Section, and the Special Investigations Division. As assistant chief, he has commanded the Department’s Operations Services Bureau and the Investigative, and Supports Services Bureau, which encompassed the Judicial Services Division, Patrol Division, the Criminal Investigations Division, and the North Texas Auto Theft Task Force, Traffic Division, Criminal Investigation Division, Physical Evidence Section, Intelligence Section, Personnel Section, and the Academy. He is currently the assistant chief in charge of the Operations and Support Services Bureau for Sheriff Lupe Valdez.
Associate’s degree in Police Science
Bachelor’s degree in Criminal Justic.
1996 graduate of the FBI National Academy in Quantico, Virginia
Basic Jailer, and Basic, Intermediate, Advanced, and Masters Peace Officer’s License from the Texas Commission on Law Enforcement Standards and Education
Instructor’s Certificate from the Texas Commission on Law Enforcement Standards and Education
Herrera also served in the Texas Army National Guard from December 1980 until December 1985.
Assistant Chief Deputy Gary Lindsey: started his career with the Sheriff’s Department in August 1978 as a Deputy Sheriff. In 1982 he was promoted to Corporal and then Sergeant in 1983 assigned to the Patrol Division. In 1986, he was promoted to Lieutenant over the Technical Services Division. Chief Lindsey was promoted to Captain in 1990 and while Captain commanded the Judicial Division, Support Services Division and Patrol Division until 2001. Since that time Chief Lindsey has overseen all areas of the department and now serves as the Assistant Chief of Operations and Support Services.
Masters Degree in Public Affairs (M.P.A.)- University of Texas at Dallas
Bachelor of Science – Sam Houston State University, Huntsville, Texas
Graduate of FBI National Academy and Southwestern Law Enforcement Institute’s Command and Management College
Master Peace Officer Certification
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Assistant Chief Deputy Cheryl Wilson: She began her career with the Dallas County Sheriff's Department as a Detention Service Officer in 1989. She was promoted to deputy in 1991 rising through the ranks of Lieutenant.
In 2009, She was appointed to Assistant Chief Deputy. Her responsibilities include, but are not limited to, Technical Services.
She has a lifetime investment of 21 years with the sheriff's department which has extended her cross-functional experience and training.
Her philosophical approach to leadership is simple: to lead with a vision, manage and empower employees to meet the overall goals and objectives of the department. This perspective compliments the mission of the department which will benefit the employees and the citizens of Dallas County.
Masters of Arts Professional Development- Management- Dallas Baptist University
Bachelors of Arts and Science- Criminal Justice- Dallas Baptist University
FBI-Office of Law Enforcement Coordination, Police Executive Fellowship Program
United States Army National Guard- 1985-1998
Assistant Chief Debbie Foster: Assistant Chief Deputy Debbie Foster was born and raised in San Antonio, Texas. She attended the Southwest Texas State University in San Marcos, Texas. She worked for the University Police Department in San Marcos. In 1998, Chief Foster was hired by the Permian Basin Drug Task Force as an undercover investigator. The Task Force covered 17 counties and Foster made numerous undercover buys which resulted in the arrests of many defendants as well as seizures of currency. Foster worked at the Ark-La-Tex Task Force organizing and acting as the buying agent in several covert undercover operations. Chief Foster was then hired at the Southeast Texas Narcotics and Intelligence Task Force working as an undercover investigator and ultimately promoted to the Assistant Commander of the Task Force. She coordinated a five (5) county area working closely with federal agencies such as U.S. Customs, ATF, DEA, DPS and local Sheriff’s Departments. Chief Foster had the responsibility of managing grant funds and assuring the integrity of all evidence and property. Chief Foster wrote and executed numerous search and seizure warrants. She was also asked to oversee the narcotic operations in Wood County, where she was promoted to Chief Deputy. As Chief Deputy in Wood County, she managed daily operations of the Sheriff’s Department which included, patrol, criminal investigations, K-9 handlers and the daily operations of the jail. Chief Foster also assisted with community relations and was the Crime Stoppers liaison. Chief Foster has more than 20 years of experience and holds the Master Peace Officer Certification. At the Dallas County Sheriff’s Department, Chief Foster is responsible for the Investigative and Judicial Services branch of the department.
Chief Deputy Blaise Mikulewicz: Who oversees the detentions administration, brings over 30 years of law enforcement experience. Mikulewicz most recently served as chief deputy for the Denton County Sheriff’s Office where he oversaw the department’s daily operations and participated in long and short range planning for patrol, investigative and the correctional facilities.
Prior to that, he served a 23-year career with the Federal Bureau of Investigation. Mikulewicz received his appointment to the FBI as a Special Agent in 1988.
Mikulewicz was transferred to the Dallas Division in 1999, as the Supervisory Special Agent of the Domestic Terrorism Squad during which time he played a significant role in the FBI’s efforts to expand the North Texas Joint Terrorism Task Force. In 2000, Mikulewicz was given the responsibility of supervising a multi-agency High Intensity Drug Trafficking Area (HIDTA) Task Force which targeted large-scale narcotics groups within the Dallas-Fort Worth Metroplex. Under the supervision of Mikulewicz, this HIDTA Task Force was recognized for its efforts and received several regional Organized Crime Drug Enforcement Task Force (OCDETF) awards, as well as two national awards from the Executive Office of the President, Office of National Drug Control Policy (ONDCP), HIDTA.
Mikulewicz was promoted to the rank of Assistant Special Agent in Charge for the Dallas Division of the FBI in 2005 and provided Executive Management for Supervisors, Special Agents, Task Force Officers and support personnel working various criminal matters. He directed the day-to-day operations for multiple Drug and Violent Crime Task Forces located within the Dallas Division.
Bachelor’s Degree in Forestry - Multiple Resource Management, Northern Arizona University, Flagstaff, Arizona
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