EN ESPAÑOL
 

Dallas County Sheriff

Administration


Click here for the Dallas County Sheriff's Department Organization Chart

Jesse Flores 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
  • Medal of Valor , Waco Police Department
  • Associate Degree in Criminal Justice, McLennan Community College
  • Associate Degree in Airframe / Powerplant
Office of Administration – 214.653.2901

  Office of General Services – 214.653.3462

Debbie Foster Assistant Chief Deputy Debbie Foster is responsible for the Investigative and Judicial Services at the Dallas County Sheriff’s Department. She has more than 20 years of law enforcement experience working with agencies at the local, state and federal level.

Chief Foster was born and raised in San Antonio, Texas. She attended the Southwest Texas State University in San Marcos, Texas and worked for the University Police Department there. In 1998, Chief Foster was hired by the Permian Basin Drug Task Force as an undercover investigator. The Task Force covered 17 counties and she made numerous undercover buys which resulted in several arrests as well as currency seizures. Chief Foster worked at the Ark-La-Tex Task Force where she acted as the buying agent for covert undercover operations. She then was hired at the Southeast Texas Narcotics and Intelligence Task Force where she worked as an undercover investigator until she was promoted to Assistant Commander of the Task Force. She coordinated a five county area, working closely with federal agencies such as U.S. Customs, ATF, DEA, DPS and other sheriff's departments. Chief Foster 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 and the daily operations of the jail. She also assisted with community relations and was the Crime Stoppers liaison.
  • Master Peace Officer Certification
Investigative and Judicial Services – 214.653.3451

Gary Lindsey Assistant Chief Deputy Gary Lindsey oversees Operations and Support Services. He started his career with the Dallas County Sheriff's Department in 1978 as a deputy sheriff. In 1982, he was promoted to corporal and then sergeant in 1983 when he was 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. He commanded the Judicial Division, Support Services Division and Patrol Divisions until 2001.
  • Master’s Degree in Public Affairs (M.P.A.) - University of Texas at Dallas
  • Bachelor of Science - Sam Houston State University, Huntsville, Texas
  • Graduate of the FBI National Academy and Southwestern Law Enforcement Institute's Command and Management College
  • Master Peace Officer Certification
Operation and Support Services – 214.653.3451

Blaise Mikulewicz Chief Deputy Blaise Mikulewicz oversees the detentions administration and 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, thie 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
Detentions Administration – 214.653.2902

Photo Pending Assistant Chief Deputy Jason Hartgraves oversees the Technical Services Bureau. He began his career with the Dallas County Sheriff's Department as a detention service officer in 1990. He became a deputy in 1993 rising through the ranks. He most recently served as captain over the department’s internal affairs division.
  • Masters of Science in Management – Texas A&M University-Commerce
  • Bachelors of Arts and Science - Dallas Baptist University
  • Graduate Certificate in Criminal Justice Management – University of Virginia
  • FBI National Academy 231st Session
  • 42nd Management College – Institute for Law Enforcement Administration
  • 81st School of Police Supervision – Institute for Law Enforcement Administration
  • Grant Management – Grant Writing USA, Inc.
  • Masters Peace Officer's License from the Texas Commission on Law Enforcement Standards and Education
Technical Services Bureau – 214.653.2601

Jesse Herrera Assistant Chief Deputy Jesse Herrera oversees the Inmate Housing Bureau. He began his law enforcement career in 1981 as a detention service officer with the Dallas County Sheriff’s Department. He was promoted to deputy sheriff in 1985; became sergeant in 1991; then lieutenant in 1994; and captain in 1999.

It was a historic milestone when Chief Herrera became assistant chief deputy in 2001. He became the first Hispanic in the department’s history to fill that position. He also is the first entry-level detention service officer, as a civilian, to be promoted to assistant chief deputy.
  • Associate's Degree in Police Science
  • Bachelor's Degree in Criminal Justice
  • 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
  • Texas Army National Guard from December 1980 until December 1985
Inmate Housing Bureau – 214.653.2601

Darryl D. Thomas Chief Financial Officer Darryl D. Thomas has over three decades of experience in the public and private sectors of accounting:  financial and performance audits, governmental/non-profit, oil and gas, taxation, banking, information technology, management and staff supervision and teaching and training.  In 1999, he became the chief financial officer for the Dallas County Sheriff’s Office.  He manages a $143 million annual budget and serves as liaison to the Dallas County Commissioners Court.
  • Certified Public Accountant
  • Bachelor of Business Administration – Accounting
Management Services Division – 214.653.2763

Elizabeth Lutton The Dallas County Sheriff’s Department Legal Advisor Elizabeth Lutton provides counsel to Sheriff Lupe Valdez and the department employees internally. She has previously worked for the City of Arlington as a senior attorney and the City of Odessa as a senior assistant city attorney. Her area of practice is local government employment law and she has over 25 years of experience in labor and employment law, as well as police procedure.
  • Doctor of Jurisprudence Degree – Texas Tech University
  • Master's Degree in Business Administration
  • Bachelor’s Degree in Business Administration
  • Board certified by the Texas Board of Legal Specialization in labor and employment law
Legal Advisor – 214.653.3453