Executive Fellows

Captain Cory S. Nelson

Captain Cory Nelson is a 30-year veteran of the Madison Police Department and currently serves as the West District Commander. During his tenure with the MPD he has served a variety of roles including a being a Patrol Officer for 9 years and a Detective for 14 years, serving mainly in Persons Crimes and Narcotics. After being promoted to Lieutenant, he was the Officer in Charge of Third Detail, in charge of the Professional Standards and Internal Affairs (PSIA) Unit, then assigned to Investigative Services and Asst. SWAT Team Commander.

While assigned to the PSIA office he revamped the way MPD handles discipline by creating a discipline process that was fully supported by the officers in the department and is in use today.

Captain Nelson was selected by the National Institute of Justice as a Law Enforcement Advancing Data and Science (LEADS) Scholar in 2015. Captain Nelson has worked recently with Dr. Cynthia Lum and Dr. Chris Koper on a violence reduction program in his district that was so successful, it was implemented city wide. He authored an article on the effort — published in the Spring 2018 edition of Translational Criminology Magazine.

Captain Nelson spoke at the 2017 IACP Conference in Philadelphia about an opiate-related criminal diversion program he started in Madison. He also works as a consultant for the US DOJ on Focused Deterrence and recently helped Memphis TN start up their own program.  He was invited to speak about Madison’s success with focused deterrence at recent Project Safe Neighborhoods conference, Violence Reduction Network conference and the US Attorney General’s conference. He is also an instructor for the WI Dept. of Justice on Internal Affairs.

Captain Nelson is a Wisconsin Command College graduate and certified WI Public Manager. He has also attended the IACP-Leadership in Police Organizations course. He has volunteered for many years with Special Olympics – Wisconsin State Games, the WI Torch Run, as well as the  Concerns for Police Survivors (COPS) Kids Camp that is held in Wisconsin each year.

Chief Keith L. Humphrey

Keith L. Humphrey was born and raised in Western and Southern Dallas, Texas. He has a Bachelor of Business Administration and a Master of Business Administration. He began his police career with the Fort Worth Police Department and later worked for the Arlington Police Department. While in Arlington, he worked various assignments including supervising patrol, training, recruiting, internal affairs, property/evidence and crime scene.

In January 2008, he accepted the job as the Chief of Police for the City of Lancaster, Texas.  By cultivating strong community partnerships, candid dialogue, and a strong commitment to make Lancaster one of the safest cities in the nation, from both external and internal stakeholders, community oriented policing became the foundation for Lancaster experiencing two consecutive double digit decreases in overall crime and, in 2010, reductions in both robberies and property crimes.  Lancaster became one of the first police departments in the nation to partner with an independently owned crime lab (Integrated Forensic Laboratories) to provide forensic service.

In June 2011, Chief Humphrey proudly and humbly accepted the job as the Chief of Police of Norman, OK. Chief Humphrey strongly believes that Norman is a nationally recognized vibrant and premier city that has openly embraced community oriented policing and 21st century policing initiatives. In 2016, the police department and Norman Public Schools entered into a partnership by creating a School Resource Officer Program. The program is funded by a permanent public safety sales tax and school funding. The program focuses on safety, youth partnerships, development, mentoring, and youth and law enforcement proactive engagement. The program also focuses on reducing the school to prison pipeline theory. The department also implemented Racial Intelligence Training and Engagement (RITE).  The program focuses on a 21st century policing approach to empower officers to improve communication and emotional intelligence (wellness on and off the street), while building departmental morale and community trust at the same time.

In 2017, the Norman Police Department became the first and only city in Oklahoma to be selected to participate in the Police Data Initiative. The program was established by the White House and the Police Foundation in an effort to use open data to encourage joint problem solving, innovation, enhanced understanding, and accountability between communities and the law enforcement agencies that serve them.  Chief Humphrey also led the implementation of DDACTS (Data Driven Approaches to Crime and Traffic Safety), which, in city of nearly 200 square miles, he believes is helping Norman become one of the safest cities in America.  He takes pride in knowing that, as chief, he is responsible for the safety of all of the citizens of his city.

Chief Humphrey is a graduate of the Bill Blackwood Law Enforcement Management Institute Command College (LEMIT). He is a member of the International Association of Chiefs of Police, International Association of Chiefs of Police Community Policing Board, Police Executive Research Forum, National Organization of Black Law Enforcement Executives, FBI Law Enforcement Executive Development Association, Board of Directors of Cleveland County YMCA, Crossroad Family and Youth Services, and Transition House (a community program in which those in crisis find pathways to mental wellness).  In 2015, he was appointed by Governor Mary Fallin to serve as a Commissioner for the Oklahoma State Bureau of Investigation. He is also a 36-year member of Phi Beta Sigma Fraternity Inc. He currently serves as an adjunct professor at the University of Oklahoma. Chief Humphrey is married with three daughters and one grandson.  He has over 30 years of law enforcement experience.

Captain Ken Clary

Captain Ken Clary has worked for the Iowa State Patrol since 1994 and currently serves as an Area Commander, which involves the oversight of four patrol districts totaling approximately one quarter of the State of Iowa. During his time with the ISP, Captain Clary has held a variety of positions including CALEA Accreditation Coordinator for the Department of Public Safety, Field Operations Commander, and Statewide Tactical Team / Weapons of Mass Destruction Response Team Coordinator.

Captain Clary was selected by the National Institute of Justice as a Law Enforcement Advancing Data and Science (LEADS) Scholar in 2016.  Captain Clary is working directly with Dr. Cynthia Lum and Dr. Chris Koper at George Mason University to implement a multi-year project and associated study within his Area.  This project implements hot spot enforcement, Koper Curve, and community policing, attempting to reduce rural traffic crashes and resulting fatalities.  His other research has involved officer involved shootings and intrinsic bias.  Captain Clary has presented at a number of academic and professional police conferences including the Center for Evidence-Based Crime Policy and the International Association of Chiefs of Police.

Captain Clary received his Bachelor’s degree in Criminology from the University of Northern Iowa and his Masters in Public Administration from Upper Iowa University.  He is a graduate of the FBI National Academy Session 269, International Association of Chiefs of Police – Leadership in Police Organizations, and the Northwestern University School of Staff and Command.

Captain Clary was a Law Enforcement Torch Run (LETR) Committee Member for four years and, he currently serves on the Executive Board for the Food Bank of Iowa.  He received the Governor’s Volunteer Award in 2014 and 2016 due to his volunteer efforts.

Chief Pat Walsh

Chief Pat Walsh started his career in the Los Angeles County Sheriff’s Department in 1984.  In 1991, he moved to the Pacific Northwest and began working for the Portland Police Bureau.  While with the Portland Police, Chief Walsh worked a variety of assignments to include gang enforcement, narcotics, patrol, office of accountability and professional standards, tactical operations, chief’s adjutant, executive officer and the compliance coordinator for the federal settlement agreement between the United States Department of Justice and Portland.

In 2014, Chief Walsh began his current position as the Chief of Police for the Lompoc Police Department in Lompoc, California.  Chief Walsh has been the region representative for the California Police Chiefs Association since 2015.  He represents municipal police chiefs in San Luis Obispo, Santa Barbara, and Ventura Counties.

Chief Walsh has a Bachelor of Arts degree from Concordia University in Management Communications and Leadership and a Master’s degree in Security Studies from the Naval Postgraduate School, Center for Homeland Defense and Security.

Chief Walsh wrote his master’s thesis on building trust between the community and the police.  His thesis is titled, “A Practitioner’s Guide to Trust and Legitimacy.”  Link to thesis: https://calhoun.nps.edu/bitstream/handle/10945/37737/13Sep_Walsh_Patrick.pdf?sequence=1

Chief Walsh is committed to the study of police procedures and the ever changing science and practices that strengthen the profession.

Chief Travis Walker

Chief Travis Walker joined the Cathedral City (CA) Police Department in September of 2016 as Deputy Police Chief. He was promoted to Police Chief in October of 2017.

Prior to joining Cathedral City Police Department, Chief Walker spent twenty years with the San Bernardino Police Department, where he worked a variety of assignments throughout his career; to include Patrol, Bicycle Mounted Enforcement, Narcotics, Gangs, K9, Specialized Enforcement Bureau, and various Detective, Supervisor, and Management Assignments. He also served as the Tactical Commander during the 2015 terror attack in the city of San Bernardino.

Chief Walker has a Master’s Degree in Leadership and Disaster Preparedness from Grand Canyon University and possesses a Management Certificate issued by the California Commission on Peace Officers Standards and Training. He is also a graduate of the Sherman Block Supervisory Leadership Institute.

Chief Walker is a recognized subject matter expert in the areas of Active Shooter Response, Critical Incident Management, Gangs, Incident Command, and Narcotics.

Assistant Chief Rodney Parks (Ret.)

Rodney Parks is a former Assistant Chief of Police with the Metropolitan Police Department. He retired in 2013 after thirty-one years in law enforcement, serving in numerous operational, investigative, and programmatic units of the Department.

His law enforcement career includes assignments in patrol, traffic, disciplinary unit, training academy, homicide branch lieutenant and commander, commander of criminal investigations, and assistant chief of the Professional Development Bureau. During his tenure with the Homicide Unit, he led its members to superior performance in attaining over a 70% closure rate. He has served on various review boards and assisted in new policy review, analysis, and implementation. Mr. Parks has led new projects designed to improve and enhance the administration and operation of the department. Many of his assignments required coordination and collaboration with outside law enforcement and community partners, to include working a dual role as interim Chief of the D.C. Protective Services Division to provide assessment and recommendations to the City Administrator.

Following his retirement, Mr. Parks currently works as an adjunct professor with Penn State Public Safety & Justice Institute, University of the District of Columbia, and an instructor with the BenchMark Professional Seminar Company. Mr. Parks serves as Academic Director for the Georgetown Forensic Institute Summer Camp and Summer Discovery Program for middle and high school students. Mr. Parks has a Bachelor’s and Master’s degree in Management from Johns Hopkins University. He is also a graduate of the 201st Session of the F.B.I. National Academy.

Chief Jennifer Tejada

Chief Jennifer Tejada has been working in municipal law enforcement for over 24 years. She has created programs and/or worked in a leadership capacity in several specialized areas including Community Policing Programs, Juvenile Justice Reform, Threat Management, Emergency & Disaster Preparedness, Workplace Violence Prevention, Domestic Violence and Sexual Assault Prevention, and Hostage Negotiation. She has also served on several violence prevention and victim services committees, boards and commissions, both locally and regionally in the State of California.

Chief Tejada is a strong advocate for building trust and community partnerships and working closely with public and private entities to deliver efficient and quality service to all community members. She is the recipient of several awards, including the James Q Wilson award in Community Policing. In her leadership capacity, Chief Tejada has been tirelessly advocating for the inclusion of mindfulness based resiliency training in First Responder Wellness programs to address the high rates of depression, suicide, PTSD, substance abuse, sleep deprivation, and trauma.

Chief Tejada served for 4 ½ years as the police chief in Sausalito and has been serving as the Chief of Police for the City of Emeryville since 2015.

Chief Deanna Cantrell

Deanna started with the San Luis Obispo Police Department as the Chief of Police on January 4, 2016. Prior to this appointment, she was with the Mesa, Arizona Police Department for 21 years, with her last assignment as the Assistant Chief of the Administrative Services Bureau where she oversaw Fiscal, Supply, Fleet, Police Information Technology, Communications, Records and the Forensics Lab. Deanna served as the Deputy Chief of Special Operations, Patrol Commander, Internal Affairs Lieutenant and Sergeant, Gang and Patrol Lieutenant, and many other positions within the police department, including time spent as a Motor officer in Traffic and several Special Operations positions.

Deanna has consistently reduced harm in her communities by increasing public safety and trust through data-driven, intelligence-led policing, as well as significant community engagement and participation. She started the Police And Community Together (PACT) Board and Policing Education And Community Engagement (PEACE) program since moving to SLO. She served on the NAACP Legal Redress Committee, the Muslim Police Advisory Board, and was chair of the Human Rights Forum in Mesa. She served as the chair of the diversity and peer support teams and was the department’s Subject Matter Expert for constitutional matters regarding search and seizure.  Deanna was an advisor and briefly served as the Chair of the Arizona Women’s Initiative Network (AZ-WIN) serving to increase the number of women in policing. Deanna is now the chair of the Criminal Justice Administrators Association for SLO County, serves on the YMCA board, the Homeless Services Outreach Committee, the Hancock Academy board, and is on the Changing the Narrative Committee with the California Police Chiefs Association.

Deanna holds a Bachelor’s of Science degree in Education and a Masters of Administration from Northern Arizona University. She is a graduate of Northwestern University Police Staff and Command School and the International Association of Chiefs of Police Leadership in Policing Organizations. Deanna is an adjunct faculty member for Northwestern University teaching policy, contemporary policing, and executive image.


Major David Dalton

Major David Dalton has nearly twenty-five years of law enforcement experience with both the Auburndale (Florida) Police Department and the Clearwater (Florida) Police Department. He began his career with the Clearwater Police Department in 1996 and ultimately served within the Department’s Old Clearwater Bay Neighborhood Policing Team and within the agency’s Detective Division, first as a Crimes Against Children and Families (Sex Crimes) Detective and later as a Homicide Detective.

As a sergeant, Major Dalton held supervisory positions as a Patrol Team Sergeant, Patrol Support Team Sergeant, and Internal Affairs Investigator, while assuming additional responsibility as the Department’s Accreditation Manager. As a Lieutenant, Major Dalton held positions as the Assistant Commander of the Support Services Division, Assistant Commander of the Criminal Investigations Division, and as the Clearwater Beach District Commander, where, during his two years of assignment to this position, he was twice selected as the Clearwater Beach Chamber’s “Citizen of the Year.”

Major Dalton is currently assigned as the Support Services Division Commander of the Clearwater Police Department, with oversight of numerous functions including: personnel, training, budget/fiscal management, property/evidence, and communications. Major Dalton possesses extensive experience in investigations, training, recruitment, policy development, accreditation, community/neighborhood policing, and technology implementation.

Major Dalton has been recognized for his commitment to research driven principles, civic engagement, and community partnerships. He maintains strong relationships with research institutions, such as the University of South Florida, Department of Criminology. In 2016, he was inducted into the University of South Florida’s Department of Criminology Wall of Fame for Distinguished Alumni.

Major Dalton holds both a BA in Criminal Justice and a Master’s Degree in Criminal Justice Administration from the University of South Florida in Tampa. He is also a graduate of the Police Executive Research Forum Senior Management Institute for Police, Session #50, the United States Drug Enforcement Agency’s Drug Unit Commander Academy, and the Florida Police Chief’s Association Future Law Enforcement Executive course.

Major Dalton resides in Tampa, Florida, with his wife Anna, who is a Pediatric Cardiologist, and their son.

Chief Christopher Catren

Christopher R. Catren was selected as the Chief of Police for the City of Redlands on December 20, 2017. He leads a progressive group of 84 sworn officers, 31 full-time and 17 part-time professional staff, and nearly 100 volunteers. The department serves approximately 70,000 residents across nearly 40 square miles. Redlands Police Department is a full-service, municipal police department comprised of teams who perform functions such a patrol, investigations, communications, traffic, K-9, SWAT, and multiple enforcement and community policing activities. The department has a history of utilizing technology to improve its delivery of services to the community.

Chief Catren began his career in law enforcement in 1994 with the Redlands Police Department as its first crime analyst. In this role, he quickly learned the value of transforming data into information to further the department’s prevention, intervention and suppression activities. In 1996, Chief Catren became a sworn police officer and worked his way through the ranks to include assignments as an investigator, training officer, field supervisor, detective and sergeant. His supervisory positions included investigations, patrol, field training coordinator and Reserve Police Officer coordinator. In 2007, Chief Catren was promoted Lieutenant and managed the Investigative Services Bureau, the Patrol Services Bureau and the Special Operations Bureau during his tenure. He was promoted to Commander in 2013, and oversaw each of the department’s divisions before promoting to the position of Chief of Police.

Chief Catren possesses a bachelor’s degree in Business Administration from California State University, San Bernardino.  He also earned a master’s degree in Public Administration from the same institution.  He graduated from the California POST Command College in 2012.

Chief Catren is a member of the California Police Chief’s Association and represents the association on the Statewide Data Sharing Task Force and as a member of the Technology Committee.

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