Leadership Team

Chief of Police
619-594-1137
[email protected]

Chief Gregory L. Murphy brings over 30 years of law enforcement experience, with a strong background in police operations, investigations, and advocacy. 

His career began after serving in the U.S. Air Force when he joined the Los Angeles Police Department (LAPD). At LAPD, Chief Murphy specialized in street gang enforcement and the suppression of criminal gang activity. He also played a key role in developing the agency's data warehouse, which tracks and reports on use-of-force incidents, preventable collisions, community complaints, and lawsuits. 

After his time at LAPD, Chief Murphy joined the University of California, Davis, and later became a regional manager for the California Commission on Peace Officer Standards Training (POST) in Sacramento. In this role, he trained and consulted with over 200 California police agencies. 

Chief Murphy returned to uniformed public safety in higher education, serving as chief of police across all three of California's higher education systems: the California Community College, California State University, and University of California systems. Most recently, he served as the Acting Chief of Police for the University of California, San Diego, where he collaborated with other UC campus police chiefs to implement police reform within the UC system. 

Chief Murphy holds a master's degree in information technology and a bachelor's degree in computer science. He is a lecturer for the University of Virginia's Master's in Public Safety Program and the Sierra Community College District's Administration of Justice Program. His research focuses on principled policing, police use of force, and community policing. 

Chief Murphy believes in building strong community relationships and maintaining open dialogue as core pillars of effective policing. His approach is guided by what he calls the six E's of public safety: Environment, Engagement, Education, Enforcement, Empowerment, and Empathy. As Chief of Police for SDSU, he aims to further enhance public safety initiatives while fostering a sense of service, care, and belonging.

Assistant Chief of Police
619-594-3877
[email protected]

Assistant Chief Hank Turner began his law enforcement career in 1992 as a deputy with the San Diego Sheriff's Department (SDSD), eventually rising to the rank of Commander. Over his 30 year tenure at SDSD, he served in various roles, including training officer, detective, supervisor of the Sheriff's Child Abuse Unit, and supervisor of the San Diego Integrated Narcotics Task Force. He also served as the department's Watch Commander at the Communication Center, among other positions. 

In May 2022, Assistant Chief Turner joined the San Diego State University Police Department (UPD) as a Captain, and by January 2023, he was promoted to Assistant Chief. In this role, he oversees the daily operations of the department's patrol, investigations, special events, and operational support units.

Assistant Chief Turner holds a bachelor’s degree in Criminal Justice Management and is a graduate of the Senior Management Institute of Policing in Boston. He also completed the Harvard Law School Work and Labor Program. For over 20 years, he volunteered as a camp counselor and director for a leadership program for at-risk and under-served high school students in San Diego County. Additionally, he teaches at the regional POST Sergeant School and the San Diego Regional Leadership Institute. 

A strong advocate for community policing, Assistant Chief Turner enjoys collaborating with community stakeholders to ensure a safe environment for everyone. 

Lieutenant - Special Events
619-594-0807
[email protected]

Amy Lisk is a graduate of San Diego State University with a degree in Speech Communication. She began her career in law enforcement with the San Diego Sheriff’s Department in 1995 and retired as a Commander in 2023, after 28 years of service. As a deputy, she served as a Training Officer, Corporal, and School Detective. Amy was promoted to the rank of Sergeant in 2007. As a Sergeant, she worked Patrol Operations and with the Inspectional Unit. Amy was later promoted to Lieutenant, and worked with the Tactical Narcotics Team, Border Crime Suppression Team, Personnel Division, and Patrol Operations. In 2018, Amy was promoted to Captain and oversaw the San Marcos Patrol Station, before being promoted to the rank of Commander in 2022. As a Commander Amy was in charge of the Human Resources Division, which included; Personnel, Backgrounds, Training, Weapons Training, Internal Affairs, Employee Relations and the Medical Liaison Unit.

Amy is a graduate of the Sherman Block Leadership Institute, the Drug Unit Commanders Academy and the 276th session of the FBI National Academy.

Lieutenant - Administration
619-594-0959
[email protected]

Lieutenant Eric Burris began his career with the San Diego State University Police Department (UPD) in 2013 as a patrol officer. Over the years, he has served in various key roles, including Detective, Patrol Sergeant, and Administrative Sergeant. In 2021, he was promoted to Lieutenant and currently oversees Administration.

Lt. Burris earned a Bachelor’s of Science degree in Domestic Security Management from National University in 2011.

Lieutenant - Investigations
619-594-2968
[email protected] 

Lieutenant Sean Sayre grew up in, and still resides in, the East County area of San Diego. After graduating high school, he attended Grossmont College and obtained his associate degree in criminal justice. During his time at Grossmont College, he attended their Reserve Police Academy and was appointed as a Reserve Police Officer by the El Cajon Police Department.  

After two years as a volunteer, the El Cajon Police Department appointed Lt. Sayre as a full-time police officer. During his 20 years with the El Cajon Police Department, Lt. Sayre served as a Communications Center Officer, School Resource Officer, Community Service Officer, Domestic Violence Detective, and Bike Officer. He was also a member of the Crisis Negotiations Team and a supervisor for the department’s Explorer Program.  

In 2019, Lt. Sayre joined the San Diego State University Police Department as an officer. He was promoted to Sergeant in 2020 and was assigned to assist with Special Event Planning in 2022. He was promoted to Lieutenant in 2023 and currently supervises the Patrol Division.  

Lieutenant - Patrol
619-594-1279
[email protected]

Lieutenant Ron Flores began his law enforcement career in 1997 and brings over 27 years of experience in community-based policing. He is also passionate about training law enforcement officers. He retired from the Fresno Police Department in April 2022, after serving in various roles including K9 handler, FBI Joint Task Force Liaison, Assistant Team Leader for the SWAT Team, Investigator, School Resource Officer, and Instructor at the Fresno Police Department Regional Training Center. Additionally, he served as a Police Academy Instructor at the College of the Sequoias.

After retiring, Lieutenant Flores joined the San Diego State University Police Department (UPD) as an Officer in April 2022. He was quickly promoted to Sergeant in January 2023. In these roles, he served as a Range Instructor, Less Lethal Instructor, Dignitary Protection Sergeant, and oversaw the Special Events Unit. In August 2024, he was promoted to Lieutenant and now oversees the Patrol Division.

Associate Director of Police Support Services
619-594-6648
[email protected]

Chanin Harrison began her career with the San Diego State University Police Department (UPD) in 2003 as a student assistant in the Parking and Key Issue Office.  She quickly aspired to become a police dispatcher after hearing police radio traffic and witnessing the police dispatchers at work in the communications center.  Chanin was sworn in as a police dispatcher with the department in 2005.  She served as a tactical dispatcher, communications training officer, and lead dispatcher.

In 2011, Chanin transitioned into the position of executive assistant to the Chief of Police where she supported the Office of the Chief and fiscal operations of the department. Chanin was appointed to communications center and fiscal manager in 2015. Since then, she has been appointed to Associate Director of Police Support Services. 

Chanin received her bachelor’s degree in psychology from SDSU with a minor in women’s studies.

Public Information Officer
619-594-5928
[email protected]

Amanda Stills, a San Diego native, brings over thirteen years of law enforcement experience from the El Cajon Police Department. Throughout her career, Amanda has held diverse roles including Emergency Dispatcher, Public Services Officer, Community Information Officer, Background Investigator, and Crisis Negotiator, with a specialization in social media and community engagement.

Passionate about community involvement, Amanda actively volunteers with the Every 15 Minutes program and Shop with a Cop. She is also currently developing a course aimed at teaching Social Media Management for law enforcement, believing that relatable community engagement can bridge the gap between law enforcement and the public.

Amanda earned her Bachelor’s degree in Criminal Justice from San Diego State University.

Assistant Director of Security Systems
619-594-5846
[email protected]

Ashley Jones began her career with San Diego State University Police Department in 2010 as an accounting technician for the Parking and Key Issue Office. She developed an interest in physical security while working with the access control and key systems on campus and in 2014 became an analyst responsible for the day-to-day operations of the Key Issue Office. Her role later expanded to include campus cameras and in June of 2024, Ashley was appointed Assistant Director of Security Systems. 

Ashley earned her Bachelor of Arts in Political Science and Master of Science in Homeland Security from San Diego State University.  She is also certified in CPTED (Crime Prevention Through Environmental Design) principles.

Director of Emergency Management 
619-594-4414
[email protected]

Dr. Lisa Peumsang is the Director of Emergency Management for SDSU and has nearly a decade of emergency management experience in higher education and with a municipality. She is well-versed in emergency planning, response, training, and recovery and has coordinated Emergency Operations Center response for numerous incidents across Southern California. She holds a Doctorate in Public Administration and a Master of Science in Emergency Management from Walden University and a Bachelor of Arts in Political Science from UCLA.