Patrol Division

Alan Guevara

Lieutenant Alan Guevara started his journey with the San Luis Police Department in 2000 as a Police Explorer. Then, in 2004 he was hired as an SLPD Communications Officer, where he trained new Communications Officers. The San Luis Police Department selected Lieutenant Guevara to attend the Arizona Western College Law Enforcement Training Academy in 2010. He graduated in 2011 and was transferred into a Police Officer position.

Lieutenant Guevara was promoted from Officer to Corporal in 2014, and from Corporal to Sergeant in 2018, all within the Patrol Division, where he supervised several patrol squads, including the Crime Suppression Unit. While in the Patrol Division, he also served as the Volunteer Program Coordinator, Reserve Program Liaison and assisted in the Citizens Academy. In 2019, Lieutenant Guevara was transferred to the Support Services Division as the Detective Sergeant, where he supervised the Detective’s Section, the Evidence Section, the Liaison Unit, and the department logistics. Lt. Guevara holds a bachelor’s degree of Science in Criminal Justice Administration from Columbia Southern University. In 2023, he was promoted to Lieutenant in the Support Services Division.

Lieutenant Guevara has several certifications and trainings, such as AZ POST Field Training Officer, Firearms and Rifle Instructor, Defensive Tactics Instructor, Basic SWAT Training, Threat Liaison Officer Training, AXON Body Worn Camera Instructor, Pepper Ball Instructor, Physical Fitness Instructor, and Advanced Incident Command Training. Lieutenant Guevara has also written and been awarded multiple grants on behalf of the San Luis Police Department.
Lieutenant Guevara has commanded the Support Services Division and is currently the Patrol Division Lieutenant.

Alejandro Ramirez

Sergeant Ramirez graduated from the Southern Arizona Law Enforcement Training Center (SALETC) in Tucson, Arizona, and has served the community as a Police Officer for the City of San Luis Police Department since 2005. Sergeant Ramirez graduated from the Northern Arizona University and holds a Bachelor’s Degree in Criminal Justice.

Sergeant Ramirez has been assigned to different assignments during his tenure, and has been awarded the San Luis Police Department Officer of the Year, San Luis Police Department Supervisor of the Year, Exceptional Meritorious Service Award granted by the Mayor of the City of San Luis, Sunrise Optimist Respect for Law Enforcement Award, and MADD Awards.

Cesar Gaitan

Sergeant Cesar Gaitan began his law enforcement career after graduating from the Arizona Western College Law Enforcement Training Academy in 2010. He started as a patrol officer with the Somerton Police Department and was later promoted to detective with the Arizona Department of Public Safety Gang Task Force. He also served as a detective with the Arizona State Border Strike Force.
In March 2018, Sgt. Gaitan joined the San Luis Police Department, where he was initially assigned to the Patrol Division. He was later transferred to the Criminal Investigations Division as a detective. During his time in investigations, he also served as a part-time Task Force Officer with the Border Enforcement Security Task Force (BEST) through Homeland Security Investigations (HSI).
Sgt. Gaitan has held several specialized roles, including Border Liaison Officer, Terrorism Liaison Officer, and Forensic Interviewer for crimes against children. He is also a certified AZ POST General Instructor.
Currently, Sgt. Gaitan is assigned to the Patrol Division, where he supervises a patrol unit and serves as the Administrative Sergeant for the division.

Joel Sauceda

Sergeant Sauceda began his career in Law Enforcement in 1997 here with the City of San Luis Police Department. He then worked for our neighbor police departments of Cocopah Nation Police Department and the Somerton Police Department, then returning to this agency in 2003.

Sergeant Sauceda’s previous assignments have included being assigned as a Detective and a Field Training Officer. Sergeant Sauceda is a General Instructor and served as the Field Training Coordinator, the Reserve Officer Program Coordinator, and was the Citizens Academy Coordinator. Sergeant Sauceda is a graduate of the Arizona Western Collage Law Enforcement Training Academy (LETA).

Aurelio Galvan

Carlos Bermudez

Sergeant Carlos Bermudez graduated from the Arizona Western College Law Enforcement Academy back in 2019 with the high academic award. Sergeant Bermudez started his career at the Cocopah Tribal Police Department and then transferred to the Somerton Police Department. Sergeant Bermudez then joined the San Luis Police Department in 2021 where he was assigned to the Patrol Division. While assigned to the patrol division; Sergeant Bermudez was awarded with the Officer the Year, and the Life Saving Award. In 2023, Sergeant Bermudez became a General Instructor and attended the Field Training Officer School. Sergeant Bermudez joined the Field Training Officer Program where he successfully trained several officers before promoting to Sergeant.

Sgt. Bermudez is currently assigned to the Patrol Division

Ernesto Cardenas

Sergeant Cardenas graduated from Arizona Western College in 2012. He then became an Officer with the San Luis Police Department that same year. Since coming to work at the San Luis Police Department, Sergeant Cardenas has received many certifications and trainings. He is a certified General Instructor, Firearms Instructor, Rifle Instructor, less lethal instructor, High Risk Vehicle Stop Instructor, Taser Instructor, and American Red Cross Adult and Pediatric First Aid and CPR instructor. He has also received Stop the Bleed training, Drug Interdiction training. Sergeant Cardenas is a State of Arizona certified phlebotomist and Drug Recognition Expert, and a member of the SLPD Honor Guard.

Sergeant Cardenas has trained with many different agencies throughout his law enforcement career. He has worked with and received training from the United States Marshals Service, FEMA, and the Department of Homeland Security. He previously served as a K9 Unit Officer and was recognized as the 2018 K9 Officer of the Year.
Before his promotion, Sergeant Cardenas served as a patrol and canine officer to the patrol division, where he gained extensive investigative experience. In addition, Sergeant CARDENAS has completed SWAT School in Lake Havasu, Arizona.

In his leadership role, Sergeant Cardenas is a certified HGN/SFST technician/ instructor, attended the advanced DUI training course, and actively participates in DUI abatements and STEP details.

Emmanuel Aldama

Sergeant Emmanuel Aldama was born in Yuma, Arizona. Sergeant Aldama graduated from the Arizona Law Enforcement Training Academy (ALEA) in Phoenix, Arizona, and has served the community as a Police Officer for the City of San Luis Police Department since 2014.

Sergeant Aldama is a graduate of Arizona State University with a Bachelor of Science in Criminal Justice and Criminology. Sergeant Aldama’s previous assignments have included serving as a detective in the Criminal Investigation Division, a K9 handler within the Patrol Division, and a Task Force Officer assigned to the United States Marshal’s Office fugitive apprehension division.

Sergeant Aldama became a certified use-of-force analyst after graduating from the Force Science Institute. Sergeant Aldama is a Forensic Phlebotomist, a trained interviewer for sex crimes, and a current sniper within the department, and a member of the SLPD Honor Guard.

Sergeant Aldama is a General Instructor, Firearms Instructor, Rifle Instructor, Defensive Tactics Instructor, High-Risk Vehicle Stops Instructor, High-Threat Vehicle Engagement Instructor, and a Glock/Rifle armorer.

Sergeant Aldama is currently assigned to the Patrol Division of the San Luis Police Department.

Sergeant Aldama is serving in the United States Army National Guard.