Command Staff

Chief Sean Grayson

Sean Grayson is the 8th career Fire Chief to the serve the City of Rialto. Chief Grayson started his fire service career as a Firefighter in 1994. He worked as a Firefighter/ Paramedic, Engineer, Captain and Battalion Chief in the Bay Area of Northern California before coming to the Rialto Fire Department in 2014. In 2015 he was promoted to Division Chief of Operations for the Rialto Fire Department and in 2017 he was promoted to Fire Chief. Chief Grayson has a Bachelor’s degree in Business Administration and a Master’s degree in Executive Fire Service Leadership. He is a graduate of the National Fire Academy’s Executive Fire Officer (EFO) program and is an internationally designated Chief Fire Officer (CFO) through the Center for Public Safety Excellence Commission on Professional Credentialing

Division Chief Brian Park

Brian Park started his time with the Rialto Fire Department in 1997 as a Crafton Hills College Paramedic student while working at the Barona Fire Department as a firefighter/EMT in San Diego County. He became the first full-time firefighter/paramedic at Barona upon completing the Crafton Paramedic Program, where he also attended their Fire Academy. Brian was hired as a full time firefighter/paramedic with Rialto in 1999, promoted to the Rank of Fire Captain in 2007 and Battalion Chief in 2012. He has an Associate’s Degree in Fire Science from Columbia Southern University and he has completed the requirements for Chief Officer through California State Fire Training. Under his current position of Battalion Chief, Brian oversees programs such as Apparatus, Training, Technical Rescue, Active Shooter, Specialty Equipment, and Fire Investigations.

Battalion Chief Cory Cisneros

Cory Cisneros started his Fire Service career in 1995 with San Bernardino County Fire Department then leaving for West Covina Fire Department where He spent the last 17 years prior to coming to Rialto Fire Department.Cory has worked through various ranks and assignments during his career. Ranging from Firefighter, Firefighter/Paramedic, Fire Captain, Training Officer, Recruit Coordinator, and Senior Instructor. He also is a member of CALFIRE Incident Management Team 5 (Type-1) and holds numerous Overhead/Single Resource qualifications and responds to All-Hazard Incidents throughout the Western United States. Cory is a graduate of Los Angeles Fire Department Leadership Academy and holds a Bachelor of Science degree in Fire Science Administration from Waldorf College. He also is a graduate of Crafton Hills Paramedic and Victor Valley College Fire Academy programs. Currently, He is certified as a Fire Officer and Chief Officer through California State Fire Training.

Battalion Chief, Craig Hauenstein

Craig Hauenstein started his time with the Rialto Fire Department in 1997 as a Crafton Hills College Paramedic student while working at American Medical Response, (AMR) in Glendale. After completing Paramedic school he worked full time as a Paramedic for the Palm Springs division of AMR. Craig Hauenstein spent the next six years teaching as an adjunct instructor for the Crafton Hills College EMT and Paramedic programs. Craig completed the Fire Academy in 2002 and was hired by the Rialto Fire Department in May of 2003 as a full time firefighter/paramedic. Craig promoted to the rank of Fire Captain in 2011 and Battalion Chief in 2019. He has an Associate’s Degree in Fire Science and Emergency Medical Services from Crafton Hills College, he has also completed the requirements for Company Officer and Chief Officer through California State Fire Training. Craig is also an instructor for the State of California in the areas of Confined Space, Auto Extrication, Firefighter Survival, and RIC Operations

EMS Coordinator, Joe Powell

Assistant Fire Marshal Kerri Rodriguez

Kerri began volunteering with the fire department December 2002. In August 2004, Kerri was hired as a full time code enforcement officer in the Rialto Police Department. In March 2005, Kerri returned to the Fire Department as an inspector. In January of 2013, she was  recruited as Assistant Fire Marshal Duties include: new construction inspections, annual and business license inspections, coordinating plan review, and overseeing the apartment inspection program.

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