
About Us
The Los Angeles County Fire Department will be an exemplary organization acclaimed for our national reputation, our regional strength, and our hometown attentiveness as we provide fire protection and life safety services.
Meet Our Executive Team

Anthony C. Marrone
Fire Chief Anthony C. Marrone has been a chief officer for the past 25 years and a member of the County of Los Angeles Fire Department for 37 years. Prior to his executive appointment by the County of Los Angeles Board of Supervisors, Deputy Fire Chief Marrone recently served as Acting Chief Deputy over Business Operations and as Interim Fire Chief.

Jon O’Brien
Deputy Fire Chief Jon O’Brien has worked as a fire service professional for over 26 years. He started his career as a volunteer firefighter with the City of Sierra Madre. After graduating from high school, he completed paramedic training at the Los Angeles County Paramedic Training Institute and was hired by the City of Monrovia as a full-time firefighter/paramedic until he joined the County of Los Angeles in 1999.

Theresa R. Barrera
In her role as Acting Chief Deputy of Business Operations, Theresa Barrera oversees the Fire Department’s $1.5 billion budget and provides executive oversight of the Administrative Services, Special Services, and Prevention Services Bureaus.

Thomas C. Ewald
Deputy Fire Chief Thomas C. Ewald has served in the professional fire services for 35 years. Chief Ewald started his career as a firefighter with the City of Cedar Rapids, Iowa Fire Department in 1986. While working in the Midwest, he attended community college and completed paramedic training. Chief Ewald joined the Los Angeles County Fire Department in 1992 where he rose through the ranks serving as firefighter, paramedic, captain, battalion chief, and assistant chief.

William L. Mayfield, Jr.
Acting Deputy Fire Chief William L. Mayfield, Jr. is a 34-year veteran of the County of Los Angeles Fire Department. He began his fire service career in 1988. He has held the ranks of Fire Fighter, Fire Fighter Specialist, Fire Captain, Battalion Chief, and Assistant Fire Chief.

Vince A. Peña
Deputy Fire Chief Vince A. Peña has been with the Los Angeles County Fire Department since 1981. Chief Peña has held the positions of firefighter, firefighter paramedic, firefighter specialist, fire camp foreman, fire captain, battalion chief, assistant fire chief, deputy fire chief, and acting chief deputy.

Eleni Pappas
Born to immigrant parents who moved to the United States from Greece, Deputy Fire Chief Eleni Pappas was raised in Jersey City, New Jersey. After graduating from Saint Dominic’s Academy High School, she was accepted into the University of Southern California where she competed as a varsity rower, helping her team win the prestigious San Diego Crew Cup. She graduated with a bachelor’s degree during the civil unrest in May 1992.

Mike Tsao
As Acting Deputy Fire Chief, Mike Tsao oversees the Los Angeles County Fire Department’s Administrative Services Bureau which includes the Financial Management, Human Resources, Information Management, and Materials Management Divisions, providing critical support services to all operations.

Nick Duvally

Dennis Breshears
Deputy Fire Chief Dennis Breshears started his fire service career at the age of 23 after he was appointed to the Monrovia Fire Department on February 24, 1994

Robert Harris
Acting Deputy Fire Chief Robert Harris started his career at the age of 19 after he was appointed reserve firefighter with the City of Montebello Fire Department.
Our Mission
The mission of the Los Angeles County Fire Department is to protect lives, the environment, and property by providing prompt, skillful, and cost-effective fire protection and life safety services.
The County of Los Angeles Fire Department has a very rich and unique history, which is full of innovation, and daring accomplishments. From designing the 911 system and initiating a paramedic program in the 1970s to the current day USAR and Homeland Security Sections, our fire department is a leader and a model to fire departments around the world. Our Department’s ability to develop new techniques and equipment to fight fires of all kinds has benefited not only the residents we serve, but the fire service in general, both nationally and internationally.
Our Vision
The Los Angeles County Fire Department will be an exemplary organization acclaimed for our national reputation, our regional strength, and our hometown attentiveness as we provide fire protection and life safety services.
Our Strategic Plan is designed to address short- and long-term challenges. Download our Strategic Plan to view the road map to accomplishing our goals.
Strategic Plan Accomplishments 2015-17