Garett S. Sugimoto

Laboratory Director

Garett Sugimoto received a Bachelor of Science degree in Biology from UC Santa Barbara in 2010 and a Master of Science degree in Forensic Science from Fresno State in 2012. He also graduated from the ATF's National Firearms Examiner Academy in 2021. He served as a Forensic Laboratory Technician, Criminalist and DNA Technical Lead Criminalist before being promoted to Assistant Laboratory Director in 2023 and ultimately Laboratory Director in 2025. He has casework experience in DNA Analysis, Biological Screening, Firearm Analysis, Shoe and Tire impressions, and Crime Scene Response.

David Zimmerman

Assistant Laboratory Director

David Zimmerman received a Bachelor of Science degree in Chemistry from California State University, Stanislaus in 2009 and a Master of Science degree in Chemistry from the California State University, Fresno in 2013. He served as a Criminalist and a Supervising Criminalist before being promoted to Assistant Laboratory Director in 2025. He has casework experience in the Toxicological Analysis Unit which includes Forensic Alcohol Analysis and Breath Alcohol Instrument Calibration.