Chula Vista Fire Station 3 on Moss Street anchors fire and emergency medical coverage for the southwestern 91911 corridor, operating within a 10-station department that fields nine engine companies, two aerial ladder trucks, and one Type I Urban Search & Rescue unit each shift. The station's first-due territory places it within rapid transport range of Scripps Mercy Hospital Chula Vista on Medical Center Drive, the secondary trauma-receiving facility for South Bay ambulance traffic. Funded through Measure P — the half-cent sales tax approved by Chula Vista voters in 2016 — the Moss Street facility replaced aging infrastructure to meet current seismic and apparatus-bay standards for modern fire service operations. CVFD's mutual-aid network integrates Station 3's response capabilities with neighboring agencies, including Bonita-Sunnyside Fire Protection District to the north, under automatic-aid agreements dispatched through the San Diego Fire-Rescue Emergency Command and Data Center. The department's 2021 transition to fire-based ambulance service added paramedic transport units to the station rotation, supplementing the existing engine-company response model with dedicated ALS crews capable of 12-lead cardiac monitoring and pharmacological intervention in the field.