When the City of Chula Vista annexed the Montgomery Fire Protection District in 1986, Station 5 at 341 Orange Avenue entered the CVFD system — absorbing a 5-square-mile southwest territory and its 22,000 residents into the municipal fire-protection network. Engine 55 covers the Castle Park, Otay, and southwest Chula Vista zones from this Orange Avenue post, transporting patients to emergency departments including AFC Urgent Care Chula Vista for lower-acuity medical calls. The annexation brought the former Montgomery district's infrastructure under CVFD command, expanding the department from four to five staffed stations and extending fire-suppression and EMS coverage to one of the densest residential pockets in the South Bay. Station 5's proximity to the Chula Vista Bayfront and marina zone places its engine company within mutual-aid range of maritime emergencies coordinated by San Diego Harbor Police Chula Vista/South Bay Substation. Each front-line engine carries 500 gallons of water, Class A and B foam concentrate, a full complement of ground ladders, and Jaws of Life extrication tools rated for NFPA 1006 vehicle-rescue operations.