All three were veteran deputies. The department has not said what they were doing at the time or what caused the explosion.

The San Bernardino County Fire Department is considering upgrading their emergency response vehicles by acquiring state of the start technology that would allow them to respond even more quickly.

For Emergency Alert Notifications, visit San Bernardino County Sheriff Department. Evacuation information from Cal Fire Evacuation Warnings Potential threat to life and/or property.

Maps show where several wildfires are burning across the Inland Empire, including the Wolf Fire and the Juniper Fire, in Southern California.