San Bernardino, Orange, Los Angeles, Riverside
Mutual Threat Zone
One of the first Mutual Threat Zone communications plans that was put in place was the SOLAR plan. SOLAR is an acronym that stands for San Bernardino, Orange, Los Angeles, & Riverside.
The SOLAR comm. plan is the result of the communications difficulties that were experienced during the 2008 "Freeway" fire that destroyed or damaged 314 homes primarily in Anaheim Hills and Yorba Linda. Because of those difficulties, The CAL FIRE San Bernardino Unit, Los Angeles County Fire, Orange County Fire Authority, and CAL FIRE Riverside County Fire Department have worked to develop a specific communication plan for utilization in that four corner area that is of concern to everyone.
Here is a video produced by LACoFD showing how the SOLAR plan is used.