Motivated by the missing person case that's going on right now (see article before this one), I called up the SD County Sheriff's office, and yes there is already a program for people who want to volunteer with their Search and Rescue group at various levels (varying from administrative to rescuer to almost-deputized.)
They certainly seem to have an outstanding record to be proud of, but there is still the slight problem that whoever wrote the text on their main page doesn't seem to understand separation of church and state (at the bottom of this page). Kind of a bummer to think they would want to exclude non-religious San Diegans from helping their neighbors.
Park (3.129 miles/ 5.000 km)
10 minutes ago