This email just came in, about 2:30 PM:

just had two young men run through my year from the Altadena Crest Trail with three b-b guns between them. They had been firing them and stopped on my  driveway to reload. I asked them to leave (which they did after reloading…no hurry to do so). Then found two more hiding on our property line (the trail) obviously looking to shoot the other two. I called the sheriff, but beware of being outside. I don’t know where these kids are firing these things.

The first two young men were tall and thin, white, wearing black T’s and black baggy shorts. I only saw one of the others (wearing a red T shirt) because they were hiding from me when they saw me.