Scott, I live in Petaluma and would like to know where you were when u witnessed this.
The SF Bay Area has some weird stuff going on. I've seen some of the most questionable things in the skies as of late. About every other night I see this strobing orb in the sky that moves back and forth and up and down. If I'm watching long enough I can see other dimmer lights going towards it....It only seems to appear when I'm thinking about it.........
These are birds. Sorry
When you have a closer look, this could be simply seagulls flying in the wind.
I don't know if this video is truthful or not but way back in 1980 I saw a very similar thing in the UK. Was quite a way off - I was on a hill looking over the city and these objects were at the far side of the city. They behaved exactly like these. I thought they were planes at first but one of them shot off at an obscure angle too fast for any plane and the other 3 just blinked out. I have always wondered about them.