We are the Maricopa County Sheriff's Posse, a group of volunteers. Basically we are "almost a Reserve Deputy." There's more information here:
http://www.posse.net
The Maricopa County Attorney, Andrew Thomas, is a good conservative and very much supportive of these efforts, unlike the last guy, who often feuded with the Sheriff.
I'll be on this detail on Sunday. I suspect we will mostly supply extra eyes and ears for the sworn Deputies, rather than conducting actual arrests, but you never know. As always, I'm happy to do my part to assist county law enforcement. If you ever get the chance to be a law enforcement volunteer, I highly recommend it.
Sheriff Joe is one terrific law man! Will give serious consideration to moving to Maricopa county when I retire.