California-08-12-08-I was taking survey pictures of the land around my house and this disc thing, though only for a few seconds, was up and around my neighbor's orchard.
I took a pictue when it was about 600 yards in the air above an irrigation ditch. I thought it was just a bird diving down, then it went back up and around, then down, and it looked like a metal alloy like silicon.
I felt almost hyptotized.
source and references:
MUFON Submitter 12188
Archived UFO Articles and News Items, 2008
UFO Casebook Home Page