I was taping a vulture in Pine AZ at 8:24 am . Behind it, some kind of trail was wizzing at an unbelievably fast rate, in the background. The clip is 4 secs. I slowed it way down, and can’t tell what was going. At times, it looked to be going back and forth. In a still, it looks like a cylinder, kind of cartridge like object, is in the stream. Clips available on request.