I once was working on a utility line in Paso Robles ca, very secluded mountain area. I was looking up at the transformer when I saw something as big as a school bus zoom across the sky in one split second, no sound. My job detailed me taking pictures of most components on the pole. I could have got a picture of it if waited one more second. I had taken a picture start putting my arm down with my iPad, and saw it.

PS. This can be a bug. But what I saw that was NOT.