One time I went up to my local mountain lookout to do some night time photography. It was very dark and I was using long exposure.

During one of the photographs a huge white flash occurred. I turned around and couldn't see anything. It made no sense because I was up on a mountain, and the silent lightning appeared to come from above and behind me.

There wasn't even a cloud in the sky in any direction and it wasn't my camera flash because it was during a long exposure and I was looking at the camera. The photo I took came out over exposed even though it was the same length of exposure I had been using all night.

Don't think I will ever know what it was, but I've always suspected that it's probably something in similar to nature to what the article talks about.