Ok. I'm bored so I'll bite.
About 20 years ago, my family and I were driving from Edmonton to Calgary. Near Airdrie, Alberta, the sky turned ominous. The clouds were low and unusually brown. When I looked to the west I saw shimmering in the sky. There were two faint, almost parallel lines going from the clouds to the ground. The shimmer was between these two lines.
Suddenly, a pile of dust flew into the air from a farmer's field. It was like a bomb had been detonated in the field. I stopped the car and watched.
I realized that I was watching a tornado. It wasn't a particularly big one. The odd thing was that it didn't look like any tornado I'd ever seen before on TV. You could easily look through it.
I took several pictures with my camera. Imagine my surprise when the developed pictures came back. The shimmering transparent tornado was solid dark in the photos. It looked like the classic tornados I'd seen on TV.
The lesson to me was that a camera may see things that a human eye can't.
It seems that the spectators saw nothing unusual. It was only when the video was examined that something showed up.
Maybe there were atmospheric reflections from the Chilean planes. *shrug*
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I've only ever seen a sun dog once. It was a circular object 'following' the plane I was in. It was clearly an atmospheric phenomena and not a UFO, but at the time I had no clue what it was. It would vanish and then reappear. The plane was flying straight so the sun dog position was constant. I don't know what would have happened if the plane had banked.
http://en.wikipedia.org/wiki/Sun_dog
Sun dogs are more prevalent when wet airplane contrails form ice crystals.
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I don't know if either of these experiences are possible explanations for what was on the Chilean videos. Often there are explanations for UFO sightings that aren't obvious until researched thoroughly.
I remember one video of a UFO taken from a plane window.It wasn't a fake. It turned out to be a visual anomoly casued by the design curvature at the very edges of the plane window pane.
Cherish what is most important in your life - family and loved ones.