Here's that video of the
shiny ball think. I saw this as part of a tv program and it showed some military helicopters, and the guy making the video was approached by some military vehicles and was asked to leave.
So what do you think this is? Hard to tell, expecially in this film clip, but it's probably a hoax. It could be a military test of some kind. It could be a phenomenon that the military somehow knew would occur and they were observing.