UFO appeared over Yellowstone

The UFO flew over the Yellowstone volcano, a bright white ball was fixed by a surveillance camera hovering over the Yellowstone caldera as it slowly moved from right to left.
The light seems to be pulsating and at some point it is so strong that it reflects off the ground from a height of about 40 meters.
The video was filmed by webcams that control Yellowstone on December 14. Many of the watched videos expressed concerns that the appearance of a UFO could be a bad sign, indicating a rapid eruption of this super volcano.