Something weird appears in the sky over Nebraska during thunderstorm

The video below shows something weird in the sky during a thunderstorm over Nebraska.

A black object stays relatively motionless in the sky when it suddenly shooting up into the sky.

Since the military has technology way ahead of our time, it is possible that they are testing a new flying device in the storm or could it be a UFO charging its batteries?

It is very odd, does anyone have a decent explanation?