Mysterious Aircraft Flies in Circles, then Plummets

Occurred on January 8, 2019 / Sioux Falls, South Dakota, USA

Info from Licensor: "I took this video somewhere near 41st and Kiwanis in Sioux Falls, SD. I just looked up in the air and saw a object leaving a jet trail and making a circular motion. Finding this odd, I took 5 seconds of video, then parked the car and took the 34 second video. The object at the end of the longer video then destructed and broken to pieces and fell with a shimmer and flash. Either the sun hit a mirror like surface or it was a small strange explosion. What's more, it's as if the debris banished in front of my eyes. I was unable to see any remnants past when I first saw it break apart."