U-shaped UFO recorded over Halifax, Nova Scotia, Canada. This happened on 21st December 2019.
Witness report: Horseshoe object meets contrail anomaly and later disintegrates. Observed large black cube shaped object in sky from highest vantage point in my city. Immediately pulled over and started filming. Object was moving very slowly left towards long contrail type anomaly which didn’t appear to be natural. Was forced to leave the area due to frustrated residents. Crossed the road and continued filming. Object had now morphed into a sideways horseshoe shape and had made contact with the contrail anomaly. A small protrusion stuck out from the dark object into the contrail anomaly which casted a very long shadow. Had to leave to pick up a delivery. Returned approximately 20 minutes later to find a dark horseshoe shaped cloud as if the object had dematerialized. I took pictures of this as well.