Erratic flying. It was far away from me, an airplane flew under it coming into airport. In the end it shot straight up in the air and disappeared. I had stopped filming before that. I was having dinner with my partner. I noticed a black object way off in the distance, hovering. Then it started to move in the sky erratically.
At first I thought it was a balloon, but I realized a balloon goes with the wind and this was doing anything but going with the wind. It was black and appeared to have some kind of pulse to it. It was moving all over the sky - no airplane or drone could do that and a drone that far away, I wouldn't even see. I stopped filming because my arm was getting tired, but continued to watch.
A plane flew under it, and then it suddenly shot straight up in the air faster that anything I could imagine. Literally, less than 2 seconds and it was gone straight up.