Unknown over Plano, TX

The report, as filed

At approximately 9:40PM on 05/21/2019, I observed a very unusual light, while looking north from my Apartment Complex in East Plano, TX. To provide background, to the north of my apartment is a major thoroughfare of Aircraft flying West toward DFW Airport and Love Field in Dallas, TX. I often smoke outside in the evenings and have seen all types of crafts, usually easily determining that they are Commercial Aircraft. On THIS occasion, the light was different. First, the light was White and moved about half-way across the entire horizon from East to West. It moved at a MUCH higher rate of speed than any plane. There were planes in the distance to compare to. Suddenly, it Stopped. No slowing, as if a plane was turning… it just Stopped. It proceeded to move directly Upward at a high rate of speed, and then back Downward at a slower rate. This is definitely not any maneuver that can be performed by modern aircraft. It was also quite a distance away. My guess would be 10+ Miles North of me, possibly near McKinney, TX, but it is hard to determine . The light was Solid White to begin with, then began to flash, and then turned a solid Red. The flashing was Extremely Bright for something that far away. I ran inside to get my Cell Phone to record the light. When I came back out, the light was still there, and came above the horizon (so, it couldn’t be a drone… too far away.) It continued to flash and then moved directly Upward. It then moved to the East toward an Airplane that was flying East to West. It seemed to mirror the speed of the plane, but was lower on the horizon. Again it stopped. The color changed to a Red from White, and it dimmed by a large amount. The Light then became bright again and moved back to the West. I continued to watch the light until it went below the Horizon. I see planes flying in this sky on a DAILY basis… and always keep an eye out for anything weird… this is the FIRST TIME I have ever seen anything like this. I don’t know WHAT is was, but the movements were not something I had ever witnessed, nor do I believe that the maneuvers could have been completed by any craft with our technology. I DID video what I could, but my footage is grainy, and I’m not a good Camera-Man. I do narrate what I am seeing. In any case, here is a link to the Video: https://www.dropbox.com/s/huc2bl3elvlg3j5/0521192142.mp4?dl=0

Held as-reported from National UFO Reporting Center (record NUFORC #146140). Witness text is preserved verbatim, including its spelling; nothing is edited beyond formatting.