Triangle over North Highlands, CA

The report, as filed

It was very easy to make out the shape of the craft due to the backdrop of the sky being many shades lighter, almost a dim blueish black color, than the craft. It was amazing how slow and low this thing was flying. I thought for sure it must be a plane or drone of some sort but looked around in the sky and could actually see other planes flying around much further away and looked nothing like this craft in comparison. The triangle was not very large, maybe 10-12ft wide, about the size of a king size matress or medium sized vehicle. It was moving very slowly and gracefully, almost making small S turns but at a very slow rate of speed, maybe 3 to 8 MPH. The triangle was flying very low, only about 20-40ft off the ground, I could tell that was the altitude because it was just slightly above the light poles and building that werent much lower than it was which were only about 100 yards away from where I saw it. As it flew slowly from Sount to North towards McClellan, one of the 3 lights slowly went out and stayed off for about 1.5 second and then started to come back on as another light started to extinguishing. The triangle craft continued its S turns and lights alternating until it flew back behind the building that I first orginally noticed it heading north towards. Keep in mind all this happened in a matter of 15 seconds or so, I have never seen anything odd like this in my life so the details of the peculiar nature of this craft made quite an impact on me. It's too bad I was so fixated on the craft and what it was doing that I didnt think to take a picture since this was so close and vivid in the sky, there is no way it wouldnt have shown in fairly good detail, especially with how good low light cell phone cameras have gotten. Anyway, just thought I would share what I saw. I suppose it could of been a drone of some sort but if it was, its unlike any drone iv ever seen before or anything that I could even find after doing a little research. I dont even think a drone would be able to fly as slow and as smooth as this craft was flying. There was no jerky movement or momentum, no changes in speed or trajectory. It was like it was able to effortlessly flutter through the air as if gravity wasnt there. Regardless, it was definitely a UFO, alien or otherwise.

Held as-reported from National UFO Reporting Center (record NUFORC #149376). Witness text is preserved verbatim, including its spelling; nothing is edited beyond formatting.