Changing over Denver, CO

The report, as filed

Was sitting on 9th floor balcony facing to the E/SE and looked up because a plane from DIA (which is about 25 miles to the NE) was heading south shortly after take off and I heard the engines and was just trying to see the plane, but as I looked I also noticed two objects which at first I thought looked like large pop-up tents because of the odd shape and just figured that they might have been swept up in the wind (wind was not very strong, otherwise I wouldn’t have been out there). Then I thought maybe they were pieces of large trash or tarps that might have been swept up, again the wind was not strong. They continued to float, changing shape, like it was tumbling over and as it tumbled it began changing from black to a bright shining silver that was reflecting the sun. There was no sound. They continued to float from the NE/E to the W/SW towards the Rocky Mountains. When I first noticed them I was worried the plane that I had originally looked up to see might run into them, but the plane began to bank to the SE and the objects continued W/SW. As they continued to they began going more to the SW and they gained thousands of feet in altitude. I was able to keep eyes on them for at least 5 minutes as they continued to change from black to reflective silver. I estimate they were about 40+ miles away and 20,000+ ft in the air when I noticed a third shining object with them. They didn’t seem to be in formation and the was a good amount of distance (miles at the very least) between them. I did eventually lose sight of all 3 of them. A few minutes passed and one more came directly over my building and was undulating and was not a solid shape, had the same floating appearance, again no sound, and moved S/SW from the north in the same direction as the previous objects. It did begin changing from black to shining silver and back again, they all did this but didn’t seem to be an exact timing to the color changing. It gained altitude and mileage until I lost sight of it at least 5 mins after it flew over my building). Too slow to be a plane or helicopter and was not a balloon just based on the size (I’m guessing maybe a large van to maybe even a school bus). Doubt it was a drone either because of the lack of sound and the size and distances traveled vs speed and time. I’d estimate it was at least 40-50+ miles to the SW by the time I lost sight of it over the Rampart Range. My balcony faces south and I can see Pikes Peak from my balcony and I know it is roughly 60 to 70 miles to my south and the Rampart Range is to the north of Pikes Peak. The sun was rising from the east and was not over head yet that time in the morning. Skies were blue with a few high scattered white clouds, temperatures where probably in the mid to high 80s, slight breeze from the N/NE. I have an American flag flying from my balcony railing so that is how I know how the wind was acting, it was sort of my wind sock for the event.

Held as-reported from National UFO Reporting Center (record NUFORC #170202). Witness text is preserved verbatim, including its spelling; nothing is edited beyond formatting.