I have seen some weird stuff in my life time. When you go without sleep three, sometimes five, days weird stuff starts happening. In my mind I drove through a bunch of barricades in a construction zone once. Another time I drove right through an eighteen wheeler loaded with bails of hay. I knew that I hadn't really done it but the perception was ..... well... weird.
Then there was this time I saw a round object traveling really fast up in the sky. UFO right? After all it was unidentified. Doesn't mean alien though does it? Later while contemplating it, I realized, with the cloud movement, traffic speed on the highway, the wind speed and lack of depth perception because of where it was in regard to everything else, it could have been, most likely was, a helium filled balloon
There are a few times I have seen those high altitude weather balloons early in the morning. Those are really bright against the pre-sunrise sky.