I was working and as I go back into a building I looked up and,seen a plane. And it stopped me dead in my tracks, not because I knew it was a drone but because it didn't flow naturally. Normal a plane goes from point a to b. This one didn't. It's hard to explain but it was very different and noticeable enough for my conscious mind to stop me and gaze. It looked to be still and close but I heard no noise and it's lights were very strong not bright but strong. It wasn't a fading red or blue it was a deep red and blue. It also didn't fly like a plane kind turned this way and that. I live in a populated are, Dfw, and I just found,this odd and had to share.