At around 8 20 tonight I saw something below the clouds move around very fast and glide above me completely silently while flashing at first a red light, then a green light and then it went dark and after a few seconds appeared behind me down the road in the distance shining a very bright white light. It moved very very fast and was definitely not a drone, I thought it was a plane at first but then it descended rapidly and turned with amazing speed. Never seen something fly like that. I was in Furbo outside Galway city. I was passing by coming from Galway city and we decided to pull in. It moved too deftly and too fast to be a plane or helicopter. It was completely silent. It was bright enough to see a mile away. I don't know what it was but I could see what it wasn't. Bad quality video: https://youtu.be/IwNvPYTyPjw It was pitch dark and I was zoomed in 100% but it still came out poor. Not very convincing I know. I actually just looked up the distance between Barna and Furbo beach. 3.5 miles. So that means this thing was so big and bright that it was highly visible in the dark from 3-4 miles away in Barna which is where we first saw it. By the time we got to Furbo it was still a half a mile away in the sky. I really doubt it's a drone at this point.