Black triangle with circular shapes underneath, no lights and sounds
In August 2008 me and my friend were watching an outdoor show on Sentosa Island, Singapore. I think it was after 2030hrs. It was my friend's first visit to Singapore and as a joke he commented how amazing Singapore was as it even has its own UFO (he doesn't believe in UFOs then and now).
I looked up and sure enough there was a triangle UFO. It was flying high enough not to be noticed unless you happen to look up. My first thought was to look for evidence that it was of this world (airplane engine noise and navigation lights) However, there were none of these things as it flew very slowly over our heads But as it was directly over our heads I could see a series of circular shapes underneath the surface of the UFO.
I still review that night on my mind. I always wondered about that UFO whether it was a military aircraft or something else.