Flying Saucers was designed by male scientists working for the Secret Service. When the Secret Service was first created it was so secret nobody knew it existed. I watched this male scientist on tv say that he knew what the flying saucers were in pictures and videos because he helped design it. He showed a small model of a saucer that he had worked on and showed how it flies. The reason why flying saucers light up is because of the huge amount of energy that it uses and what kind of energy it uses and this energy makes it rise from the ground to straight up into the air. When you watch the video of this demonstration, it all starts to make sense.
Their is very old black and white footage of many flying saucers flying around unsuccessfully in the desert when it was first being worked on. Before one of the scientists who helped create flying saucers died awhile back, he told a friend of his "You would not believe what they are working on in the desert....its years ahead of our time. I'm guessing a bunch of the flying saucers moving around very quickly in the sky that was caught on video and being discussed heavily in the media not too long ago is what the scientist was talking about.
As far as the triangle ones go that have been mistaken as UFO's, they have already been proven to be the new aircrats that are that shaped.