We all read about the UFOs and their shape. The shape of the system means something. And when we are thinking that there are two main different types of UFOs: the saucer and cylinder. So is the cylinder-shaped thing like a cluster unit that delivers the saucer-shaped sub-crafts to the area. That thing could carry the saucers inside it. And then deliver them to the operational area. The cylinder-shaped object looks like a rocket, and it can deliver those saucers from it. The engine of that system can be modular. The saucers could have the tunnel through them. And that tunnel acts as the ion motor. The images in this text are taken from the Net, and I don't know are they real. We might think that the cylinder-shaped UFO is the carrier device for the smaller, saucer-shaped UFOs. There is a wild theory that the cylinder-shaped UFO is the Tipler cylinder. In that system, the fast-rotating plasma will make the time dilation. There is the possibility that all UFOs hav...