US designs plane that mimics UFO's seen by Navy pilots
If you follow the square in the center of the frame you can see the craft maneuvering quickly. If the US were capable of building such a craft it would certainly be unique. This is a drawing of the theoretical spacecraft.
U.S. Navy has been granted a patent on theoretical aircraft resembling recently-reported UFOs that could bend the laws of physics to fly through water, air, and space
A technology patented by an aerospace engineer describes a 'hybrid' craft that is capable of flying at breakneck speeds in the air, water, and even space using an electromagnetic propulsion system.