Sightings of a black triangle-shaped UFO.
A large, silent triangle with lights in each corner...
"A circular,plasma filled accelerator ring,called the Magnetic Field Disruptor surrounds the rotatable crew compartment."
You see it produces anti-gravity:
"The MFD generates a magnetic vortex field that disrupts or neutralizes the effects of gravity on mass within proximity by 89 percent...The mass of the circular accelerator, and all mass within the accelerator, such as the crew capsule and the nuclear reactor, are reduced by almost 90%. This causes the effect of making a vehicle extremely light and able to outperform and outmaneuver any craft yet constructed--except, of course, those UFOs we did not build. The TR-3 is a reconnaissance platform with an indefinite loiter time. "Indefinite" because it uses a nuclear reactor for power."
So now you know.
If you want to read more spurious physics: http://www.rense.com/general5/trb.htm