Some believe the above photo shows a top secret U.S. Air Force vehicle - The TR-3B Black Triangle - performing maneuvers over Belgium. According to rumors, the TR-3B uses an advanced gravity-defying propulsion system partially derived from reverse-engineered alien technology. The outer coating of the TR-3B is reactive to electrical stimulation and can change color, reflectivity, and radar absorptiveness, allowing the TR-3B to 'disguise' itself as a small aircraft.
In the center of the the TR-3B is a circular, plasma-filled accelerator ring called the Magnetic Field Disruptor (MFD). The MFD rotates at 60,000 rpm, generating 250,000 atmospheres and neutralizing the effects of gravity by 89 percent. This makes the TR-3B extremely light and maneuverable. See more photos and get additional info here(1).