Â Â Â Could most UFO sightings be caused by advanced anti-gravity military aircraft? According to Military.com, a website for U.S. military members, anti-gravity technology may be right around the corner. The aircraft displayed in their video is labeled the TR-3B. The aircraft is triangle-shaped, can move at incredible speeds and is difficult to be detected by radar. Sightings of this unit are increasing all around the globe. . . .