Express.co.uk has been reporting on the phenomena of odd-triangular UFOs which have been spotted across the United states.
The reports are often eerily similar, leading to speculation the bizarre sightings could be REAL alien craft.
Many reports tell of a silent triangle shape, defined by a series of lights, that are said to be in some cases as big as a football field, moving slowly across the sky.
Now a top UFO expert has explained how they could be experimental craft built by the US Air Force in top secret locations like Area 51 in the Nevada desert, using technology from allegedly crashed UFOs.
There is a widespread conspiracy theory aliens do exist and visit Earth, and that they have crash landed, like during the alleged flying saucer incident just outside Roswell, New Mexico, in July 1947.
The theory claims that the government has secretly tried to recreate the technology so that it can be used to its advantage.
Steve Bassett, of Paradigm Research Group, is the only registered lobbyist in the US on the subject of alien disclosure.
Disclosure activists want to bring about an end to a so-called “truth embargo” and force the government to tell all about alien visitations of Earth.
In an exclusive interview with Express.co.uk, Mr Bassett gave his theory on the spate of triangle UFOs which has continued.
He said: “My theory that there are so many reports of triangular UFOs is that they could be ones that we have developed using reverse engineered alien technology.
“It may be that the USAF has not been able to get the anti-gravity system used in disc-shaped saucers to work in a craft of the same shape, but they can get it to work in a triangular craft so have adapted it.
“This is what I think a lot of the triangle UFOs could be – something built by humans.”
But he believes some triangle UFOs could also be extraterrestrial craft.
There have been reports of some of them being as big as a football field.
Mr Bassett added: “I don’t think they could be ours. I just don’t think we could develop anything as large as that.”
The Mutual UFO Network (MUFON), based in America, is the world’s largest organisation dedicated to alien and UFO research.
It continues to receive multiple reports of triangle UFO sightings across the states.
The US government denies that there is a truth embargo or that aliens have knowingly visited Earth and that this is covered up.