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'Unidentified: Inside America's UFO Investigation' Season 2 Episode 2: 'We have seen black triangles', say fans

The second episode of History's 'Unidentified' sees Chris Mellon investigate the famed Black Triangle sightings that have been prominent since 1986

Spoilers for 'Unidentified: Inside America's UFO Investigation' Season 2 Episode 2 'The Triangle Mystery'

The second episode of History's 'Unidentified' sees Chris Mellon investigate the famed Black Triangle sightings that have been prominent since 1986. He meets with veteran army and navy men who have recorded sightings along with the renowned author, David Marler, who dishes out intriguing details about the triangle UFOs. The episode did have its share of buzz on Twitter as there were a few fans who claimed they had indeed seen the triangle objects hovering in the sky.

"Yes! My first sighting was one of those giant triangles so this should be interesting," a fan wrote. "I saw one of these in Sedona years ago," another fan tweeted. "My ex and his brother saw a triangular UFO, pitch black, silent, a light on each point. This was here in NC, somewhere between Fayetteville and Lillington while driving on a back road. He also has an air force background. #Unidentified," read another tweet. 

The most prominent appearances of these triangles were witnessed by the residents of Hudson Valley and Illinois. They were shown to have a low altitude and a mild humming low-frequency rumble. One of Mellon's witnesses, who asked for his identity to be kept anonymous, provided photographic evidence. He also added that these objects appeared to be mapping the region. "Could triangular UFOs be 'mapping' United States terrain and if so wouldn’t this pose a national security risk?! Fascinating #Unidentified," a fan asked

"I've seen a lot of UFO shows, and I mean a lot. I have to say Unidentified on History is very well produced. Military cases are some of my absolute favorites. #ttsa #ufo #ufos #uap #unidentified," a fan remarked. Some fans were happy with the concrete evidence that was showcased. "@ChristopherKMe4 @TTSAcademy Excellent episode. The amount of evidence being presented is overwhelming. #Unidentified@HISTORY."

"Nice. (Got some archived news footage from local news stations around the country that have had stories on these.... - talkin the strange large ones I mean...." a fan opined. "Anyone else seen a isosceles shaped black triangle, ~100-150ft long, 'thick appearance', silent outside of a 'humm' as passes over, and very unique 'lights' that can move to represent/ change visual OVERALL shape? ie lights formed L shape at first then changed to C as passed over," recollected another.

The case of the Black Triangles still remains one of those unanswered questions.

'Unidentified: Inside America's UFO Investigation' Season 2 airs on Saturdays at 10 pm ET on History.