The clip shows the body of some futuristic aircraft at Lockheed's Helendale Radar Cross Section Facility.
The footage, which first appeared on Twitter around two weeks ago, was posted up by user Ruben Hofs who claimed to have found it on TikTok.
It shows a black aircraft body of some kind being towed outside a prominent Lockheed facility.
"Coincidentally, this morning I stumbled upon a very interesting TikTok video of an unknown shape on a flatbed trailer," Hofs wrote. "The scaffolding in the background got my interest and this appears to be the Helendale Radar Cross Section Facility."
"Also, this does not seem to resemble the so-called polecap used for calibration purposes. So if it isn't that, then what is it...?"
Some users questioned how the footage came to be, given that it must surely be difficult to get within such close range of a secretive aircraft being towed around in broad daylight.
The original creator of the clip remains unclear.
Jeff Babione, general manager of Lockheed's Skunk Works arm, was even asked about the video during a recent Defense One interview but refused to comment on it.
So could this really be evidence of some secretive aircraft being developed at Lockheed or is it perhaps simply a common component of some existing vehicle that it has in production ?
You can view the clip for yourself in the video below.