It’s no secret TikTok is a Chinese-developed app used as a video sharing platform globally, primarily popular among teens. What may be a secret, however, is a United States fighter jet program that might have just been compromised by TikTok.

Disclose TV reports, “a mysterious and potentially ‘secret’ U.S. test design has been revealed on TikTok, the Chinese teen video sharing platform.” Twitter user Ruben Hofs explained the ordeal on Twitter:

“Coincidentally, this morning I stumbled upon a very interesting tiktok video of an unknown shape on a flatbed trailer. The scaffolding in the background got my interest and this appears to be the Helendale Radar Cross Section Facility…” @RubenHofs wrote alongside photos and the video, in which someone in the background can be heard questioning, “What the f*** is that?.”

The video: pic.twitter.com/Unhq9lsHwE

— Ruben Hofs (@rubenhofs) September 22, 2021

Disclose TV noted the Facility is in the Mojave Desert, not far from Lockheed’s Skunk Words facilities at Plant 42 in Palmdale, California. “Was the video leaked online by accident or on purpose? Is it genuine or faked? Nobody knows but it resembles the NGAD concept, the next-generation fighter jet program of the U.S.” reports Disclose TV.