Nearly 1 million Facebook users say they are going to raid Area 51 in Nevada on September 20 in a quest to see extraterrestrial aliens.
More than 800,000 others say they are interested.
The clearly tongue-in-cheek Facebook event page is titled “Storm Area 51: They Can’t Stop All Of Us” and states “we can run faster than their bullets.”
It’s inviting users from around the world to join a “Naruto Run” into the area.
That’s a Japanese manga-inspired running style featuring arms outstretched backwards and heads forward.
The mysterious Area 51 has been the subject of conspiracy theories for decades.
Many people believe the US government stores its secrets about UFOs and aliens at the military site.