It’s Sept. 20 — which means it’s the big day for followers of the “Storm Area 51” raid that’s been percolating since earlier this summer. And the attendees of the viral-Facebook-event-turned-Alienstock-music-festival are not disappointing. They’ve come prepared with signs and plenty of support for the supposed extraterrestrial questions that make the military base of Area 51 such an intriguing mystery to many. Millions of people RSVPed to the original Area 51 raid, but those that have made the final trek to the small, remote desert town of Rachel, Nevada are the true diehard alien enthusiasts.