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It's unknown how many of the 1.5 million Facebook attendees would actually travel to the remote location in Nevada for the event, as the page has sparked Internet memes poking fun at the idea of storming the Air Force range for the opportunity to see aliens.

The Air Force did investigate UFOs under Project Blue Book from 1947 to 1969, but the project was headquartered at Wright-Patterson Air Force Base in Ohio, not at the range in Nevada.

me and the boys on our way to sneak in Area 51 to save the aliens pic.twitter.com/1gfWjC6xHR

— Michael Scott 📚 (@michaelgclump) July 14, 2019

Project Blue Book concluded that none of the UFOs investigated were a threat to U.S. national security and there was \"no evidence indicating that sightings categorized as 'unidentified' were extraterrestrial vehicles,\" according to the Air Force.

The project's findings are available in the National Archives for public review.

He’s training to free the aliens at Area 51... pic.twitter.com/5oz1Q5rUZ6

— Guy (@apiecebyguy) July 15, 2019

Earlier this year, the Navy updated its guidelines for how its pilots report the sighting of \"unauthorized and/or unidentified aircraft\" due to an increase in the number of reports in recent years.

\"There have been a number of reports of unauthorized and/or unidentified aircraft entering various military-controlled ranges and designated air space in recent years,\" Joseph Gradisher, spokesperson for Deputy Chief of Naval Operations for Information Warfare, told ABC News in May.

Me and my new pals when I bust them outta Area 51 👽👽👽#Area51 pic.twitter.com/cFJrq7ILHr

— trafficlightsandwich (@LightSandwich) July 15, 2019

\"For safety and security concerns, the Navy and the [U.S. Air Force] take these reports very seriously and investigate each and every report. As part of this effort, the Navy has updated and formalized the process by which reports of any such suspected incursions can be made to the cognizant authorities,\" he said.

Gradisher added that senior Naval intelligence officials and aviators \"who reported hazards to aviation safety\" have briefed congressional members and staff in response to requests for information.

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