Arthur T Knackerbracket has found the following story [cnet.com]:
The FAA wants to keep the skies clear above Area 51.
As rural Nevada prepares for Alienstock [cnet.com] -- a music festival born of a joke Facebook event to storm Area 51 -- the Federal Aviation Administration is closing down airspace above the classified area where some believe the government is hiding evidence of extraterrestrial life.
In two NOTAMs (for "notice to airmen") Friday and Monday, the FAA issued "temporary flight restrictions for special security reasons," banning aircraft in the vicinity. The coordinates given are for areas south [faa.gov] and west [faa.gov] of Rachel, Nevada, including the the US Air Force's Nevada Test and Training Range. One ban runs Sept. 18-23, and other runs Sept. 19-23.
Area 51 has long fascinated those who think the government knows more about alien life than it's letting on. The bans come just days before a crowd of unknown size will descend on the nearby town of Rachel, situated on what's been dubbed the Extraterrestrial Highway, with roughly 50 residents, no gas station and no street lights.
Alienstock stems from a Facebook event intended to be a meme page, urging folks to meet up in Rachel and storm Area 51 to "see them aliens." After racking up more than 2 million RSVPs [cnet.com], the organizers have been working to turn it into an actual event, that's now scheduled for Sept. 20-22.