But now potential candidates are being offered the chance to work at Area 51 after posting its first ever job advert.
However the successful applicant will need to have one very important qualification before being considered because the vacancy is for a pilot.
AECOM, a private defence contractor, is looking for a new first officer pilot to carry out top-secret flights for the only airline allowed in and out of the rural destination.
The planes are operated by the US Air Force and are plain white with a red band down the side and don't carry any company logos.
They're often referred to as Janet Airlines, as in Just Another Non Existent Terminal, due to the fleet's call sign.
According to the job posting, the candidate will need to have security clearance and adhere to the procedures of the federal government.
They'll also need to be willing to live in the Las Vegas area – as they'll be ferrying people between Las Vegas McCarran International Airport and the military base.
He or she will be expected to order changes in fuel supply, load and route and must have a minimum of 3,000 fixed wing flying hours within the past five years.
And if all that wasn't enough the money may be what clinches it because, according to salary research site Glassdoor, the average wage for a pilot at AECOM is $80,454 (£63,000) a year.
Located 100 miles north of Las Vegas in Nevada, Area 51 it is classified as a US military installation.
The patch of fenced off land, measuring six by ten miles, is tucked between a US Air Force base and an abandoned nuclear testing ground.
For years the US government denied it even existed, but in 2013 the CIA officially acknowledged its existence and its location was revealed.
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