That would be tough to know about Area 51's secrets and not be able to tell anyone. I doubt there are any aliens at the the base, but I'm sure there's technology that's at least 20 years ahead of what we know about.
In 1967, Lyndon Johnson accidentally revealed an airplane that was in existence. That airplane was extremely advanced for it's time and still nothing has come close to surpassing it. That plane was the SR-71 Blackbird. The Blackbird can fly at an altitude of 100,000+ feet at Mach 3.5(4,520 mph). Now, just imagine what kind of technology they have in Area 51. I know that there's an airplane called the Aurora that supposedly is very advanced, but I doubt they'll reveal that unless they need to or until other countries develop the same kind of technology.
And btw, I had hamburgers for dinner tonight aswell.
