Newly declassified information actually contains the first official acknowledgement of Area 51 by the government along with information on just exactly what was going on behind closed doors. Area 51 is mentioned many times in the documentation and is also shown in a declassified map (shown above).
The primary use of Area 51 according the the newly released history was, no surprise here, to test out secret US government projects, but more interestingly, the declassified history points out the secretive development of the U-2, a high-altitude reconnaissance aircraft used by the CIA and USAF to gather intelligence. The documents go into great detail and include information like the names of pilots, code names, locations, inter-govermental co-operation details, cryptonyms and more.
Unfortunately, for those who are awaiting acknowledgement of extraterrestrial life, you will have to wait a little longer. There are clearly no references to knowledge of alien life forms, but there is a ton of awesome, once highly secretive and classified information that’s now available to the public.
You can read the history of the U-2 project at the official National Security Archive website. The site contains many images, maps, videos and even offers up some highlights from the documentation, it’s definitely worth a look.