Area 51

The U. S. Government has finally officially acknowledged it has a "secret" base in the high desert of Nevada, in a place known as Area 51, where it tests classified, high performance aircraft.

Of course, even though the base has never been on any public maps, it hasn't been secret for years.  UFO researchers have made Area 51 famous, an icon of late twentieth century pop culture.  Satellites have imaged the base, as have individuals using long range cameras from nearby mountains.  The issue has not been whether the base exists, but what goes on there.  Some UFOlogiss claim alien technology is tested there, perhaps with the help of live aliens.  The government denies that.  Of course, the government would deny that.....