This should come as no surprise to anyone at all really. I'm not all up in the tinfoil hat, but our government has always kept secrets from us.
Where I grew up as a kid there was some kind of secret air force radar installation. We all knew it was there growing up. Where I lived in San Ramon, California, there was a missile base.
And son of a bitch, last year I discovered there is a missile silo on my street a mile from my house - It was shut down thirty years ago, but it's still there.
Here's a screen shot from the air:
And a picture of it being built in the 1960s:
Makes you wonder when you discover it's a mile from your house.