According to this Wired article, the Air Force has cut the internet access to Maxwell Air Force base. The article did not explicitly say what caused the loss of internet access; I'm suspecting there were multiple reasons, and multiple failures from their security vulnerability testing.
Yep, this is what I do. I never really thought I would see this, though. I've been to a few bases where our results indicated that they should be darkened, but I never actually thought it would occur. It's interesting because I remember the Air Force was trying to deploy a "cyber command" or something like that.