Earlier quoted context omitted.
There's a similar base in the UK at Menwith Hill. They don't welcome visitors as such, but activist/comedian Mark Thomas discovered that due to a quirk in a law, it was legal to fly a hot air balloon over it. So that's what he did: http://www.youtube.com/watch?v=IBksQsAZ2hQ (short version) http://www.youtube.com/watch?v=epWTJUajIdI (full episode)
That's just simply fantastic.
He once organised a bunch of people who went to the big Apple Store on Regent Street and opened a webpage on all the devices there. The contents of said page informed readers (potential buyers) that they could get the same devices at a nearby high street retailer who didn't indulge in shady tax avoidance schemes.
Another time he went around sticking Margaret Thatcher heads on the ladies in girlie mags.