No one has yet satisfactorily explained to me why it is that John McCain, having been born on a US Military base in Panama, can be considered a "natural born citizen", yet Constitutional protections do not apply on a US Military base in Cuba because it's not US soil.

Now there's this.  Apparently, Kennedy Airport is no longer technically a part of the United States.

So my advice is, no matter where you live, make sure your passport is up to date.  You never know when you're going to find your location declared outside the US and you'll need the passport to get back in.