Well, according to this article [1] a burglary happens every 15 seconds. I highly doubt any government agency is that efficient, but even if it did happen and you have a backup you could be back live in a couple minutes. Just like the scalability comments below allude to, the key is having the infrastructure right and then everything else is easier.
worst comes to worst, I can walk into frys and throw together something shitty. (note, I don't recommend running prod. on Fry's hardware... just saying, if you said I needed a server in two hours, I could do it.)