Google Maps Getting Blurred?

I have been searching on Google Maps, and they have been blurring out some of the parts of the map. Usually they are blurring out the parts of government. The only one that i've seen that hasn't been blurred out is Area 51. Why wont they blur out Area 51? It is part of the government right? I thought so. So I guess Area 51 isn't importanat anymore. It just shows hagers and a landing strip and a few other things but not much.
Picture From Here