That is absolutely brilliant! Reminds me of "Taken". How did you make the sign?
When the Area 51 paranoia was at it's height, you used to be able to find pics of them for download.
I even bought a t-shirt with one on in one of my drunken surfing sessions

In fact, do a google for "area 51 sign" and you'll get a sh*tload of images you could download and resize

eg:
edit for hopeless sausage finger-induced typing.