On the multiplayer level called Zanzibar, When you look at the fan in the center from the entrance, there is a platform up to the right. Get to it and shoot the black mounting piece. Another platform will fall and you will be able to get to the center of the fan. Now go inside the building and you will see a spinning motor at the top. Make your way up to the top and activate the panel. when you activate it use a scoped weapon and zoom onto the screen and read the easter egg. (2x-5x preferred)