Hold #2 is where the 2 screens are, and the soldiers change position depending on which screen is being used. The screen on the right is the one that will have the "ghost" appear on it (it is actually an image of Hideo Kojima).
I just kept taking pictures of that screen until the "ghost" appeared. It took about 10 attempts before I got a photo of it.
Questions, corrections and neg vote justifications below.