Battlestations: Pacific Easter Egg - The Developers Are Gods

Alright, this might possibly be the only easter egg in Battlestations: Pacific, and the second egg I've found by myself in my life :]
Go to Battle 10 in the Japanese Campaign (Attack On Sydney I think). Now, get into the harbor, and if you look at your tac-map, you should see 2 routes up North. Take the left one. Go all the way to the end, then you should see a cave at the end. Enter the cave.
"I feel the presence of the gods." Enjoy the egg. Looks like even the Japanese thinks the developers are gods.