So I'm playing through the story on my Hunter and I came across something in the Promethean Code that could be a possible clue for another hidden exotic, say Sleeper Simulant. When walking through Bunker War-4, just before the hallway to The Mine, in the hallway with the overhanging panels you can jump onto, there's a hallway on the right side, just before a Taken hemisphere on the wall. If you go down the hallway, there's a vent but Ghost won't scan it or show it. After looking through the vent, you can see a lit hallway on the other side. Could this be an area to break into when this goes to Daily Heroic??? I've got a strong feeling it might.