Nine
As the door opens he peeks inside and finds a small room with a bed, a wardrobe, a small desk and a chair. Practical furniture, quite spartan in style. At the end of the room an open door leads to a bathroom. Nothing moves, and Nine gestures for Faust to wait outside. There's not much space, and he doesn't want to get shot by accident if a roach comes from under the bed.
He moves inside and this time it's not his years in the Army that come to mind, but his experience as an investigator, when he learned that what's missing sometimes is more important than what can be seen. And everything else is missing here.
Nine carefully advances checking under the bed, inside the wardrobe and each drawer on the desk. All empty but for a thin layer of dust. He lifts the mattress and moves the furniture. Still nothing. The bathroom proves equally devoid of anything, not even a toothbrush. Before leaving the room he checks the walls. No damage, no marks left by paintings or wear.
Coming out he announces to the party. "Clear! Striped bare. Whoever left this room had time to pack everything, which is quite a different story from all we saw until here, with gunfight, bodies and abandoned things." He closes the door and moves toward the large desk where Robin and Charlie are looking with attention to the terminal. "All the others had trouble, but this Overseer clearly had time to plan his move and no resistance. Can't be sure what that means but..."
Nine stops, being close enough to read the message left by the Overseer. He reads, and reads again. "Head for Sanctuary? How we are supposed to know where that Sanctuary is? And what is the Institute?"
Hearing Robin's question, he scratches his head for a second. "University Point... They are probably speaking about Columbia Point, in Dorchester, Southeast from Downtown. Massachusetts University is there, and it forms a peninsula out from the mainland into Dorchester bay, with Old Harbor Park on the north side... I don't see why we would go there, but let's keep that warning in mind."
However Nine fully agreed with the "Leave the vault" part. He was getting tired of that artificial light, together with the dust that filled the air every time they moved, not to mention the several body bags that brought him bad memories. "Let's see if there's more information and then get ourselves out of here, shall we? What else you found, Robin?"