After proving to be a useful soldier, you were transferred over to Task Force 141.

As you get set up in the barracks, there's a knock at the door. You turn around to see a man standing in the doorway. It must be Roach, from what you've heard. The man who was assigned to show you the ropes.

He didn't say anything, but he nodded down to your bag that you were halfway through unpacking, presumably asking how you're getting on with it.