[If it were Jack giving him instructions he'd follow them immediately, partially because he knows Jack always comes back and partially because first and foremost he's always been his boss. Now he wastes juts enough time to say,] Don't get hurt.
[Its not much but it means more, like he really cares if something does happen. Then he's off, staggering towards the apartment. It's Chuck's building and he's been here before so he remembers where the door is, makes it there and waits just inside, holding it open, not going a single step farther until Spike is here, too.]