[He jerks when he suddenly manages to wake this man, and he goes from asleep to hyperactive in about three seconds.]

Oh. Actually-- it's me, I said that.

[He points to himself helpfully, the smile evident in his voice even if his helmet is incapable of changing expressions.]

I'm really sorry, I didn't mean to wake you up. It's just-- you were asleep on me, and I need to put this book back.