[He develops a tiny frown and gives his head a single subtle shake when she's sharp with him. It's not that he minds it... things like that pass over him like water most of the time... so much as that he doesn't want her to misunderstand.

He seems much more sober and serious than he had a few minutes earlier.]

Among other things, it's that if someone else got in enough trouble on a planet, there are situations in which they might be able to sell you out, and they might make the choice to do so.