His breathing is even. His heart rate is under control. He's maybe halfway disassociated (not that he knows the term), but that's okay, he's used to that. It's what usually happens for mission focus, and especially post-mission focus when people are just talking around him and he doesn't have to listen except for warning tones and approaching hands.

It takes him a minute to focus on Steve actually saying something, because nobody who talks like that is a threat to track. It's weird. What he says is weird, too. Stars don't have anything to do with mission focus. That doesn't make sense.

He tries, though, because he's an obedient Asset. Most of the time, anyway. It's easier when he is, and it's a harmless enough order. It's hard, though. Stars don't belong. They aren't right. They don't. Fit. Though he keeps his breathing an expression under control, his heart rate's going up. That's the safest sign of stress, anyway, because usually nobody's paying attention to his pulse.