Derek's eyes widen a little as if to try to emphasize his point as he shakes his head. "No. No, I don't. I don't want to see who's up and what they're doing; what if we get caught and arrested for treason?!" He looks and sounds as incredulous as he is at the moment. Doesn't Buffy see the potential for Very Bad Things to happen to them if they're not especially quiet and constantly vigilant? Doesn't she understand that it's better just to go on the defense than the offense right now, in a place they still don't know very well?

There's still no one behind them in spite of the fact that he keeps hearing someone behind them and it makes him especially uncomfortable, but he moves forward because Buffy does. Mostly because, even if he'd never admit it to her because it's so weird for him to genuinely feel like this, but...Derek's kind of scared right now.

Buffy turns a corner quickly and kicks her leg out but Derek winces for her when it makes contact with the wall rather than anything else. "Ouch...what'd you do that for?"