"What the hell're you--?" At least he's talking. Though Firo wasn't really prepared to hear it like this--words like he's angry but his voice like he's not. It's a weird little puzzle; why can't he just yell if he's so mad?

Firo follows behind him, shoulders squared. Perhaps he's done wrong, but he's not going to hide from it. "If I disagree with your command, I'm gonna tell you."

And why does he want him 'far enough away'? He clenches his fists. "Look, if you want me to fuck off, just say so. But I can't promise I'd listen to that either--somebody's gonna have to pull you outta the next machine you fall in."