Later, Five would have no objection to drawing out a detailed diagram of the whole system for him, and have zero difficulty in doing so, if he really wanted her to. Right now though she knows is probably not the best time.

Still. He asks a legitimate question, one that she can answer, and a smile pulls at the corner of her lips for a second before she does.

"Well, the air's not moving all the time, so sometimes they're pretty much just tunnels. But it can get uncomfortable if you're in them for a while and the hot or cold is pumping through, yeah."