I also don't understand why this episode wasn't shown in it's proper order. It made everything so confusing. And given how few fans the show has, you'd think they network wouldn't jerk us (or new viewers) around by showing episodes out of order, throwing off storyline continuety.
Blair: We'll never succeed. We may as well die here.
Dan: No, no. We have already succeeded. I mean, what are the three terrors of the Airport? One, the flame spurt - no problem. There's a popping sound preceding each; we can avoid that. Two, the lightning sand, which you were clever enough to discover what that looks like, so in the future we can avoid that too.
Blair: Humphrey, what about the R.O.U.S.'s?
Dan: Rodents Of Unusual Size? I don't think they exist.
Blair: You are sure nobody's follow' us?
Dan: As I told you, it would be absolutely, totally, and in all other ways inconceivable. No one in Guilder knows what we've done, and no one in Florin could have gotten here so fast. - Out of curiosity, why do you ask?
Blair: No reason. It's only... I just happened to look behind us and something is there.