Preston starts to say something else, but there's a knock at the door before someone calls out for tickets, and it slides open.

"Tickets?" the short man asks.

Preston lifts me off his bench and puts me back over on the other one. He hands the man some papers and then the two American passports. The train guy goes through the papers then shoves one into his pocket before handing Preston the tickets back.

Next I watch as he opens the passports then looks at me and then at Preston. After that, ...