"When we land," said Brown, raising his voice against the engines, "customs officers drive out to the plane. They come aboard, say hello, I hand them the passports, they open them, hand them back, say goodbye. An aircraft like this, that’s what happens. Our passport numbers, and the pilot’s, went through when he filed our flight plan. Don’t behave as though you’re expecting them to ask you any questions." The plane began to taxi.