Explain the encounter between Langdon, Sophie and Teabing and the police at the airport.

At the airport, the police scramble to meet the plane as it came to a stop inside the hanger. Teabing emerges from the plane to talk to the authorities. He insists that he is leaving in his limousine with his butler, Remy. He also insists that his plane is not to be searched without his permission. The inspector ignores him and boards the plane. Except for the pilot, the plane is empty. Teabing leaves in his limousine without incident. What the police do not know is that before they arrived, Remy, Langdon, and Sophie, carrying the monk, quickly left the plane before it had made its full turn in the hanger and had gotten inside the limo.