During production, the actors playing the crew and the passengers of the flight were put in separate hotels from the actors portraying the hijackers, even eating their meals separately, ostensibly to create an air of antagonism in the film between the two groups. The set itself was built so that it moved the way the actual flight did. During the filming, many of the actors actually got hurt, and the blood visible on their faces during the revolting scene is authentic and not fake.