Your flight could be diverted, with all the disruption that involves: in February, after a brawl broke out aboard a Ryanair flight from Luton to Bratislava, the plane diverted to Berlin and six men were arrested. And last week another half-dozen men were arrested in Bali when their flight from Sydney to Phuket was diverted due to another drunken brawl. But as well as the nuisance factor there are safety issues. Disruption in the cabin creates danger for everyone: distracting the crew from their normal safety duties, and causing a real hazard in the event of an emergency evacuation, when every passenger needs their wits about them.