The strict no-hand luggage measures imposed on UK air travelers following the arrest of 24 individuals suspected of a plot to blow up transatlantic flights is wreaking havoc with touring orchestras accustomed to carrying their instruments on board. Members of the Bolshoi Theatre’s orchestra, in the waning days of a summer residence in London, will likely have to travel home by rail to avoid risking damage to their instruments, which cannot safely be stowed in a plane’s cargo hold. Meanwhile, at least two American orchestras (Pittsburgh and Minnesota) will be kicking off European tours which include stops in the UK within the next week, and organizers are scrambling to make contingency plans.