Kings of Leon were forced to postpone a sold-out show at London's O2 arena Tuesday night after a fire destroyed two of their tour buses. The fire started on one of the buses and quickly spread to the other, according to a report from the BBC. At least 60 firefighters were brought in to fight the fire and six people were reportedly treated for smke inhalation. A spokesman said the show will be rescheduled, but didn't specify when that might be.