According to the Chicago Tribune, a man who attended a performance of the Blue Man Group is filing a lawsuit alleging that his esophagus was injured when a camera was forced down his throat during a 2006 show. However, Blue Man Productions insists that the entire sequence was merely a theatrical device. They explained that during the illusion, a camera is held next to an audience member's mouth. A pre-recorded medical video is then shown, giving the audience the impression that they are viewing what goes on inside the audience member's throat. The Chicago Tribune said that Blue Man Productions had not yet been officially served with legal papers.