'AGT': Howie Mandel gives Golden Buzzer to 11-year-old discovered singing in studio audience The brothers invited the judge onto the stage to try out the stunt himself, which Cowell accepted. Well, he didn't have to imagine much longer. 'What you do, I can only imagine how scary it is,' he said.
One duo of contestants, a pair of brothers, started off their 'very, very dangerous' act by throwing knives at each other, which narrowly missed and landed in walls directly behind them.