Daredevil 'Jetmen' took a step closer to achieving human flight as they soared through Tianmen Cave in a jaw-dropping stunt in China. The stunt was a part of 'Mission: Human Flight' - a programme that aims to achieve 100 percent autonomous human flight. Both men were equipped with a carbon fiber wing powered by four mini-reactors. Jetmen will continue to wow the crowds across the world throughout the year as part of the Expo 2020 Dubai.