On September 28, 2013, Corliss made a jump called the flying dagger. He jumped out of a helicopter wearing a wingsuit and then flew through a narrow crack in Mount Jianglang in China. The fissure is approximately 60 feet across at the top, 15 feet across at the bottom, and over three football fields tall. After safely completing the jump, Corliss was quoted saying that it was ...the single gnarliest thing I've ever done... and I have never experienced anything so hardcore. Period. I have not been that scared in my life. It was so powerful and overwhelming. I started crying...