Nik Wallenda, the 'King of the High Wire,' is back performing his family's most famous and dangerous stunt, the seven person pyramid. The same stunt seriously injured five members of his family in February when they plunged 30 feet to the ground. "My sister broke every bone in her face," Wallenda said. But that’s not putting him off. He performed the stunt at the Big Apple Circus in New York City.