Sneak Peek! Discovery Channel's 'Life on a Wire'

The new Discovery Channel show "Life on a Wire" shows how Nik Wallenda, with the help of his legendary acrobatic family, The Flying Wallendas, create spectacular acts that cheat death through science, skill and discipline.

The success of any of Nik's acts -- and, indeed, his very life -- depends on meticulous preparation that includes engineering and wind speed analysis conducted with a crew led by his chief engineer (his uncle Mike), and his safety coordinator (his father, Terry).

This past weekend, Nik and his mother Delilah made headlines around the world as they successfully walked a high wire in Puerto Rico -- a walk that infamously killed Nik's great grandfather Karl in 1978.

Check out this clip!

A sneak peek at "Life on a Wire" will premiere Wednesday, June 22, at 10:00 PM on Discovery Channel. Don't miss it!