Nik Wallenda Tightrope Walks Across Grand Canyon

Sans net, harness

Aerialist Nik Wallenda completed a tightrope walk a quarter mile over the Little Colorado River Gorge near the Grand Canyon in Arizona on Sunday.

Wallenda, of the renowned Flying Wallendas, performed the stunt on a two-inch-thick steel cable, 1,500 feet above the river on the Navajo Nation.