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Nik Wallenda preparing for ‘death-defying’ Chicago tightrope walk

Nik Wallenda prepares for a death-defying tightrope walk between two Chicago skyscrapers, a portion of which will be blindfolded, on Sunday night. TODAY’s Willie Geist reports.

Nik Wallenda prepares for a death-defying tightrope walk between two Chicago skyscrapers, a portion of which will be blindfolded, on Sunday night. TODAY’s Willie Geist reports.