Nik Wallenda's wife performs stunts from helicopter

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Performing death-defying stunts runs in the Wallenda family.

Nik Wallenda's wife, Erendira, performed amazing acrobatic acts at the Charlotte Motor Speedway Sunday.

Wallenda hung from an aerial ring attached to a helicopter, sometimes by her feet, all without the assistance of a harness or safety device.

The Sarasota daredevil performed the stunt prior to the start of the Bank of America 500 race.