The holder of half a dozen world records will walk across the Grand Canyon on a steel cable with nothing but the Little Colorado River 1,500 feet below on June 23. With no tethers or safety nets, the walk will be the highest tightrope attempt ever for the 34-year-old, at a height taller than the Empire State Building. Last year, Wallenda, a seventh-generation member of the “Flying Wallendas” family of acrobats, became the only person to walk a wire over the brink of Niagara Falls. Photo: Nik Wallenda walks across a tightrope 200 feet above U.S. 41 on January 29, 2013 in Sarasota, Florida. (Photo by Tim Boyles)

The Air2 (Air Squared) floating Bluetooth speaker from Axxess CE is displayed at CES Unveiled, the opening event for the media preview days at the 2015 Consumer Electronics Show, January 4, 2015 in Las Vegas, Nevada. The speaker which levitates over its own base is one of the winners for the CES Innovation Awards and is patent pending. (Photo by Robyn Beck/AFP Photo)

A participant in the Downtown Parade kicks off the Houston Livestock Show and Rodeo in Houston, Texas, US on February 25, 2023. (Photo by Reginald Mathalone/NurPhoto/Rex Features/Shutterstock)

Team GB’s Katarina Johnson-Thompson in action during the women’s heptathlon shot put, where she recorded a personal best at the Paris 2024 Olympic Games at Stade de France in Saint-Denis, north of Paris, on August 8, 2024. (Photo by David Levene/The Guardian)

Madison Chock and Evan Bates of the United States skate during the Ice Dance, Free Dance program of the 2025 ISU World Figure Skating Championships at TD Garden in Boston, Massachusetts, on March 29, 2025. (Photo by Geoff Robins/AFP Photo)

Graduating cadets throw their hats in the air in celebration during the commencement ceremony for graduates of the U.S. Air Force Academy in Colorado Springs, Colorado, U.S., May 30, 2024. (Photo by Kevin Mohatt/Reuters)

A British RAF Typhoon aircraft escorts a C130 transport plane on its way to Jordan for an airdrop of paratroopers from the U.K.'s 16th Air Assault Brigade as part of an exercise conducted jointly with Jordanian soldiers on Wednesday, June 23, 2021. (Photo by Petros Karadjias/AP Photo)

A member of p*ssy Riot performs in the nationwide Women's March, held after Texas rolled out a near-total ban on abortion procedures and access to abortion-inducing medications, in Austin, Texas, U.S., October 2, 2021. (Photo by Evelyn Hockstein/Reuters)