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Gymnastics Vault Needs 'Speed, Explosive Action'
U.S. gymnast McKayla Maroney took the floor on Tuesday to tackle the event that can make or break Team USA in just a fraction of a second. It's the vault. And Maroney has the approval of the man who's been on the mat for so many memorable vault moments — Bela Karolyi. Audie Cornish asks Karolyi about the pivotal moments that can make or break success in the event.