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Maroney

U.S. gymnast McKayla Maroney performs on the vault during the Artistic Gymnastic women's team final at the 2012 Summer Olympics, Tuesday, July 31, 2012, in London. (AP Photo/Gregory Bull)

McKayla Maroney falls during vault final

McKayla Maroney's spectacular vault performance helped the U.S. win gold in the women's gymnastics team final but she faltered during the individual vault competition.