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McKayla Maroney

July 31, 2012 / 5:50 PM EDT / CBS News

Mc Kayla Maroney of the United States stands on the podium with her silver Olympic medal following the Artistic Gymnastics Women's Vault final on Aug. 5, 2012 in London. — Getty Images

McKayla Maroney of the United States stands on the podium with her silver Olympic medal following the Artistic Gymnastics Women's Vault final on Aug. 5, 2012, in London.

Ronald Martinez/Getty Images

McKayla Maroney of the United States celebrates her performance on the vault in the Artistic Gymnastics Women's Team final of the London 2012 Olympic Games at North Greenwich Arena on July 31, 2012. The teen (born in December of 1995) is the 2011 World Vault Champion and a member of the gold medal-winning U.S. Olympics team.

Ezra Shaw/Getty

The U.S. Gymnastics women's team of (from left) Gabrielle Douglas, Alexandra Raisman, McKayla Maroney, Jordyn Wieber and Kyla Ross are announced at HP Pavilion on July 1, 2012, in San Jose, Calif. They are the first American women gymnasts to claim the gold in 16 years.

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From left, Mc Kayla Maroney, Jordyn Wieber, Gabrielle Douglas, Alexandra Raisman and Kyla Ross of the United States celebrate after winning the gold medal in the Artistic Gymnastics Women's Team final of the London 2012 Olympic Games on July 31, 2012.

Ronald Martinez/Getty Images

From left, Jordyn Wieber, McKayla Maroney, Kyla Ross, Alexandra Raisman, and Gabrielle Douglas of the United States listen to Martha Karolyi, the team coordinator ,during training sessions for artistic gymnastics ahead of the 2012 Olympic Games at Greenwich Training Academy on July 23, 2012, in London.

AP Photo/Bullit Marquez

USA's gymnasts, from left, Jordyn Wieber, McKayla Maroney, Sabrina Vega, Alexandra Raisman and Gabrielle Douglas, celebrate on the podium winning the women's team final at the Artistic Gymnastics World Championships in Tokyo, Oct. 11, 2011.

AP Photo/Gregory Bull

McKayla Maroney competes on the uneven bars during the final round of the women's Olympic gymnastics trials, July 1, 2012, in San Jose, Calif. Maroney was named to the U.S. Olympic gymnastics team.

149584643.jpg_6.jpg — Ronald Martinez/Getty

Mc Kayla Maroney of the United States looks on as she is introduced in the Artistic Gymnastics Women's Team final of the London 2012 Olympic Games at North Greenwich Arena on July 31, 2012.

149576054.jpg_5.jpg — MMANUEL DUNAND/AFP/Getty

Gymnast Mc Kayla Maroney performs on the vault during the women's team final of the artistic gymnastics event of the London Olympic Games on July 31, 2012.

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McKayla Maroney competes on the balance beam during the Senior Women's competition of the Visa Championships at Chaifetz Arena on June 8, 2012, in St. Louis, Mo.

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McKayla Maroney performs during the women's vault final at the World Gymnastics Championships in Tokyo on Oct. 15, 2011. Maroney won the gold medal.

148345791.jpg_2.jpg — Ezra Shaw/Getty

McKayla Maroney competes on the balance beam during the 2012 U.S. Olympic Gymnastics Team Trials at HP Pavilion on July 1, 2012, in San Jose, Calif.