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SOCHI, RUSSIA - MARCH 08: A general view of the Paralympic agitos is seen as Wilhelm Brem of Germany competes in the men's 7.5km visually impaired Biathlon during day one of Sochi 2014 Paralympic Winter Games at Laura Cross-country Ski & Biathlon Center on March 8, 2014 in Sochi, Russia. (Photo by Mark Kolbe/Getty Images)

SOCHI, RUSSIA - MARCH 08:  A general view of the Paralympic agitos is seen as Wilhelm Brem of Germany competes in the men's 7.5km visually impaired Biathlon during day one of Sochi 2014 Paralympic Winter Games at Laura Cross-country Ski & Biathlon Center on March 8, 2014 in Sochi, Russia.  (Photo by Mark Kolbe/Getty Images)

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SOCHI, RUSSIA - MARCH 11: Olena Iurkovska of Ukraine competes in the Women's 10km - Sitting during day four of Sochi 2014 Paralympic Winter Games at Laura Cross-country Ski & Biathlon Center on March 11, 2014 in Sochi, Russia. (Photo by Mark Kolbe/Getty Images)

SOCHI, RUSSIA - MARCH 11:  Olena Iurkovska of Ukraine competes in the Women's 10km - Sitting during day four of Sochi 2014 Paralympic Winter Games at Laura Cross-country Ski & Biathlon Center on March 11, 2014 in Sochi, Russia.  (Photo by Mark Kolbe/Getty Images)

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15 Mar 2002: Ragnhild Myklebust #39 of Norway competes in the 10K sitski event during the Salt Lake 2002 Paralympics at Soldier Hollow in Heber, Utah. DIGITAL IMAGE Mandatory Credit: Matthew Stockman/Getty Images

15 Mar 2002:  Ragnhild Myklebust #39 of Norway competes in the 10K sitski event during the Salt Lake 2002 Paralympics at Soldier Hollow in Heber, Utah. DIGITAL IMAGE Mandatory Credit: Matthew Stockman/Getty Images

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Olympic Paralympic athlete German Verena Bentele during an interview in Munich, Germany. (Photo by sampics/Corbis via Getty Images)

Olympic Paralympic athlete German Verena Bentele during an interview in Munich, Germany. (Photo by sampics/Corbis via Getty Images)

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SOCHI, RUSSIA - MARCH 08: Vitaliy Lukyanenko of Ukraine collapses after competing in the Men's 7.5km Visually Impaired Biathlon during day one of Sochi 2014 Paralympic Winter Games at Laura Cross-country Ski & Biathlon Center on March 8, 2014 in Sochi, Russia. (Photo by Ronald Martinez/Getty Images)

SOCHI, RUSSIA - MARCH 08:  Vitaliy Lukyanenko of Ukraine collapses after competing in the Men's 7.5km Visually Impaired Biathlon during day one of Sochi 2014 Paralympic Winter Games at Laura Cross-country Ski & Biathlon Center on March 8, 2014 in Sochi, Russia.  (Photo by Ronald Martinez/Getty Images)