Yunidis Castillo of Cuba reacts after she won her women's 100-meter T46 heat at the 2012 Paralympics games, Tuesday, Sept. 4, 2012, in London. (AP Photo/Alastair Grant)

Britain's Eleanor Simmonds swimms to exit the pool after competing at a women's 50-meter S6 freestyle heat at the 2012 Paralympics, Tuesday, Sept. 4, 2012, in London. (AP Photo/Lefteris Pitarakis)

The padded hands of Diane Roy of Canada are seen as she waits to compete in the women' 800-meter T54 heat at the 2012 Paralympics games, Tuesday, Sept. 4, 2012, in London. The hands are padded to giver her protection as she pushes her wheelchair round the track. (AP Photo/Alastair Grant)

Netherlands' Mirjam de Koning-Peper hugs United States' Victoria Arlen as she celebrates after winning the women's 50-meter freestyle S6 final at the 2012 Paralympics, Tuesday, Sept. 4, 2012, in London. (AP Photo/Lefteris Pitarakis)

China's Gu Xiao Fei celebrates taking silver in the men's -82.50kg powerlifting event during the medal ceremony at the 2012 Paralympics, Tuesday, Sept. 4, 2012, in London. (AP Photo/Kirsty Wigglesworth)

United States' Tanner Gers competes in the men's long jump F11 at the 2012 Paralympics in London, Tuesday, Sept. 4, 2012. (AP Photo/Emilio Morenatti)

Canada's Summer Ashley Mortimer competes at a women's 100 breaststroke S10 heat at the 2012 Paralympics, Tuesday, Sept. 4, 2012, in London. (AP Photo/Lefteris Pitarakis)

Xu Qiuping of China competes in the women's shot put F37 final at the 2012 Paralympics games, Tuesday, Sept. 4, 2012, in London. (AP Photo/Alastair Grant)

Carlee Beattie of Australia takes off her metal prosthetic arm after running in her women's 100-meter T46 heat at the 2012 at the 2012 Paralympics games, Tuesday, Sept. 4, 2012, in London. (AP Photo/Alastair Grant)

Spain's Xavier Porras makes a jump in the men's long jump F11 category during the athletics competition at the 2012 Paralympics, Tuesday, Sept. 4, 2012, in London. (AP Photo/Matt Dunham)

Gold medalist China's Mi Na prepares to throw in the women's shot put F37 category during the athletics competition at the 2012 Paralympics, Tuesday, Sept. 4, 2012, in London. (AP Photo/Matt Dunham)

Tatyana McFadden of the United States with celebrates after winning her heat of the women's 800-meter T54 heat at the 2012 Paralympics games, Tuesday, Sept. 4, 2012, in London. (AP Photo/Alastair Grant)

Britain's Prince Harry, center, talks to an Australian athlete, name not available, as he joins members of the TeamGB to watch the morning session of the swimming competition at the 2012 Paralympics, Tuesday, Sept. 4, 2012, in London. (AP Photo/Lefteris Pitarakis)