United States’ Carmelita Jeter reacts as she crosses the finish line to win the women’s 4 x 100-meter relay during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Friday, Aug. 10, 2012. The United States relay team set a new world record with a time of 40.82 seconds. Anja Niedringhaus / AP (via http://www.miamiherald.com/2012/08/10/v-gallery_detail_list/2945476/us-women-smash-world-record-in.html)