London Olympics: 100 Days Out

2008 Olympic gold medalists Bryan Clay (center) and Allyson Felix (right) were part of a U.S. contingent that invaded Times Square on April 18, celebrating 100 days out from the London Games.

Julie Zetlin hopes to win the U.S.' first medal in rhythmic gymnastics.

Olympians past and present, celebrities and New York bystanders enjoyed the festivities in Times Square.

Donald Trump inspects a fencing foil next to Olympian Tim Morehouse.

Actor Brian d'Arcy James meets with Olympic volleyball hopefuls Jess Gysin, Jennifer Fopma, Whitney Pavlik and Christal Engle.

Fencers James Williams (left) and Dagmara Wozniak duel. The 16-member U.S. fencing team is set for the London Games.

World indoor high jump champion Chaunte Lowe gives a demonstration of her Fosbury flop.

Women's boxing is an Olympic sport for the first time this year. Marlen Esparza is one of the three U.S. hopefuls.

Sitting volleyball players compete on a makeshift surface. The London Paralympic Games take place from Aug. 29 to Sept. 9.

Matt Lauer interviews U.S. swimming superstar Missy Franklin. Franklin, 16, won five medals at the 2011 world championships and may surpass that total in London.

The Today Show 's Natalie Morales attempts to clear a hurdle as Jason Richardson looks on. Richardson, 26, was the surprise world champion in the 110-meter hurdles in 2011.

Trampoline has been part of the Olympics since 2000. Alaina Williams hopes to bring home the U.S.' first medal in the event.

Legendary Olympic gold medalists Carl Lewis, Greg Louganis and Shannon Miller address the crowd in Times Square.

Sammy Lee was the first Asian American to win Olympic gold. Lee, now 81, won back-to-back platform diving titles in 1948 and 1952.

Field hockey player Maren Langford boards the Road To London double-decker bus. The U.S. women's field hockey team bowed out in pool play in 2008, but it defeated world No. 2 Argentina for the 2011 Pan American Games title.