A few moments of glory for Olympic track fans.
They test their speed at a fan park ahead of one of the most anticipated races in the London games: the 100-metre sprint.
Crowd favorite Usain Bolt of Jamaica explains in his movie how he'll fend off challengers.
[clip of video SOT Bolt's voice]
A Jamaica athletics official who knows Bolt says there is a key to his success.
(SOUNDBITE) (English) JAMAICA ATHLETICS ADMINISTRATIVE ASSOCIATION EXECUTIVE BOARD MEMBER, ALFRED FRANCIS, SAYING:
"What I think he mastered is the ability to use nervous energy and he relaxes himself."
Seb Coe, a former track champion and head of the London Games, says it's experience that will push Bolt to victory over teammate Yohan Blake.
(SOUNDBITE) (English) HEAD OF LONDON 2012 GAMES, SEB COE, SAYING:
"I just sense he might know how to close this out, but Blake is a phenomenal talent we are possibly looking at Jamaica one, two, three here."
Bolt earned three world records at the Beijing Olympics, but will have to fend off Yohan Blake, a fellow Jamaican who beat him in this year's trials. And fast, qualifying Americans including Tyson Gay.
Lindsey Parietti, Reuters
