Even before their first event, the US teams' actions are newsworthy. From SI:
Summary: after the cyclists arrived at the Beijing airport wearing breathing masks (issued, apparently, by the USOC), the following transpired:
The USOC made sure the cyclists understood this breach of guest etiquette by scolding them to tears, eliciting an official apology from Michael Friedman, Sarah Hammer, Bobby Lea and Jennie Reed: "Following our arrival on Tuesday, we offer our sincere apologies to BOCOG, the city of Beijing, and the people of China if our actions were in any way offensive. That was not our intent. ... We deeply regret the nature of our choices. Our decision was not intended to insult BOCOG or countless others who have put forth a tremendous amount of effort to improve the air quality in Beijing."
Sad that concern for one's own health needs to be subverted for "proper" appearances - talk about a bad taste in your mouth. Makes me want to pass on watching any of it.