U.S. cyclist Lance Armstrong smiles during a press conference for the 2005 Discover Channel team in Silver Spring. Six-time Tour de France winner Lance Armstrong of the U.S. smiles during a press conference formally announcing sponsorship for the 2005 Discovery Channel Pro Cycling Team in Silver Spring, Maryland, January 10, 2005. Following a nine-year sponsorship agreement with the United States Postal Service, the only American professional cycling team ever to win the Tour de France begins its new global partnership with Discovery Communications. REUTERS/Jason Reed