CENTENNIAL, CO - AUGUST 21: Members of a hazardous materials team wear protective suits as they head into Republican presidenti CENTENNIAL, CO - AUGUST 21: Members of a hazardous materials team wear protective suits as they head into Republican presidential candidate John McCains campaign office August 21, 2008 in Centennial, Colorado. A threatening letter containing white powder was received at the suburban Denver office, prompting several workers to go to a hospital on their own, though no injuries were reported. (Photo by John Moore/Getty Images) | |
