A police officer guards an entrance as U.S. Republican presidential nominee Senator McCain (R-AZ) arrives to a rally at the Technology Creativity Manufacturing in Bensalem

 
A police officer guards an entrance as U.S. Republican presidential nominee Senator McCain (R-AZ) arrives to a rally at the Technology Creativity Manufacturing in Bensalem
A police officer guards an entrance as U.S. Republican presidential nominee Senator John McCain (R-AZ) arrives to a rally at the Technology Creativity Manufacturing in Bensalem, Pennsylvania October 21, 2008. REUTERS/Carlos Barria (UNITED STATES) US PRESIDENTIAL ELECTION CAMPAIGN 2008 (USA)