President Barack Obama walks across the tarmac to board Air Force One 

President Barack Obama walks across the tarmac to board Air Force One before his departure from Andrews Air Force Base, Md., Wednesday, Sept., 26, 2012. Obama is traveling to Ohio for a day of campaign event. (AP Photo/Pablo Martinez Monsivais)
Associated Press
President Barack Obama walks across the tarmac to board Air Force One before his departure from Andrews Air Force Base, Md., Wednesday, Sept., 26, 2012. Obama is traveling to Ohio for a day of campaign event. (AP Photo/Pablo Martinez Monsivais)
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