President Barack Obama greets people waiting for him on the tarmac as he arrives on Air Force One at Rickenbacker International Airport, Sunday, May 5, 2013, in Columbus, Ohio, en route to speak at ... more 
President Barack Obama greets people waiting for him on the tarmac as he arrives on Air Force One at Rickenbacker International Airport, Sunday, May 5, 2013, in Columbus, Ohio, en route to speak at the Ohio State University spring commencement. (AP Photo/Carolyn Kaster) less 
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Associated Press | Photo By Carolyn Kaster
Sun, May 5, 2013 1:00 PM EDT