A security official uses a duster to wipe down the presidential limousine in front of a row of Marine CH53E Super Sea Stallion helicopters shortly before President Barack Obama arrives on Air Force ... more 
A security official uses a duster to wipe down the presidential limousine in front of a row of Marine CH53E Super Sea Stallion helicopters shortly before President Barack Obama arrives on Air Force One Thursday, May 8, 2014, at Marine Corps Air Station Miramar in San Diego. Obama is scheduled to attend a political fundraiser during his brief stopover in San Diego. (AP Photo/Gregory Bull) less 
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Associated Press | Photo By Gregory Bull
Thu, May 8, 2014 4:15 PM EDT