The signature of President Barack Obama is seen on the gas tank of a motorcycle that is for sale for the Fisher House Foundation charity at the Hardcore Choppers display during the Stars & Stripes & ... more 
The signature of President Barack Obama is seen on the gas tank of a motorcycle that is for sale for the Fisher House Foundation charity at the Hardcore Choppers display during the Stars & Stripes & Spokes event at RFK Stadium Saturday, May 28, 2011 in Washington. Motorcycles of all types are in Washington for Rolling Thunder events during the Memorial Day weekend. less 
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Associated Press | Photo By Alex Brandon
Sat, May 28, 2011 6:20 PM EDT