A horse and rider cast a shadow during a training session at Greenwich Park, the site for the equestrian and modern pentathlon events for the 2012 Summer Olympics, Wednesday, July 25, 2012, in ... more 
A horse and rider cast a shadow during a training session at Greenwich Park, the site for the equestrian and modern pentathlon events for the 2012 Summer Olympics, Wednesday, July 25, 2012, in London.The city will host the 2012 London Olympics with opening ceremonies scheduled for Friday, July 27. (AP Photo/Markus Schreiber) less 
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Associated Press | Photo By Markus Schreiber
Wed, Jul 25, 2012 11:52 AM EDT