A police officer stands guard in Cartagena, Colombia, Thursday, April 12, 2012. Leaders of the western hemisphere will attend the 6th Summit of the Americas in Cartagena on April 14 and April 15. (AP ... more 
A police officer stands guard in Cartagena, Colombia, Thursday, April 12, 2012. Leaders of the western hemisphere will attend the 6th Summit of the Americas in Cartagena on April 14 and April 15. (AP Photo/Fernando Vergara) less 
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Associated Press | Photo By Fernando Vergara
Fri, Apr 13, 2012 4:04 AM EDT