PHILADELPHIA, PA - SEPTEMBER 22: Former U.S. Secretary of Defense Dr. Robert M. Gates (C) is greeted the audience before receiving the 2011 Liberty Medal at the National Constitution Center September... more 
PHILADELPHIA, PA - SEPTEMBER 22: Former U.S. Secretary of Defense Dr. Robert M. Gates (C) is greeted the audience before receiving the 2011 Liberty Medal at the National Constitution Center September 22, 2011 in Philadelphia, Pennsylvania. Gates as a widely respected leader who has built a legacy of defending freedom, promoting effective diplomacy and supporting American troops around the world. (Photo by William Thomas Cain/Getty Images) less 
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Getty Images | Photo By William Thomas Cain / Getty Images
Thu, Sep 22, 2011 9:04 PM EDT