Gen. Martin Dempsey, chairman of the Joint Chiefs of Staff, right, greets Senate Armed Services Committee Chairman Carl Levin, D-Mich., left, as he appears before the committee for a hearing to ... more 
Gen. Martin Dempsey, chairman of the Joint Chiefs of Staff, right, greets Senate Armed Services Committee Chairman Carl Levin, D-Mich., left, as he appears before the committee for a hearing to consider his reappointment to the military's highest post, on Capitol Hill in Washington, Thursday, July 18, 2013. Sen. John McCain, R-Ariz., said he will block Gen. Dempsey's nomination for a second term as Joint Chiefs of Staff chairman due to his dissatisfaction with the officer's responses to questions about the potential use of U.S. military power in Syria. (AP Photo/J. Scott Applewhite) less 
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Associated Press | Photo By J. Scott Applewhite
Tue, Jul 23, 2013 1:07 PM EDT