A Capitol Hill Police officer guards a staircase near the hearing room 

A Capitol Hill Police officer guards a staircase near the hearing room where former CIA Director David Petraeus is testifing before the House Intelligence committee on the Sept. 11, 2012 attack in Libya, on Capitol Hill in Washington, Friday, Nov. 16, 2012. (AP Photo/Cliff Owen)
Associated Press
A Capitol Hill Police officer guards a staircase near the hearing room where former CIA Director David Petraeus is testifing before the House Intelligence committee on the Sept. 11, 2012 attack in Libya, on Capitol Hill in Washington, Friday, Nov. 16, 2012. (AP Photo/Cliff Owen)
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