U.S. Capitol Police guard a door to the restricted area where former CIA Director Petraeus is testifying, at Capitol Hill in Washington

 
U.S. Capitol Police guard a door to the restricted area where former CIA Director Petraeus is testifying, at Capitol Hill in Washington
U.S. Capitol Police guard a door to the restricted area where former CIA Director David Petraeus is testifying, at Capitol Hill in Washington November 16, 2012. Petraeus will testify Friday about the attack on the U.S. diplomatic mission in Benghazi, Libya, but also is expected to be asked about his resignation last week over an extramarital affair. Petraeus was invited to testify behind closed doors to the House of Representatives and Senate intelligence committees that are investigating what happened in Benghazi on September 11 when attacks by militants on the mission and nearby CIA annex killed the U.S. ambassador to Libya and three other Americans. REUTERS/Mary F. Calvert