Libyans wave national flags in Tripoli's Green Square, renamed Martyr's Square, during morning prayers Wednesday on Eid al-Fitr, the holiday marking the end of Ramadan. Libyans are also celebrating the ouster of Moammar Gadhafi. Francois Mori/AP hide caption

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Deputy Defense Secretary William Lynn (left) presents Gen. David Petraeus with an American flag at his retirement ceremony after 37 years in the Army, in Arlington, Va., on Wednesday. Petraeus will now lead the CIA. Saul Loeb/AFP/Getty Images hide caption

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U.S. soldiers check for land mines on a canal running through Highway 1 in Afghanistan's Kandahar province, Aug. 6. Improvised explosive devices, or IEDs, are the Taliban's weapon of choice and are the leading killer of civilians and soldiers in Afghanistan. Romeo Gacad/AFP/Getty Images hide caption

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Libyan rebel fighters advance in their tank about 60 miles east of the town of Sirte on Tuesday. Sirte is Moammar Gadhafi's hometown and the last bastion of his loyalist forces. Eric Feferberg/AFP/Getty Images hide caption

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An Army carry team moves a transfer case containing the remains of Spc. Michael C. Roberts during a dignified transfer ceremony at Dover Air Force Base, Del., on Tuesday. Ann Heisenfelt/AP hide caption

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President Obama addresses the 93rd American Legion National Convention at the Minneapolis Convention Center on Tuesday. Cory Ryan/Getty Images hide caption

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A Syrian military tank takes position in a residential street in the central city of Homs Monday. Government troops reportedly are defecting to join the activists. Joesph Eid/AFP/Getty Images hide caption

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