U.S. Brig. Gen. Kevin Bergner speaks in Baghdad in July 2007 near a poster of Ali Musa Daqduq. Daqduq was captured in Iraq in March 2007, and is accused of orchestrating the killings of five U.S. soldiers. The U.S. left Daqduq in Iraqi custody when U.S. troops formally withdrew in December. But the Obama administration is seeking to try him before a military commission. Wsthiq Khuzaie/AP hide caption

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Hell and Back Again focuses on Sgt. Nathan Harris' life on the battlefield in Afghanistan and at home in North Carolina. Courtesy Danfung Dennis hide caption

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Traumatic brain injuries are most often caused by powerful blasts from improvised explosive devices. A roadside bomb explodes, and the concussive effect violently shakes the brain inside the skull. Stefano Rellandini/Reuters /Landov hide caption

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After a 20-year absence, Aseel Albanna returned to her native Iraq and found a very different country. Here, she poses with the statue of King Shahryar, a character in The Thousand and One Nights, near the Tigris River in Baghdad. Sean Carberry/NPR hide caption

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Marine Staff Sgt. Frank Wuterich talks to the media as his attorney, Neal Puckett, looks on after a 2010 pretrial hearing at Camp Pendleton in California. Wuterich is charged with voluntary manslaughter in the deaths of 24 Iraqi civilians in 2005. Chris Carlson/AP hide caption

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Hesham Abdul Ghani and his wife, Oras Touma, came to Michigan to escape religious persecution. Jacki Lyden/NPR hide caption

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