A scene from the early days of the fighting in Iraq in the spring of 2003. In one incident, three members of an Iraqi family were killed. A U.S. Marine involved in the shooting recently tracked down the family to ask for forgiveness. Laurent Rebours/AP hide caption

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Sgt. Ben Roberts (center), recently returned from Afghanistan, speaks with Chick-fil-A manager Michael Sims at a military job fair in Columbia, S.C., in January. John Moore/Getty Images hide caption

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A Sudanese demonstrator burns a German flag as others shout slogans after torching the German embassy in Khartoum during a protest against a low-budget film mocking Islam on Friday. Around 5,000 protesters in the Sudanese capital angry over the amateur anti-Islam film stormed the embassies of Britain and Germany, which was torched and badly damaged. Ashraf Shazly/AFP/Getty Images hide caption

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Members of the military listen to President Obama during his visit to Fort Bliss, Texas, on Friday. Pablo Martinez Monsivais/AP hide caption

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Tilman, Arlington National Cemetery, Arlington, Virginia, 2012 Charlotte Dumas/Courtesy of the Corcoran Gallery of Art hide caption

itoggle caption Charlotte Dumas/Courtesy of the Corcoran Gallery of Art

Brian Castner served as an Explosive Ordnance Disposal officer in the U.S. Air Force from 1999 to 2007, deploying to Iraq to command bomb disposal units in Balad and Kirkuk in 2005 and 2006. Joey Campagna/Courtesy of the author hide caption

itoggle caption Joey Campagna/Courtesy of the author

The Natanz facility, shown here in a photo taken May 14, 2009, is about 150 miles from Tehran. AP/GeoEye Satellite Image/AP/GeoEye Satellite Image hide caption

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Iraqi Prime Minister Nouri al-Maliki (center) arrives on May 8 at Kirkuk airport in northern Iraq, on his first visit to the multi-ethnic city since taking office. Marwan Ibrahim/AFP/Getty Images hide caption

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A veteran of the Iraq War with post-traumatic stress disorder talks to physical therapist Nicole Bormann before a session in the VA Medical Center in St. Louis. Chris Hondros/Getty Images hide caption

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