A man removes a poster of presidential candidate Ashraf Ghani after the official end of the election campaign. Saturday's runoff election pits Ghani against Abdullah Abdullah. Both have held top government positions and want close ties with the U.S. Ahmad Masood/Reuters/Landov hide caption

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Chief Warrant Officer Michael Durant, wounded when the helicopter he was piloting was shot down in Somalia, arrives at Andrews Air Force Base in Maryland, on Oct. 16, 1993. He was held captive for 11 days. Joe Marquette/AP hide caption

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President Obama, Jani Bergdahl and Bob Bergdahl speak during a news conference in the Rose Garden of the White House in Washington on May 31 about the release of their son, U.S. Army Sgt. Bowe Bergdahl. Carolyn Kaster/AP hide caption

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U.S. Army Sgt. Bowe Bergdahl watches in July 2009 as one of his captors displays Bergdahl's identity tag during the first of several videos the Taliban released of the soldier. Reuters/Landov hide caption

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Sgt. Kyle Gonzales, a sniper with the 82nd Airborne, has a cigarette after a gun battle near the village of Babaker, Giro district, Ghazni province. The soldiers have engaged in gun battles every time they push into the hamlets north of their forward operating base. David Gilkey/NPR hide caption

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Country music singer Brad Paisley performs during a troop rally with President Obama during an unannounced visit at Bagram Air Field on Sunday. Evan Vucci/AP hide caption

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President Barack Obama, right, is greeted by U.S. Ambassador to Afghanistan James Cunningham, center, and Marine General Joseph Dunford, commander of the U.S.-led International Security Assistance Force (ISAF), as he arrives at Bagram Air Field for an unannounced visit, on Sunday. Evan Vucci/AP hide caption

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Afghan villagers pray at the site of a landslide in Abi-Barik Saturday. Rescuers searched in vain for survivors of the disaster, which is feared to have killed more than 2,000 people. Shah Marai/AFP/Getty Images hide caption

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The women of the Afghan National Cycling Federation team train outside Kabul, the capital. They face poor road conditions, terrible traffic, lots of gawking and even threats of violence in pursuit of their sport. Peter Breslow/NPR hide caption

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