Afghan women shop in Kabul Saturday. Women cast more than a third of the ballots — 36 percent — in Afghanistan's presidential election, officials said. The race will likely head to a runoff next month. Wakil Koshar/AFP/Getty Images hide caption

itoggle caption Wakil Koshar/AFP/Getty Images

An Afghan police officer kept watch Thursday at the gate of the Cure hospital in Kabul. Earlier, authorities say, a security guard at the hospital opened fire — killing three American citizens. Shah Marai /AFP/Getty Images hide caption

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Louise Hastie, the shelter manager of Nowzad Dogs in Kabul, holds a stray puppy named Aki. Afghanistan has a large population of street cats and dogs. While there are no government programs to control the animals, foreigners have taken in some. David Gilkey/NPR hide caption

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Associated Press photographer Anja Niedringhaus, shown here in 2005, was killed Friday in Khost, Afghanistan. AP reporter Kathy Gannon was injured. Both have covered Afghanistan for many years. Peter Dejong/AP hide caption

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Associated Press photographer Anja Niedringhaus is seen in a 2005 photo taken in Rome. She was killed Friday in Khost, Afghanistan. AP reporter Kathy Gannon was injured. A gunman opened fire on them as they sat in a car. Peter Dejong/AP hide caption

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A man walks past a billboard for presidential candidate Ashraf Ghani in the Afghan capital Kabul. President Hamid Karzai is stepping down and the country is poised for its first-ever democratic transition of power. The ballot is set for Saturday. David Gilkey/NPR hide caption

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A boy on his bike, with a U.S. Stryker following behind, in the Panjwai district center in southern Afghanistan. For years, this area was one of the most dangerous places in Afghanistan. But it is now considered safe as Afghans prepare to vote in a presidential election Saturday. David Gilkey/NPR hide caption

itoggle caption David Gilkey/NPR

Afghan Special Forces converge on an Independent Election Commission office after the Taliban launched an assault on the compound Tuesday in Kabul. Two suicide bombers detonated their vests outside the offices while gunmen stormed the building. David Gilkey/NPR hide caption

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