FILE - In this March 26, 2012 file photo, an Afghan policeman checks a man entering the provincial police station near the main gate of a joint civilian-military base where two British soldiers that were part of the NATO forces were killed in Lashkar Gah, Helmand province, south of Kabul, Afghanistan. An Afghan soldier shot and killed two British troops Monday, Aug. 27, 2012, at a NATO coalition base in southern Afghanistan before being gunned down by international forces, officials said. (AP Photo/Abdul Khaleq, File)
