Afghanistan's president said it again this week. Hamid Karzai promised to close foreign private security companies by the end of the year. International officials are urging Karzai to reverse his decree. They warn that aid workers can't rely on Afghan Police to protect them. As it turns out, US forces in Afghanistan have been trying for some time to improve the performance of the local police forces. Progress has been erratic. Ben Gilbert was embedded with the 504th Military Police Battalion in Kandahar City when he sent this report on the training of the Afghan police.