WASHINGTON (AP) — U.S. investigators say at least 152 Afghans sent to the United States for military training during the course of the war against the Taliban have gone AWOL. They are considered a security risk in the U.S. because they have military training and are of fighting age, with little apparent risk of arrest or detention. The problem grew worse last year, and a report Friday by the Special Inspector General for Afghanistan Reconstruction says it expects little or no improvement anytime soon. The report says investigators' interviews with Afghans currently in the U.S.