WASHINGTON (AP) - Army investigators concluded that soldiers who photographed American-born Taliban fighter John Walker Lindh in captivity in Afghanistan with an obscenity written on his blindfold were guilty of "barracks humor" but not intentional wrongdoing, according to documents released Tuesday. The investigators also found no evidence to support allegations that members of the 5th Special Forces Group, based at Fort Campbell, Ky., intentionally destroyed evidence or impeded a Justice Department investigation of the wartime treatment of Lindh, who denies having fought against U.S. forces in Afghanistan. Lindh, a California native now in his early 20s, was captured in Mazar-e-Sharif...