FBI: 'No Specific Threat' One Year After Bin Laden Killing

American law enforcement agencies say they have "no credible information" of a terror attack in the United States tied to next week's one year anniversary of the May 2 raid that killed al Qaeda leader Osama bin Laden. Even so, in an advisory issued late Wednesday and obtained by ABC News, FBI and Homeland Security officials warned of "renewed efforts to target Western aviation."   European law enforcement officials said stepped up security was being planned at major airports and transportation...Full Story