Officials Watch for Terrorists With Body Bombs on US-Bound Planes

With the anniversary of Osama bin Laden's death looming, American and European authorities told ABC News today that they fear al Qaeda may soon try to explode U.S.-bound aircraft with explosives hidden inside the bodies of terrorists. As a result, security at several airports in the U.K. and elsewhere in Europe and the Middle East has been substantially stepped up, with a focus on U.S. carriers. WATCH "World News with Diane Sawyer" for more. Additional federal air marshals have also been...Full Story