Excerpt - Intelligence agencies have been warned that al Qaeda may be planning to attack air and rail travel in Europe in actions that may occur during the busy holiday travel season, CBS News has learned exclusively. In separate interviews with Arab and other intelligence sources, CBS News has been told that the warnings come from interrogations of al Qaeda suspects who recently left Afghanistan and Pakistan. "One suspect said plans for repeating the Heathrow attempt (a reference to the failed 'liquid bomb' plot interrupted in August) were all prepared. It is now a matter of taking action," said one...