KUALA LUMPUR, Malaysia – A Malaysian recruited by al-Qaeda to pilot a plane in a second wave of Sept. 11-style attacks on the United States pulled out after observing the carnage of the 2001 assaults, Southeast Asian officials said Friday. President Bush on Thursday outlined details of an alleged plot to hijack an airliner and fly it into a skyscraper in Los Angeles. He said cooperation between Washington and several Asian countries helped expose it. The plan never appeared close to the stage where it could be put into execution. Scores of arrests in the aftermath of the Sept. 11,...