Evening News Online, 04.26.12

      |Law enforcement officials are on high alert as messages from known terrorists urge attacks on the anniversary of Osama bin Laden's death; Also, the CIA officer in charge of the interrogation of 9/11 mastermind Khalid Sheik Mohammed describes what it was like waterboarding the terrorist; And, a recording of Louis Armstrong's last trumpet performance has been rediscovered after 40 years .

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