>> sandra: the cia de classifying nearly half a million files on the osama bin laden compound. many contain evidence of his day-to-day involvement in al-qaeda operation. among the documents his 228-page personal journal. 18,000 document files, 79,000 audio files, a blooper reel of his speeches and even al-qaeda video. dr. mitchell is the author of "enhanced interrogation." what is being revealed in the documents and videos? >> it is a treasure trove and the men who risked their lives to get it did the country a great service to get it.