NSA and defenders say its bulk surveillance could prevent another 9/11 . We came to find out afterwards that the person who had called into that safe house was al-Mihdhar , who was in the United States in San Diego . Peter Bergen : True story of 9/11 was n't a failure to have enough intelligence data . It's that the government did not know what it needed, or how much information they had. Bergen : U.S. officials often fail to properly interpret or share the data the government collects .
NSA and defenders say its bulk surveillance could prevent another 9/11 . Peter Bergen : True story of 9/11 was n't a failure to have enough intelligence data . It's that the government did not know what it needed, or how much information they had. Bergen : U.S. officials often fail to properly interpret or share the data the government collects .