NSA and CIA say its bulk surveillance could prevent another 9/11 . Peter Bergen : True cause of 9/11 was n't a failure to have enough sensitive data . He says the Bush administration failed to connect the dots , but they were plentiful . Bergen : During a House Intelligence Committee hearing on June 18 , NSA director Gen. Keith Alexander said , `` Let me start by saying that I would much rather be here today debating this point than trying to explain how we failed to prevent another 9/11 . '' U.S. officials often fail to properly analyze or share the data the NSA collects .
NSA and CIA say its bulk surveillance could prevent another 9/11 . Peter Bergen : True cause of 9/11 was n't a failure to have enough sensitive data . He says the Bush administration failed to connect the dots , but they were plentiful . Bergen : U.S. officials often fail to properly analyze or share the data the NSA collects .