Missed Calls: Is the NSA lying about its failure to prevent 9/11?
https://consortiumnews.com/2014/01/07/nsa-insiders-reveal-wh...
This may be the source (though the people involved have said as much in other essays and interviews).
https://consortiumnews.com/2014/01/07/nsa-insiders-reveal-wh...
This may be the source (though the people involved have said as much in other essays and interviews).