The most senior NSA official interviewed by the 9/11 Commission with a memo of interview in the recently released batch is undoubtedly Barbara McNamara. She joined the agency in 1963 and held a series of senior management positions, culminating in being deputy director from 1997 to 2000, before being put out to pasture as the NSA’s representative to London.
This is quite the most remarkable passage of the memo:
She does not recall being personally [asked] to provide about transcripts or raw data for [counterterrorism]. NSA has analysts posted across the community. But sharing of raw data is not done routinely by NSA unless they get a specific request for a specific item. She said that she does not remember people asking for raw data, but if they wanted it NSA would have provided it, particularly if they were called by the [CIA Director] or [Deputy CIA Director] or [Assistant CIA Director for Collection].