There are a number of issues, which have been long buried in the fog of the event, that require detailed answers:
(1) Three Middle Eastern men, holding what must be assumed were bogus Pakistani passports, were overheard, on Grand Cayman, discussing a major attack upon the United States; this occurred in June of 2011. Their identities were never made public, nor their disposition. They were detained, and some claim that they were turned over to US authorities. Was this an intelligence agency, and what ever became of these individuals ? These details have never been released, and it is suspected that they are classified.
(2) Did the Government of the Cayman Islands thereafter notify an appropriate American law enforcement agency, or use diplomatic channels, to convey this imminent threat, prior to 9/11 ? If not, why not ?
(3) Reports that a Cayman Islands financial institution funneled some of the money used to conduct the 9/11 hijackings, into the United States, for Al-Qaeda. Which bank or banks were involved ? Were there Cayman corporations utilized, and if so, which attorney or law firm advised the hijackers ?
Though classified information is routinely downgraded after a period of time, when the need for classification no longer exists, I am unable to find any such release of this specific information. One wonders what the answers to these three questions are, and if they was any gross negligence involved, on the part of government officials in the Cayman Islands, or the United States. Let us hope that the answers are out there.