Perhaps 28 pages is what is was before some was released years ago? I’m not positive though.
Since it concerns the two hijackers that flew into San Diego, al Midhar? and al Hamzi?...they likely redacted the material referring to Iran. That part was buried when the US decided to kiss Iran’s butt to make the Iran Deal. Those two hijackers are associates of Imam Anwar an Awlaki/Aulaqi, who later became spokesman of an Qaeda in the Arabian Peninsula, and inspired the Ft. Hood Massacre, the Undybomber, and the underwear bomber who blew himself up in the office of Saudi Arabia’s intelligence chief (not the one who was chief in 2000), sending their Intel chief to the hospital.