Regarding SOP for a suspected hijacked flight, if we read farther in Griffin's article, we see that SOP was not followed by any stretch of the imagination.
http://www.911truth.org/article.php?story=20051205150219651. . .The jet fighters at the disposal of NEADS could respond very quickly: According to the US Air Force website, F-15s can go from "scramble order" to 29,000 feet in only 2.5 minutes, after which they can then fly over 1800 miles per hour (140). (All page numbers given parenthetically in the text are to David Ray Griffin, The 9/11 Commission Report: Omissions and Distortions). Therefore--according to General Ralph Eberhart, the head of NORAD--after the FAA senses that something is wrong, "it takes about one minute" for it to contact NORAD, after which, according to a spokesperson, NORAD can scramble fighter jets "within a matter of minutes to anywhere in the United States" (140). These statements were, to be sure, made after 9/11, so we might suspect that they reflect a post-9/11 speed-up in procedures. But an Air Traffic Control document put out in 1998 warned pilots that any airplanes persisting in unusual behavior "will likely find two
on their tail within 10 or so minutes" (141).
The First Version of the Official Story
On 9/11, however, that did not happen. Why not? Where was the military? The military's first answer was given immediately after 9/11 by General Richard Myers, then the Acting Chair of the Joint Chiefs of Staff, and Mike Snyder, a spokesman for NORAD. They both said, independently, that no military jets were sent up until after the strike on the Pentagon. That strike occurred at 9:38, and yet American Airlines Flight 11 had shown two of the standard signs of hijacking, losing both the radio and the transponder signal, at 8:15. This means that procedures that usually result in an interception within "10 or so minutes" had not been carried out in 80 or so minutes.
That enormous delay suggested that a stand-down order, canceling standard procedures, must have been given. Some people started raising this possibility.
The Second Version of the Official Story
Very quickly, a new story appeared. On Friday, September 14, CBS News said: "contrary to early reports, US Air Force jets did get into the air on Tuesday while the attacks were under way," although they arrived too late to prevent the attacks (141-42).4 This second story was then made official on September 18, when NORAD produced a timeline stating the times that it was notified about the hijackings followed by the times at which fighters were scrambled (143). The implicit message of the timeline was that the failure was due entirely to the FAA, because in each case it notified the military so late that interceptions were impossible.
Not quite everyone, however, accepted that conclusion. Some early members of the 9/11 truth movement, doing the math, showed that NORAD's new timeline did not get it off the hook.5 With regard to the first flight: Even if we accept NORAD's claim that NEADS was not notified about Flight 11 until 8:40 (which would mean that the FAA had waited 20 minutes after it saw danger signs before it made the call), NORAD's implicit claim that it could not have prevented the first attack on the WTC is problematic. If fighters had immediately been scrambled from McGuire Air Force Base in New Jersey, they could easily have intercepted Flight 11 before 8:47, which is when the north tower of the WTC was struck.