Zacarias Moussaoui claimed yesterday that he was supposed to fly a fifth plane on September 11. If true, it's just another blow to the 9-11 Commission and their report. I don't even remember any hint in the report that the attack may have been intended to include more than four planes. If Moussaoui is telling the truth then what does it say about our intelligence that 4½ years after the attacks we didn't know there was supposed to be a fifth plane involved.
If there was supposed to be a fifth plane then what happened to the rest of the hijack team (other than Richard Reid, who Moussaoui named)? All this talk about Moussaoui being the "twentieth hijacker" was way off. He was (presumably) supposed to be one of 25 (at least). We're still missing one from Flight 93 and 3 from whatever flight Moussaoui was supposed to be on.
And, what flight was that supposed to be? Somewhere in America there are 40 or so people who were spared by luck/fate/whatever. If Moussaoui hadn't been arrested they'd all be dead today, whether his attack succeeded or not (like Flight 93).