Re Flight 93, one small detail - - the first reports all said that the hijackers wore red "headbands". Later reports changd this detail to "bandanas" and took specific care to identify the significance of these.
Can you find any of the early "headband" reports? (I have a reason for asking.)
You'll find a number of reports of the red headbands on
this Google search. (I haven't looked at the articles in detail except to confirm that many of them do describe red headbands on the terrorists.)
What is the significance of this fact?