Excellent, Jeff. I believe Mark Brigham (from San Francisco) was on Flight 93, as well, and worked with the other men...?
I have not ead definitivelt where Mark was involved. Only his mom saying she feels he must have been involved due to his fighting off a mugger once.
The others have cell phone conversations indicating their direct involvement. To date, there are five, three men and two women (one a flight attendant).
The Heroes of Flight 93