I don't know who said it first, I copied it off another FReeper's post a long time ago. Sorry, I can't help you, I can't even remember which FReeper I snagged it from .... :(
Toward FREEDOM
I think I found who said it first. This is from 09/11/2002.
Excerpt from Google cache
"The era of Osama lasted about an hour and a half or so, from the time the first plane hit the tower to the moment the general militia of Flight 93 reported for duty."
-- James Robbins (cited as working for the AP or UPI)
The first quoting of this appeared on Free Republic in early February of this year.
-Jay