term of art

The NYT has audio and transcripts of 9/11 chatter up here, much of which was used in United 93. Not this portion though, which I find rather touching. The Army is looking for info from the FAA.

Watson
We’re checking to get some information from you, if we could.
Scoggins
O.K., what would, what do you need?
Watson
We need call sign, type aircraft.
Scoggins
It’s ah American 11.
Watson
American 11?
Scoggins
Type aircraft is a, uh, 767.
Watson
And, number of souls on board, do you know that?
Scoggins
Uh, I don’t, know, hold on. Hey Dan, do we got souls on board, and all that information?
Scoggins
No. We don’t have any of that information.
Watson
You don’t have any of that? O.K.