Perhaps they were interviewed afterward. Check out “Then Came The Fire” at: http://www.history.army.mil/news/2016/160900a_911.html
For more stories of those who lived through the Pentagon attack or helped with the recovery effort, see: Then Came The Fire: Personal Accounts from the Pentagon, 11 September 2001. Washington D.C.: US Army Center of Military History, 2011.
Thanks for the link. Good work by the U.S. Center of Military History.