IAMA Air Traffic Controller at Boston TRACON. On 9/11 I vectored American 11 and United 175 during their departure, and participated in the grounding of all flights that day. AMAA!
Awhile ago there was a request for an Air Traffic Controller involved in the Sept. 11 attacks to do an AMA. My son has convinced me to somewhat belatedly answer your questions.
A quick Bio:
I joined the FAA in 1989. On Sept. 11th 2001 I was working initial departure (the Air Traffic Controller that directs aircraft just after takeoff during climb) at Boston Logan Airport, and directed both American Airlines 11 and United Airlines 175 before they were hijacked (I was not controlling them during the hijacking). In this NTSB transcript of American 11, I'm labeled ID (B).
I have also controlled Air Force One several times, John Travolta's 707, and in 2008 an Angel Flight aircraft I was controlling lost control and crashed. The accident was completely due to pilot error.
Ask me almost anything!
edit - Heading out to birthday dinner for a family member, not sure if I will be back in time to answer more questions. If not, it's been fun, thanks!