Ah, so if the United States still maintained the alert sites it once did, so that armed aircraft could be launched instantly, and a pilot would have been available to shoot down the second aircraft before it could have crashed into the WTC, he would be a murderer?
If a terminally ill patient was flying low at a high velocity on an intended collision course with a building I guess the right thing to do would be to shoot them down.
I just hope their hospital gown is closed at the back. It would be very undignified to be shot out of the sky while mooning the general population.