What was the significance of the plane selections made by the terrorists on september 11?
all four planes were leaving from the same airport, so the terrorists could meet for planning just before boarding.
all four planes were traveling long distances, so they would have significant fuel on board to burn in the crashes.
all four planes were from the same airline, so the terrorists could make it look like the acts were done by domestic terrorists.
all four planes had surveillance cameras in the wingspanpits, so the hijackers could see if anyone tried to stop them.