There was another exercise - "Vigilant Warrior", which was in fact according to a NORAD source a live-fly hijack drill being conducted at the same time. With only 8 available fighter aircrafts, and that have to be dispatched in pairs, they were dealing with as many as 22 possible hijacks on the day of 9/11 and they couldn't separate the war game exercises from the actual hijacks.
Oli teinegi õppus - "Vigilant Warrior", mis oli NORADI andmete kohaselt seotud samuti kaaperdatud lennukiga, mis lendas samal ajal ainult 8 vaba reaktiivlennukit, mis peavad õhku tõusma paarikaupa, nad tegelesid 11. sept 22 võimaliku kaaperdatud lennukiga