As the 9/11 Commission will later describe, the commander of NORAD, General Ralph Eberhart, now directs “all air sovereignty aircraft to battle stations, fully armed.” [9/11 Commission, 7/24/2004, pp. 38] Being at “battle stations” means the pilots have to suit up into their flight gear and get into their planes, ready to start the engines and taxi out if a scramble order follows. [Spencer, 2008, pp. 27] Senior NORAD officials will subsequently give the order to launch available fighter jets across the nation (see (Between 9:50 a.m. and 10:00 a.m.) September 11, 2001). [Spencer, 2008, pp. 178, 180]
Clarke Requested Combat Air Patrols – A few minutes earlier, according to his own account, counterterrorism “tsar” Richard Clarke, who is in the White House Situation Room, learned of an aircraft hitting the Pentagon and instructed his deputy: “Find out where the fighter planes are. I want combat air patrol over every major city in this country” (see (Between 9:38 a.m. and 9:45 a.m.) September 11, 2001). Whether Clarke’s actions influenced Eberhart to issue his order is unknown. [Clarke, 2004, pp. 7-8]
Fighter Units Possibly Offered Help Much Earlier – The Toledo Blade will state that NORAD’s Northeast Air Defense Sector (NEADS) only begins calling bases across the US to request help “[b]y 10:01 a.m.” [Toledo Blade, 12/9/2001] But an article in Aviation Week and Space Technology magazine will indicate that NORAD and NEADS began receiving calls from various fighter units, asking, “What can we do to help?” right after the second World Trade Center tower was hit at 9:03, when it had become obvious the US was under attack (see (After 9:03 a.m.) September 11, 2001). [Aviation Week and Space Technology, 6/3/2002] It is therefore unclear why the instruction to put available fighters on battle stations—or to scramble them—was not issued significantly earlier.