The Continental United States NORAD Region (CONR) issues a message to its three air defense sectors—including the Northeast Air Defense Sector (NEADS)—stating that Vice President Dick Cheney has authorized it to shoot down suspicious aircraft.
Order Sent over Computer Chat System – About 15 minutes earlier, a military officer at the White House relayed to the Pentagon’s National Military Command Center (NMCC) that Cheney had confirmed that fighter jets were cleared to engage an inbound aircraft if they could verify that the aircraft was hijacked (see 10:14 a.m.-10:19 a.m. September 11, 2001). According to the 9/11 Commission, “It is not clear how [this] shootdown order was communicated within NORAD.” However, Major General Larry Arnold, the CONR commander, now instructs his staff to broadcast a message over a NORAD computer chat system, passing on Cheney’s authorization. The message states, “10:31 Vice president has cleared to us to intercept tracks of interest and shoot them down if they do not respond, per CONR CC [General Arnold].” The message is received at CONR’s three air defense sectors: the Western, Southeast, and Northeast. [9/11 Commission, 7/24/2004, pp. 42; Spencer, 2008, pp. 240]
Arnold Could Issue Shootdown Order Himself – Arnold, who is at the CONR air operations center at Tyndall Air Force Base in Florida, will later comment, “I have the authority in case of an emergency to declare a target hostile and shoot it down under an emergency condition… but it was comforting to know we legally had the authority from the president of the United States.” [Filson, 2002; Code One Magazine, 1/2002; Filson, 2003, pp. 75-76] The 10:31 chat message is the first notification personnel on the NEADS operations floor receive of the shootdown order. These personnel are reportedly confused over the order and do not pass it on to fighter pilots under their command (see 10:32 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 42-43; 9/11 Commission, 8/26/2004, pp. 47]