March 24, 1999-2001: NEADS Officer Presents Briefing on Threat of Terrorists Crashing Planes into Buildings

Lieutenant Colonel Mark Stuart, an intelligence officer at NORAD’s Northeast Air Defense Sector (NEADS), drafts a briefing that he then gives at various venues, on the threat of terrorists using aircraft to crash into buildings. According to a memo of his 2003 interview with the 9/11 Commission, Stuart briefs “over time in 1999, 2000, and 2001 the logical progression that linked hijackings to the use of explosives in vehicles [a probable reference to the 1998 African embassy bombings] and then, logically, to the use of aircraft.” Stuart gives his briefing at annual intelligence conferences at both the Continental United States NORAD Region (CONR) and NORAD itself. At CONR, the receiving official is Colonel Tom Glenn; at NORAD it is Navy Captain Michael Kuhn. According to the 9/11 Commission memo, the hijacking scenarios that Stuart conceives are “primarily personal views; there was no substantive intelligence. He based his analysis on the boldness of past terrorist actions.” Stuart also discusses his analyses with his counterparts at NORAD’s Southeast Air Defense Sector (SEADS)—a Major Clegg—and its Western Air Defense Sector (WADS)—a Lieutenant Colonel Schauer. In all cases, he briefs that a hijacking would originate overseas, inbound to the US. He never imagines it could originate inside the US. Stuart believes that security vulnerabilities overseas make it far more likely that hijackings will come from outside the US. He never imagines multiple hijackings in any scenario, although he envisions terrorists taking over planes and piloting them at the last possible moment as they crash. Stuart will be at NEADS on 9/11, and will participate in its response to that day’s attacks. [9/11 Commission, 10/30/2003 ]