Colonel Matthew Klimow, executive assistant to General Richard Myers, vice chairman of the Joint Chiefs of Staff, receives a call from General Ralph Eberhart, the commander of NORAD, who urgently wants to talk to Myers. Klimow is at the Pentagon, in an office in the building’s outer ring, and has seen the news of the crashes at the World Trade Center on television. [George C. Marshall European Center for Security Studies, 8/3/2012] Eberhart, meanwhile, is in his office at NORAD’s headquarters at Peterson Air Force Base in Colorado Springs, Colorado. After seeing the second crash at the WTC on television, he realized that a coordinated terrorist attack was underway (see (9:03 a.m.-9:30 a.m.) September 11, 2001). [9/11 Commission, 3/1/2004; 9/11 Commission, 7/24/2004, pp. 465] He tried contacting General Henry Shelton, chairman of the Joint Chiefs of Staff, but was unable to reach him since Shelton is currently airborne, flying across the Atlantic Ocean for a NATO meeting in Europe (see 7:15 a.m. September 11, 2001), and so he now wants to talk to Myers instead. [9/11 Commission, 3/1/2004 ; 9/11 Commission, 3/1/2004; Shelton, Levinson, and McConnell, 2010, pp. 430-432] The Red Switch phone on Klimow’s desk, therefore, starts to ring. The Red Switch, Klimow will later describe, “is the global secure telephone and conferencing system that provides rapid top-secret communication links between the White House, the Pentagon, and all of our major commands around the world.” Klimow picks up the phone and hears Eberhart’s voice on the line. Knowing that Eberhart is the commander of NORAD, he will recall, “My heart sank because NORAD is responsible for defending North America from air attack.” Eberhart asks to speak to Myers. Myers, however, is away from the Pentagon, on Capitol Hill, where he has been meeting Senator Max Cleland (D-GA) (see Shortly Before 9:00 a.m. September 11, 2001 and (After 9:03 a.m.) September 11, 2001). “Sir, he’s on Capitol Hill,” Klimow explains. “Man, it’s urgent,” Eberhart says. “Get hold of him, get him to a phone,” he instructs Klimow. “I’m on it,” Klimow replies. Klimow then hangs up the Red Switch phone. He will subsequently call Myers and let him know that NORAD wants to talk to him (see (Before 9:29 a.m.) September 11, 2001), and Myers will talk to Eberhart (see (Before 9:30 a.m.) September 11, 2001). The exact time when Klimow speaks to Eberhart will be unstated. However, the call apparently takes place sometime before 9:29 a.m., since Klimow will recall that after he talks to Eberhart and then phones Myers, he receives another call on the Red Switch phone, inviting him to join the “significant event conference.” [Myers and McConnell, 2009, pp. 7-9; George C. Marshall European Center for Security Studies, 8/3/2012] This conference call will be convened by the National Military Command Center at the Pentagon at 9:29 a.m. (see 9:29 a.m.-9:34 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 37]