Major General Peter Chiarelli, the Army’s director of operations, readiness, and mobilization, is informed that a hijacked aircraft is thought to be heading toward Washington, DC, and is possibly aiming for the Pentagon. Chiarelli was in his office at the Pentagon, preparing to go to a scheduled meeting, when he learned of the attacks on the World Trade Center. In response, he instructed a colleague to activate the Army’s Crisis Action Team (CAT) (see (Shortly After 9:03 a.m.) September 11, 2001). Shortly after doing so, he was phoned by General Eric Shinseki, the Army’s chief of staff who is currently in Singapore, attending a conference. Shinseki asked for a situation report. “All I could tell him, basically, was what I had seen on TV,” Chiarelli will later recall. “I didn’t have any time to leave the room, to go to the CAT, to check with the intel folks,” he will add. Now, while Chiarelli is still on the phone with Shinseki, Oscar Benjamin, an analyst in the Army’s Antiterrorism Operations Intelligence Cell (ATOIC), comes into his office. [US Army Center of Military History, 2/5/2002; Rossow, 2003, pp. 65; Lofgren, 2011, pp. 95-98] The ATOIC is responsible for providing terrorism early warning to the Army. [University of Wisconsin, 2/25/2009] Benjamin reports that additional aircraft have been hijacked and one of these aircraft is thought to be heading toward Washington—“in his opinion for the Pentagon,” according to author Robert Rossow. Chiarelli passes this information on to Shinseki. Realizing there is little he can do from Singapore, Shinseki says he will call back later and ends the call. Chiarelli then heads to the Army Operations Center in the basement of the Pentagon, where the CAT is assembling. Just after he arrives on the CAT floor, one of his intelligence officers (possibly Benjamin, although this is unstated) comes in and, he will recall, tells him “that they had credible information that one of the [additional hijacked] aircraft was headed for DC.” Chiarelli will then hear the sound of the impact as the Pentagon is hit. [US Army Center of Military History, 2/5/2002; Rossow, 2003, pp. 65-66; Lofgren, 2011, pp. 98-99] (The Pentagon is hit at 9:37 a.m. (see 9:37 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 10] )