According to one account, counterterrorism “tsar” Richard Clarke is given the go-ahead to authorize Air Force jets to shoot down threatening aircraft around this time. In late 2003, Clarke will recall to ABC News that, minutes earlier, he’d picked up the phone in the White House Situation Room and called Vice President Dick Cheney, who is in the Presidential Emergency Operations Center (PEOC) below the White House. He’d told him: “We have fighters aloft now. We need authority to shoot down hostile aircraft.” [ABC News, 11/29/2003] This call appears to be one Clarke also describes in his 2004 book Against all Enemies, though in that account he will describe having made his request to Army Major Mike Fenzel, who is also in the PEOC, rather than directly to Cheney. According to that account, the call occurred shortly before Clarke learns of the Pentagon attack, so roughly around 9:36 (see (Between 9:30 a.m. and 9:37 a.m.) September 11, 2001). [Clarke, 2004, pp. 6-7] Clarke describes to ABC News, “I thought that would take forever to get that [shootdown] authority.” But, “The vice president got on the phone to the president, got back to me, I would say within two minutes, and said, ‘Do it.’” [ABC News, 11/29/2003] If correct, this would mean the president authorizes military fighters to shoot down threatening aircraft at around 9:37-9:38. However, around this time, the president and vice president are reportedly having difficulty communicating with each other, while Bush heads from the Booker Elementary School to the Sarasota airport (see (9:34 a.m.-9:43 a.m.) September 11, 2001). [New York Times, 6/18/2004; Canadian Broadcasting Corporation, 9/10/2006] Furthermore, this account contradicts several others. In his 2004 book, Clarke will describe being told to inform the Pentagon it has shootdown authorization slightly later, some time between 9:45 and 9:56 (see (Between 9:45 a.m. and 9:56 a.m.) September 11, 2001). [Clarke, 2004, pp. 8] According to journalists Bob Woodward and Bill Sammon, Bush gives the shootdown authorization in a phone call with Cheney shortly after 9:56 (see (Shortly After 9:56 a.m.) September 11, 2001). [Sammon, 2002, pp. 102; Woodward, 2002, pp. 17-18; Washington Post, 1/27/2002] The 9/11 Commission will say he gives it in a call at 10:18 (see 10:18 a.m.-10:20 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 41]