authorized to "deploy the system with weapons-capable aircraft." [See Bin Laden Issue Station.] September 11, 2001 After the attacks on the World Trade Center and The Pentagon, some CTC staff refused an order to evacuate the CIA headquarters at Langley. They included the shift of the Global Response Center on the exposed sixth floor, which Black would eventually argue had "a key function in a crisis like this." Tenet finally accepted that Black wouldn't leave, and that their lives would be put at risk. The CTC obtained passenger lists from "the planes that had been turned into weapons that morning." "[A] CTC analyst raced over to the printing plant," from which most CIA staff had been evacuated, and pointed out the names Khalid al-Mihdhar and Nawaf al-Hazmi, who they had "been looking for the last few weeks." This was the first "absolute proof" that the attacks were an Al-Qaeda plot. The CTC had first come across the names in connection with potential terrorist activity in the winter of 1999–2000 (see above). Post 9/11: Global War on Terror On September 13, 2001, Black briefed President George W. Bush in the White House Situation Room and outlined a CIA-led campaign in Afghanistan in which small teams of CIA officers and Green Berets would work with the Northern Alliance to topple the Taliban government and expel Al-Qaeda. Black told Bush: "When we're through with them, they will have flies walking across their eyeballs."<ref>Harnden, Toby, "First Casualty: The Untold Story of the CIA Mission to Avenge 9/11. Little, Brown, 2021. p. 46</ref> Black told Bush that the CIA's planning efforts had put them in a better position to respond after the attacks. As Tenet put it, How could [an intelligence] community without a strategic plan tell the president of the United States just four days after 9/11 how to attack the Afghan sanctuary and operate against al-Qa'ida in ninety-two countries around the world? This was at a "war council," a restricted group of the National Security Council, chaired by President Bush at Camp David on September 15, 2001. Black was also present. Tenet proposed first to send CIA teams into Afghanistan to collect intelligence and mount covert operations. The teams would act jointly with military Special Operations units. "President Bush later praised this proposal, saying it had been a turning point in his thinking." Woodward's Bush at War mentions two meetings at which Black