The National Commission on Terrorist Attacks Upon the United States (9/11 Commission), chaired by Thomas Kean and Lee H. Hamilton, was formed in late 2002 to prepare a thorough account of the circumstances surrounding the attacks, including preparedness for and the immediate response to the attacks. On July 22, 2004, the Commission issued the 9/11 Commission Report. The report detailed the events of 9/11, found the attacks were carried out by members of al-Qaeda, and examined how security and intelligence agencies were inadequately coordinated to prevent the attacks. Formed from an independent bipartisan group of mostly former Senators, Representatives, and Governors, the commissioners explained, "We believe the 9/11 attacks revealed four kinds of failures: in imagination, policy, capabilities, and management". The Commission made numerous recommendations on how to prevent future attacks, and in 2011 was dismayed that several of its recommendations had yet to be implemented.
For the first time in U.S. history, SCATANA was invoked, thus stranding tens of thousands of passengers across the world. Ben Sliney, in his first day as the National Operations Manager of the FAA, ordered that American airspace would be closed to all international flights, causing about five hundred flights to be turned back or redirected to other countries. Canada received 226 of the diverted flights and launched Operation Yellow Ribbon to deal with the large numbers of grounded planes and stranded passengers.
More InfoIn the South Tower, one stairwell, Stairwell A, was left intact after Flight 175 hit, allowing 14 people located on the floors of impact (including one man who saw the plane coming at him) and four more from the floors above to escape. New York City 9-1-1 operators who received calls from people inside the tower were not well informed of the situation as it rapidly unfolded and as a result, told callers not to descend the tower on their own. In total 630 people died in that tower, fewer than half the number killed in the North Tower. Casualties in the South Tower were significantly reduced because some occupants decided to start evacuating as soon as the North Tower was struck. The failure to evacuate the South Tower fully after the first jet crash into the North Tower was described by USA Today as "one of the day's great tragedies".
More InfoWeeks after the attack, the death toll was estimated to be over 6,000, more than twice the number of deaths eventually confirmed. The city was only able to identify remains for about 1,600 of the World Trade Center victims. The medical examiner's office collected "about 10,000 unidentified bone and tissue fragments that cannot be matched to the list of the dead". Bone fragments were still being found in 2006 by workers who were preparing to demolish the damaged Deutsche Bank Building. In 2010, a team of anthropologists and archaeologists searched for human remains and personal items at the Fresh Kills Landfill, where 72 more human remains were recovered, bringing the total found to 1,845. DNA profiling continues in an attempt to identify additional victims. The remains are being held in storage in Memorial Park, outside the New York City Medical Examiner's facilities. It was expected that the remains would be moved in 2013 to a repository behind a wall at the 9/11 museum. In July 2011, a team of scientists at the Office of Chief Medical Examiner was still trying to identify remains, in the hope that improved technology will allow them to identify other victims. On August 7, 2017, the 1,641st victim was identified as a result of newly available DNA technology, and a 1,642nd on July 26, 2018. A further 1,111 victims are yet to be identified.
More InfoAt 2:40 p.m. in the afternoon of September 11, Secretary of Defense Donald Rumsfeld was issuing rapid orders to his aides to look for evidence of Iraqi involvement. According to notes taken by senior policy official Stephen Cambone, Rumsfeld asked for, "Best info fast. Judge whether good enough hit S.H. [Saddam Hussein] at same time. Not only UBL" [Osama bin Laden]. Cambone's notes quoted Rumsfeld as saying, "Need to move swiftly—Near term target needs—go massive—sweep it all up. Things related and not." In a meeting at Camp David on September 15 the Bush administration rejected the idea of attacking Iraq in response to 9/11. Nonetheless, they later invaded the country with allies, citing "Saddam Hussein's support for terrorism". At the time, as many as 7 in 10 Americans believed the Iraqi president played a role in the 9/11 attacks. Three years later, Bush conceded that he had not.
More InfoAt 8:32 a.m. FAA officials were notified Flight 11 had been hijacked and they, in turn, notified the North American Aerospace Defense Command (NORAD). NORAD scrambled two F-15s from Otis Air National Guard Base in Massachusetts and they were airborne by 8:53 a.m. Because of slow and confused communication from FAA officials, NORAD had 9 minutes' notice that Flight 11 had been hijacked, and no notice about any of the other flights before they crashed. After both of the Twin Towers had already been hit, more fighters were scrambled from Langley Air Force Base in Virginia at 9:30 a.m. At 10:20 a.m. Vice President Dick Cheney issued orders to shoot down any commercial aircraft that could be positively identified as being hijacked. These instructions were not relayed in time for the fighters to take action. Some fighters took to the air without live ammunition, knowing that to prevent the hijackers from striking their intended targets, the pilots might have to intercept and crash their fighters into the hijacked planes, possibly ejecting at the last moment.
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