Sep 10: The Taliban begins their offensive against the Northern Alliance, with the goal of taking all of Afghanistan.

 

Sep 10: Acting FBI Director Thomas Pickard’s appeal to the Attorney General for additional counterterrorism funding is denied.

Sep 10: The ‘put’ option volume on AMR stock is 6X higher than any surrounding day. This short selling later seemed suspicious, but SEC investigation traced the volume to an investment newsletter distributed on Sep 9 that advocated purchasing ‘put’ options on AMR stock.

Sep 10: The new chief of a newly-created dedicated strategic assessment branch in the US Counterterrorism Center (CTC) reports for their first day on the job.

Sep 10: Stephen Hadley gathers the National Security Council deputies to finalize a three-phase multiyear plan to pressure and hopefully topple the Taliban leadership.

Sep 10: Stephen Hadley instructs CIA Director George Tenet to prepare new legal authorities for a “broad covert action program”…”authorizing a broad range of other covert activities, including authority to capture or use lethal force” against al Qaida.

Sep 10: Nawaf al-Hazmi and Khalid al-Mihdhar deposit $9,838.31 of their excess cash into a First Union account belonging to al-Mihdhar.

Sep 10: Nawaf al-Hazmi and Hani Hanjour send an express mail package containing the debit card linked to al-Mihdhar’s First Union account to a P.O. box in the UAE controlled by Mustafa al-Hawsawi. The receipt for this package was found in al-Hazmi’s car at IAD airport after 9/11

Sep 10: Mohamed Atta picks up Abdul Aziz al-Omari at another hotel, and the two drive to Portland, Maine for reasons that remain unknown. The two spend their last night pursuing ordinary activities: making ATM withdrawls, eating pizza, and shopping at a convenience store.

 

 

Sep 10: The three fellow AA Flight 11 hijackers stay together in a hotel in Newton, MA, just outside Boston.

Sep 10: The UA Flight 175 hijackers stay at two Boston hotels.

Sep 10: Head of security at the World Trade Center John O’neill, has dinner with a friend at Elaine’s. When asked about al Qaida, he said, “We’re due, and we’re due for something big…I don’t know when, but soon.”

 

 

A former counterterrorism official at the FBI, O’neill died in the attacks.

The Man Who Knew

 

From pbs.org

The primary opponent of the Taliban has been assassinated, supporting members have moved from Europe to Pakistan, and 19 men are in the US in position to attack America. Despite the best efforts of many in the Government, the attacks will begin tomorrow.

Editor’s note: Starting at 5:41 EDT I will be live-tweeting all events to the minute. There will be about 200 Tweets, and I will tweet them by hand. I appreciate your patience with any grammatical or spelling errors.

05:41 Atta and al-Omari arrive at PWM airport and check in for Colgan Air Flight 5930 to BOS. Atta checked two bags. At the ticket counter, Atta asked for his boarding pass for Flight 11 – when told he would have to check-in a second time at BOS, he clenched his jaw in anger.

6:00 Mohamed Atta and Abdulaziz al-Omari travel on Colgan Air Flight 5930 from Portland, Maine, to Boston, Massachusetts.

 

 

6:20 Hamza al-Ghamdi and Ahmed al-Ghamdi arrive at the United Airlines counter in Terminal C at BOS and check-in for UA175. Ahmed checks in two bags. They had trouble answering the security screening questions posed by the counter agent.

6:45 Marwan al-Shehhi arrives at BOS and checks in for UA175. He checks a single bag.

6:45 Waleed al-Shehri, Wail al-Shehri, and Satam al-Suqami arrive at BOS and check in for AA11. Wail al-Shehri and Suqami each check one bag.

6:45 Atta and al-Omari arrive at Boston Logan International Airport.

6:52 Marwan al-Shehhi calls Atta from another terminal at Logan to confirm that the plans for the attack are set.

6:53 Fayez Banihammad and Mohand al-Shehri arrive at BOS and check-in for UA175. Banihammad checks two bags.

7:00 (approx.) AA First Officer Lynn Howland is approached by Mohamed Atta, who asks her if she will be the pilot of AA11. She responds that she had just brought the aircraft in. Atta abruptly turns his back on her and walks away.

Atta then asks the gate agent if his bags would be loaded from his connection, but is informed due to the tight connection they would not be loaded.

7:03-7:39 Ziad Jarrah and his hijacking team arrives at Newark International Airport and check in for United Airlines UA93.

7:15 Khalid al-Mihdhar and Majed Moqed arrive at Washington Dulles International Airport and check in for AA77. Mihdhar is on the terrorism watch list, but that list is used to screen international and not domestic passengers.

7:18 al-Mihdhar and Moqed arrive at the security checkpoint at Washington Dulles International Airport. Both set off alarms and are consequently given a more thorough search.

7:23–7:28 Al-Shehhi and his hijacking team boards UA175. Banihammad sits in 2A, Mohand al-Shehri in 2B, Shehhi and Ahmad al-Ghamdi in 6C and 9D, and Hamza al-Ghamdi in 9C.

7:35-7:40 Atta and his hijacking team boards AA11. Atta is in seat 8D, al-Omari in 8G, Suqami in 10B, and Wail and Waleed al-Shehri are in 2A and 2B.

7:35 Hani Hanjour arrives at the security checkpoint Washington Dulles International Airport. He passes through the checkpoint without suspicion or setting off any alarms.

7:39–7:48 Ziad Jarrah and his hijacking team boards UA93.

7:39 (approx.) AA Flight Service Manager Michael Woodward conducts a final check. He locks eyes with Atta and later recalls feeling a chill when he sees Atta’s brooding look.

7:40 AA11 is pushed back from Gate B32 at Logan International Airport.

7:46 Jarrah calls al-Shehhi from Newark International Airport to also confirm the attacks were ready to begin.

7:50 Hanjour and his four fellow hijackers board AA77.

7:58 UA175 is pushed back from Gate C19 at Logan International Airport.

7:59 AA11, a Boeing 767 carrying 81 passengers and 11 crew, departs 14 minutes late from BOS to LAX.

 

8:00 President Bush has his daily intelligence briefing. The material is routine, mostly concerning Israeli-Palestinian issues. He calls Rice about one item, but there is no mention in the report of Osama bin Laden or al-Qaeda. Andrew Card says: “It should be an easy day.”

8:01 UA93 is pushed back from Gate A17 at Newark International Airport.

8:09 AA77 is pushed back from Gate D26 at Dulles International Airport.

8:13:35 AA11 has its last routine communication with the Federal Aviation Administration’s (FAA’s) Boston Air Route Traffic Control Center (“Boston Center”.)

8:13:52 Boston Center controller Pete Zalewski instructs AA11 to climb to 35,000 feet twice, but receives no rep1ly. He informs the Athens Sector controller that the flight is “NORDO” (no radio).

 

8:14 AA11 is hijacked when hijackers Waleed and Wail al-Shehri rise from seats 2A and 2B and stab flight attendants Karen Martin and Barbara Arestegui. Atta rises from seat 8D and approaches the cockpit.

Passenger Daniel Lewin rises from seat 9B and tries to stop Atta but is fatally stabbed by hijacker Satam al-Suqami, who sat in 10B. The hijackers also spray Mace in the first and business class cabins.

Flight attendant Amy Sweeney reports being shown a bomb by one of the hijackers.

8:14 UA175, another fully fueled Boeing 767, carrying 56 passengers and nine crew, also departs from BOS for LAX. Five hijackers are aboard.

 

8:17:59 Boston Center controllers hear a brief unknown sound on the frequency used by AA11. They didn’t know where it came from, and they couldn’t be certain, but it sounded like a scream.

8:19 Betty Ong, a flight attendant on AA11, alerts an American Airlines reservations center in Cary, North Carolina to the hijacking via an airphone: “[I’m] number 3 in the back.

The cockpit is not answering, somebody’s stabbed in business class—and I think there’s Mace—that we can’t breathe—I don’t know, I think we’re getting hijacked.” She then tells of the stabbings of two flight attendants.

8:20 AA77, a Boeing 757 with 58 passengers and 6 crew, departs from IAD for LAX. Five hijackers are aboard.

 

8:20 Boston Center flight controllers decide that AA11 has probably been hijacked.

8:21 AA11’s transponder signal is turned off, but the flight can still be tracked via primary radar by Boston Center.

8:24 A radio transmission comes from AA11: “We have some planes. Just stay quiet, and you’ll be okay. We are returning to the airport.” It is believed that Atta mistakenly held a button directing his voice to radio rather than to the plane’s cabin as he intended.

A few seconds later, Atta’s voice says, “Nobody move. Everything will be okay. If you try to make any moves, you’ll endanger yourself and the airplane. Just stay quiet.” Air traffic controllers hear the transmission.

8:25 Boston Center flight controllers alert other flight control centers regarding AA11. The North American Aerospace Defense Command (NORAD) is not yet alerted.

8:26:30 AA11 makes a 100-degree turn to the south, following the Hudson River toward New York City.

8:29:24 Boston Center alerts the neighboring Cleveland and New York ARTCCs regarding AA11. The flight’s position is estimated to be fifteen miles southwest of Albany.

8:33 UA175 reaches its assigned cruising altitude of 31,000 feet.

8:33:59 A third transmission from Atta onboard AA11: “Nobody move please. We are going back to the airport. Don’t try to make any stupid moves.”

8:34 Boston Center traffic manager Dan Bueno notifies the tower controller at Otis Air National Guard Base at Cape Cod of the hijacking of AA11. The controller directs Bueno to contact the northeast sector of NORAD. Two F-15 pilots begin to suit up.

8:37 UA175 confirms sighting of hijacked AA11 to flight controllers, 10 miles to its south.

8:37:52 Boston Center control notifies NEADS of the hijacking of AA11, the first notification received by NORAD that AA11 had been hijacked. The controller requests military help to intercept the jetliner.

8:37:30 AA11 begins a rapid descent at 3,200 feet per minute, starting from an altitude of 29,000 feet. This descent continues until the moment of impact with the North Tower. Half a minute later, having descended one thousand feet, the flight makes a slight southward turn.

8:41 The FAA’s New York Center requests information about AA11 over the radio. UA175 responds: “Ah, we heard a suspicious transmission on our departure out of Boston ah with someone ah, ah sounded like someone keyed the mike and said ah ‘everyone ah stay in your seats'”.

8:41 NEADS drives two fighter pilots at Otis Air National Guard Base to battle stations.

8:42 UA93, a Boeing 757, takes off with 37 passengers and 7 crew from EWR to SFO, following a 40-minute delay due to congested runways. Four hijackers are aboard.

 

8:42–8:46 (approx.) UA175 is hijacked.

8:43:30 While descending at 10,000 feet, AA11 makes a final turn, turning south-southwestward towards New York City, aiming for the World Trade Center.

8:44 Flight attendant Amy Sweeney, aboard Flight 11, reports by telephone to Michael Woodward at the American Airlines Flight Services Office in Boston, “Something is wrong. We are in a rapid descent. We are all over the place.”

A minute later, Woodward asks her to “describe what she sees out the window”. She responds, “I see the water. I see the buildings. I see buildings.” After a short pause, she reports, “We are flying low. We are flying very, very low. We are flying way too low.”

Seconds later she says, “Oh my God, we are way too low.” The call ends with a burst of very loud, sustained static.

8:44:05 Another flight in the area, US Airways Flight 583, reports to New York Center that it received a brief emergency locator transmitter signal on 121.5 MHz. Another flight, Delta Air Lines Flight 2433, confirms a minute later that they also picked up a “very faint” signal.

Though the signals usually activate when a plane has crashed, neither AA11 nor UA175 have crashed yet.

8:46:40 AA11 crashes at roughly 466 mph into the north face of the North Tower (1 WTC) of the World Trade Center, between floors 93 and 99.

The aircraft enters the tower intact. It plows to the building’s core, severing all three gypsum-encased stairwells, dragging combustibles with it. A powerful shock wave travels down to the ground and up again.

The combustibles and the remnants of the aircraft are ignited by the burning fuel. People below the severed stairwells start to evacuate, but no one above the impact zone is able to do so.

8:46:43 Chief of the New York City Fire Department’s 1st Battalion, Joseph Pfeifer, makes the first fire department radio message advising the FDNY Manhattan Fire Dispatch Office of the crash.

Chief Pfeifer and personnel from other fire companies were several blocks north, on the corner of Church Street and Lispenard Street investigating an odor of gas in the street, and witnessed the attack, along with Jules Naudet, who was accompanying the firefighters at the time.

8:46:48 Two F-15 fighter jets are ordered to scramble from Otis Air National Guard Base, intended to intercept AA11.

8:47:39 Boston Center and New York Center contact other flight controllers in the area, stating that they have lost AA11. Roughly a minute later, New York Center passes on information supplied by Kennedy Tower about a fire at the World Trade Center.

8:48–10:28 Some 100-200 people, primarily in the North Tower, trapped by fire and smoke in the upper floors, jump from the towers. One person at street level, firefighter Daniel Suhr, is hit by a jumper and dies.

8:48:08 WNYW breaks into a Paramount Pictures movie trailer for Zoolander to make the first broadcast report of an incident at the World Trade Center, less than two minutes after Flight 11’s crash.

One of the station’s camera crews, already out on location at City Hall Park that morning for New York’s mayoral primary election, takes the first live pictures of black smoke coming from the North Tower.

8:49 The first report of an incident at the World Trade Center crosses the Associated Press newswire.

8:49:34 The first network television and radio reports of an explosion or incident at the World Trade Center. CNN breaks into a Ditech commercial at 8:49. The CNN screen subtitle first reads “WORLD TRADE CENTER DISASTER”.

8:50: NEADS is notified that a plane has struck the World Trade Center as they continue to try to locate AA11 on radar.

8:50–8:54 (approx.) AA77 is hijacked.

8:51 A flight controller at the FAA’s New York Center notices that UA175 had changed its transponder code twice four minutes earlier; he tries to contact the flight.

Another flight in the area, Delta Airlines flight 1489, reports the sight of smoke coming from lower Manhattan to New York Center. This is the first word any pilots in flight receive of the incident.

8:51 UA175 comes within 300 feet of colliding with Delta Airlines Flight 2315. Later, it avoids another near-collision with Midwest Express Flight 7.

8:52 Lee Hanson receives a phone call from his son, Peter, a passenger on UA175, who says: “I think they’ve taken over the cockpit—an attendant has been stabbed—and someone else up front may have been killed. The plane is making strange moves. Call United Airlines—tell them…

it’s Flight 175, Boston to LA.” Also on board Flight 175, a flight attendant calls a United Airlines office in Chicago, reporting that the flight had been hijacked, both pilots had been killed, a flight attendant had been stabbed, and the hijackers were probably flying the plane.

8:52 The F-15s at Otis Air National Guard Base are airborne. Still lacking an intercept vector to AA11 (and not aware that it has already crashed), they are sent to military controlled airspace off Long Island and ordered to remain in a holding pattern until between 9:09 and 9:13

8:54 AA77 deviates from its assigned course, turning south over Ohio.

8:55 (approx.) An announcement is made over the building-wide PA system by officials in the still-undamaged South Tower of the World Trade Center, “The building is secure, please return to your desks.”

This announcement is reacted to in numerous ways, ranging from people going back to their offices as suggested, ignoring it and evacuating anyway, or congregating in common areas such as the 78th floor sky lobby.

8:55 President George W. Bush arrives at Emma E. Booker Elementary School in Sarasota, FL, as part of a scheduled visit to promote education and is reading The Pet Goat when White House Chief of Staff Andrew Card informs him that a small plane has crashed into the WTC.

8:56 Ten minutes after the North Tower of the World Trade Center was hit by AA11, the transponder on AA77 is turned off and even primary radar contact with the aircraft is lost. During radar blackout AA77 turns east, unnoticed by flight controllers.

When primary radar information is restored at 9:05, controllers searching for AA77 to the west of its previous position are unable to find it. AA77 travels undetected for 36 minutes on a course heading due east toward Washington, D.C.

8:58 Shehhi completes the final turn of UA175 towards New York City. In the next five minutes the flight is in a power dive, descending more than 24,000 feet at an average rate of 5,000 feet per minute.

8:59 UA175 passenger Brian Sweeney leaves a message via airphone to his wife Julie: Jules, this is Brian listen, I’m on an airplane that’s been hijacked. If things don’t go well, and it’s not looking good…

I just want you to know I absolutely love you, I want you to do good, go have good times, same to my parents and everybody, and I just totally love you, and I’ll see you when you get there. Bye, babe. I hope I call you.

وییس داره

9:00 Lee Hanson receives a second call from his son Peter, aboard UA175: “It’s getting bad, Dad. A stewardess was stabbed. They seem to have knives and Mace. They said they have a bomb. It’s getting very bad on the plane. Passengers are throwing up and getting sick. The plane…

is making jerky movements. I don’t think the pilot is flying the plane. I think we are going down. I think they intend to go to Chicago or someplace and fly into a building. Don’t worry, Dad. If it happens, it’ll be very fast. My God, my God.”

The call ends abruptly, as Lee Hanson hears a woman scream.

9:01–9:02 A manager from the FAA’s New York Center tells the Air Traffic Control System Command Center in Herndon, Virginia: “We have several situations going on here. It’s escalating big, big time. We need to get the military involved with us.”

9:01 FAA’s New York Center contacts New York terminal approach control and asks for help in locating UA175.

9:02 Evacuation of both World Trade Center towers is ordered by FDNY Battalion Chief Joseph Pfeifer, who was stationed in the lobby of the North Tower.

Although it is uncertain whether the South Tower’s deputy fire safety director receives this order, an announcement is made over the tower’s PA system to “begin an orderly evacuation if conditions warranted”.

9:03:02 UA175 crashes at about 590 mph into the south face of the South Tower (2 WTC) of the World Trade Center, between floors 77 and 85. Parts of the plane, including the starboard engine, leave the building from its east and north sides, falling to the ground six blocks away.

9:03 President Bush enters a classroom as part of his school visit.

9:03 FAA’s New York Center notifies NORAD (NEADS) of the hijacking of UA175 at the same time it crashes.

9:04 (approximately) The FAA’s Boston Air Route Traffic Control Center stops all departures from airports in its jurisdiction (New England and eastern New York State).

9:05 President Bush is about to begin reading The Pet Goat with the students when Chief of Staff Andrew Card interrupts to whisper to the president, “A second plane hit the second tower. America is under attack.”

The president stated later that he decided to continue the lesson rather than alarm the students.

9:06 The FAA begins imposing blanket temporary flight restrictions, with the first restriction banning takeoffs of all flights bound to or through the airspace of New York Center from airports in that Center and the three adjacent Centers—Boston, Cleveland, and Washington.

9:08 The FAA bans all takeoffs nationwide for flights going to or through New York Center airspace.

9:11 The last PATH train leaves the World Trade Center. The station was vacant when the towers collapsed.

9:13 The F-15 fighters from Otis Air National Guard Base leave military airspace near Long Island, bound for Manhattan.

9:14 President Bush returns to an adjacent classroom commandeered by the U.S. Secret Service. The classroom contains a telephone, a television showing the news coverage, and several senior staff members.

The president speaks to Vice President Dick Cheney, Condoleezza Rice, New York Governor George Pataki, and FBI Director Robert Mueller, and prepares brief remarks.

9:17 The FAA closes down all New York City-area airports.

9:19 United Airlines flight dispatcher Ed Ballinger begins sending warning text messages to his flights: “Beware any cockpit intrusion—Two a/c [aircraft] hit World Trade Center.” Because he was sending this warning to his 16 transcontinental flights, this takes several minutes.

9:21 All bridges and tunnels into Manhattan closed.

9:23 Ballinger’s warning message is sent to UA93, and is received in the cockpit a minute later.

9:24 The FAA notifies NORAD (NEADS) about the suspected hijacking of AA77. The FAA and NORAD establish an open line to discuss AA77, and shortly thereafter UA93.

9:25 The Otis-based F-15s establish an air patrol over Manhattan.

9:25 A video teleconference begins to be set up in the White House Situation Room, led by Richard A. Clarke, a special assistant to the president, that eventually includes the CIA, the FBI, the departments of State, Justice, and Defense, and the FAA.

9:26 The FAA bans takeoffs of all civilian aircraft regardless of destination—a national groundstop.

9:26 White House counterterrorism chief Richard Clarke indicates he gave the instruction to raise the worldwide force protection condition for U.S military bases at around this time.

9:26 UA93’s pilot, Jason Dahl, replies to Ballinger’s text message, “Ed, confirm latest mesg plz–Jason”.

9:28 Hijackers storm the cockpit on UA93 and take over the flight. The entry of the hijackers is overheard by flight controllers at Cleveland.

9:29 President Bush makes his first public statements about the attacks, in front of an audience of about 200 teachers and students at the elementary school. He states that he will be going back to Washington.

“Today, we’ve had a national tragedy,” he starts. “Two airplanes have crashed into the World Trade Center in an apparent terrorist attack on our country,” and leads a moment of silence.

No one in the President’s traveling party has any information during this time that other aircraft were hijacked or missing.

9:30 In the North Tower, six men escape express elevator Car 69-A. The elevator had gotten stuck at the 50th Floor when Flight 11 hit the tower.

With no exit at this floor, window cleaner Jan Demczur used his squeegee to cut a hole in the Sheetrock lining the elevator shaft, leading to an adjacent bathroom. They are found by firefighters, who immediately escort them to a stairwell.

All six successfully leave the tower five minutes before it collapses.

9:30 Reuters reports that a plane was hijacked from Boston.

9:32 A radio transmission from AA93 is overheard by flight controllers at Cleveland: “Ladies and gentlemen here. is the captain please sit down. Keep remaining sitting. We have a bomb on board. So sit.”

9:32 Controllers at the Dulles Terminal Radar Approach Control in Virginia observe “a primary radar target tracking eastbound at a high rate of speed”, referring to AA77.

9:33–9:34 A tower supervisor at Reagan National Airport tells Secret Service operations center at the White House that “an aircraft is coming at you and not talking with us,” referring to AA77.

The White House is about to be evacuated when the tower reports that AA77 has turned and is approaching Reagan National Airport.

9:34 The FAA’s Command Center relays information concerning UA93 to FAA headquarters.

9:35 The President’s motorcade departs from the elementary school, bound for Sarasota–Bradenton International Airport and Air Force One.

9:35 UA93 reverses direction over northeast Ohio and starts flying eastwards.

9:35 Based on a report that AA77 had turned again and was circling back toward the District of Columbia, the Secret Service orders the immediate evacuation of the Vice President from the White House.

9:36 Cleveland advises the FAA Command Center that it is still tracking UA93 and inquires whether someone had requested the military to launch fighter aircraft to intercept the aircraft.

9:37 Vice President Cheney enters a tunnel leading to the Presidential Emergency Operations Center, located under the White House East Wing.

9:37:46 AA77 crashes into the western side of the Pentagon at 530 mph and starts a major fire. The section of the Pentagon hit consists mainly of newly renovated, unoccupied offices. All 64 people on board are killed, as are 125 Pentagon personnel.

9:39 Another radio transmission is heard from Ziad Jarrah aboard UA93: “Uh, this is the captain. I would like you all to remain seated. We have a bomb on board and are going back to the airport, and to have our demands, so please remain quiet.”

9:40 Video teleconference in White House Situation Room begins with the physical security of the President, the White House, and federal agencies. They are not yet aware of the Pentagon crash.

9:41:15 The photo The Falling Man is taken.

 

9:42 Senior FAA traffic manager Ben Sliney issues the execution order for SCATANA grounding all air traffic over the United States and diverting any incoming international traffic to alternate destinations.

9:43 The White House and the Capitol are evacuated and closed.

9:45 United States airspace is shut down. No civilian aircraft are allowed to take off, and all aircraft in flight are ordered to land at the nearest airport as soon as possible.

Nearly all international flights headed for the U.S. are redirected to Canada, while some flights from South America were diverted to Mexico.

9:45 CNN receives initial reports that, in addition to a fire at the Pentagon, there is also a fire at the National Mall. These reports on the National Mall, however, are later proven to be false.

9:49 The FAA Command Center at Herndon suggests that someone at FAA headquarters should decide whether to request military assistance with UA93. Ultimately, the FAA makes no request before it crashes.

9:51 Chief Orio Palmer of the FDNY’s 7th Battalion reaches the 78th Floor Sky Lobby of the South Tower along with Fire Marshal Ronald Bucca. Palmer reports that there are two pockets of fire and numerous dead bodies.

9:52 The National Security Agency intercepts a phone call between a known associate of Osama bin Laden in Afghanistan and someone in the Republic of Georgia, announcing that he had heard “good news”, and that another target was still to be hit.

9:55 Air Force One leaves Sarasota-Bradenton International Airport.

9:57 Passenger revolt begins on UA93.

9:57 President Bush leaves Sarasota, Florida, on Air Force One. The plane reaches cruising altitude and circles for approximately 40 minutes while the destination of the plane is discussed.

9:59:00 The South Tower of the World Trade Center collapses, 56 minutes after the impact of UA175. Many think a new explosion has produced smoke and debris that now obscures it, but once the wind clears the smoke, it becomes clear that the building is no longer there.

9:59 As the South Tower collapses, FDNY chaplain Father Mychal Judge is struck and killed by falling debris on the lobby level of the North Tower. As Judge’s body is the first recovered and certified by the medical examiner’s office, he will be designated “Victim 0001” of 9/11.