Hani Hanjour arrived in the United States. He later piloted American Airlines Flight 77 into the Pentagon as part of the September 11 attacks.

Hanjour applied to the civil aviation school in Jeddah, Saudi Arabia, with the intention of becoming a commercial pilot for Saudia, but he was rejected.

Hanjour returned to Saudi Arabia after being certified as a pilot, but left again in late 1999, telling his family he was going to the United Arab Emirates to work for an airline, but likely went to Afghanistan, where Al-Qaeda recruits were screened for special skills they might have.

Hanjour earned his FAA commercial pilot's certificate at the CRM Airline Training Center in Scottsdale, Arizona, indicating his progress toward becoming a pilot.

Alec Station discovered that al-Hazmi and al-Mihdhar had multiple-entry visas to the United States, marking a crucial intelligence discovery related to the future hijackers.

Hanjour arrived in San Diego, joining

Hanjour and Hazmi left for Mesa, Arizona, where Hanjour began refresher training at Arizona Aviation, indicating further steps in their preparation.

Hanjour and Hazmi relocated to Falls Church, Virginia, awaiting the arrival of the remaining

Majed Moqed arrived with Flight 175 hijacker Ahmed al-Ghamdi from Dubai at Dulles International Airport and moved into an apartment with Hazmi and Hanjour.

Hanjour rented a room in Paterson, New Jersey, where he stayed with other hijackers through the end of August, indicating a gathering point for the team.

Salem al-Hazmi arrived with Abdulaziz al-Omari (a hijacker of Flight 11) at John F. Kennedy International Airport from the United Arab Emirates and stayed with Hanjour.

Hanjour moved out of the room in Paterson and arrived at the Valencia Motel in Laurel, Maryland, indicating a change in location shortly before the attacks.

Hanjour completed a certification flight, using a terrain recognition system for navigation, at Congressional Air Charters in Gaithersburg, Maryland.

Nawaf al-Hazmi, accompanied by other hijackers, checked into the Marriott in Herndon, Virginia, near Dulles Airport, marking their final preparations before the attack.

American Airlines Flight 77, en route from Dulles to Los Angeles, was hijacked by five al-Qaeda terrorists. The terrorists took control of the plane approximately 31 minutes after takeoff.

Flight 77 reached its assigned cruising altitude of 35,000 feet, coinciding with the crash of Flight 11 into the North Tower of the World Trade Center.

The final communication between Flight 77 and air traffic controllers occurred, shortly before the terrorists began their assault.

Flight attendant Renee May made a phone call to her mother, reporting that six people had forced everyone to the rear of the airplane.

Barbara Olson made a call to her husband Ted, explaining that the plane had been hijacked and that the hijackers were armed with knives and box cutters.

American Airlines Flight 77 crashed into the Pentagon in Arlington County, Virginia, killing all 64 people on board and 125 in the building.

The upper floors of the damaged area of the Pentagon collapsed due to the damage inflicted by the aircraft and ignited jet fuel.

Fairfax County Urban Search and Rescue Team members found an

Paramedics and firefighters located the two black boxes near the punch out hole in the A–E drive, nearly 300 feet (91 m) into the building.

The ACFD relinquished control of the crime scene to the FBI, marking a transition in the investigation process.

The search for evidence and remains was completed, and the site was turned over to Pentagon officials.

Defense Secretary Donald Rumsfeld and General Richard Myers dedicated the Victims of Terrorist Attack on the Pentagon Memorial at Arlington National Cemetery, honoring those for whom no identifiable remains were found.

The Department of Defense released security camera footage of American Airlines Flight 77 crashing into the Pentagon, providing visual evidence of the event.

The Pentagon Memorial, a permanent outdoor memorial to the 184 people who died in the building and on American Airlines Flight 77, opened to the public.