Donald Rumsfeld
The United States was attacked on September 11, 2001 by al Qaeda terrorists who hijacked commercial airliners and crashed them in coordinated strikes into both towers of the World Trade Center in Lower Manhattan, New York City and the Pentagon in Washington, D.C. The fourth plane crashed into a field in Shanksville, Pennsylvania, and its target was likely a prominent building in Washington, D.C., most probably either the Capitol Building or the White House. Within three hours of the start of the first hijacking and two hours after American Airlines Flight 11 struck the World Trade Center, Rumsfeld raised the defense condition signaling of the United States offensive readiness to DEFCON 3, the highest it had been since the Arab-Israeli war in 1973.
Ziad Jarrah
On the morning of September 11, 2001, Jarrah, Saeed al-Ghamdi, Ahmed al-Nami and Ahmed al-Haznawi boarded United Airlines Flight 93 from Newark International Airport at gate A17 without incident, and sat in first-class seats near the cockpit. Before boarding, Ziad Jarrah called his girlfriend, Aysel Sengün, from a public telephone at the airport, repeating the words 'I love you' over and over. Due to the flight's delay, the plane took off at 8:41 am, five minutes before American Airlines Flight 11 crashed into the World Trade Center. The pilot and crew were notified of the first two hijackings that day, and were told to be on the alert. Within minutes, around 9:28 am, Flight 93 was hijacked as well. The 9/11 Commission stated that Jarrah was the pilot.