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.
Ahmed Ajaj
Incarcerated from September 2, 1992, Ajaj remained in contact with Yousef and other co-conspirators and continued to be involved in the World Trade Center bombing plot. Ajaj never contacted Yousef directly. Calls were patched through "Big 5 Hamburgers" in Dallas, rendering law enforcement detection more difficult. The calls were not translated until long after the WTC bombing.