2nd » NATO backs U.S. military strikes following 9/11.
4th » NATO confirms invocation of Article 5 of the North Atlantic Treaty.
4th » Siberia Airlines Flight 1812: a Sibir Airlines Tupolev Tu-154 crashes into the Black Sea after being struck by an errant Ukrainian SA-5 Gammon e.g S-200 missile. 78 people are killed.
7th » The War in Afghanistan (2001–present) called U.S. invasion of Afghanistan begins with an air assault and covert operations on the ground.
8th » A twin engine Cessna and Scandinavian Airlines System (SAS) jetliner Linate Airport disaster e.g collide in heavy fog during takeoff from Milan, Italy killing 118 people.
8th » President of the United States named U.S. President George W. Bush announces the establishment of the United States Department of Homeland Security e.g Office of Homeland Security.
9th » Second mailing of anthrax letters from Trenton, New Jersey known as Trenton, New Jersey in the 2001 anthrax attack.
11th » The Polaroid Corporation files for federal bankruptcy protection.
19th » SIEV-X, an Indonesian fishing boat en route to Christmas Island, carrying over 400 asylum seekers, sinks in international waters with the loss of 353 people.
26th » The United States passes the USA PATRIOT Act into law.