1966    A fire at a building in New York, New York kills 12 firefighters, the New York City Fire Department's deadliest day until the September 11, 2001 attacks.

2001    Civilian aircraft traffic resumes in the U.S. after the September 11, 2001 attacks.

2001    Historic National Prayer Service held at Washington National Cathedral for victims of the September 11 attacks. A similar service is held in Canada on Parliament Hill, the largest vigil ever held in the nation's capital.

2002    The United States House of Representatives votes not to create an independent commission to investigate the September 11 attacks.

2004    The Arabic news network Al Jazeera broadcasts an excerpt from a video of Osama bin Laden in which the terrorist leader first admits direct responsibility for the September 11, 2001 attacks and references the 2004 U.S. presidential election.