Investigators head to United 93's crash near Shanksville, Pennsylvania.

The last flight still in the air above the continental United States lands. In two and a half hours, U.S. airspace has been cleared of an estimated 4,500 commercial and general aviation planes.

Secretary of State Colin Powell boards a plane in Lima, Peru, heading to Washington, D.C.

President Bush makes statements about the attacks "freedom itself was attacked this morning by a faceless coward and freedom will be defended." He also said that the "United States will hunt down and punish those responsible for these cowardly acts."

Jets scrambled from Elmendorf Air Force Base (Alaska) to shadow Korean Air Flight 85.

Dust and destruction in New York City.

Rescue operations at the Pentagon.

At a press conference New York Mayor Rudy Giuliani is asked to estimate the number of casualties at the World Trade Center. He replies, "More than any of us can bear."

President Bush arrives at Offutt Air Force Base, Bellevue, Nebraska, to convene a National Security Council teleconference via the U.S. STRATCOM bunker.

Korean Air Flight 85 lands safely in Whitehorse, On the tarmac, Flight 85 was greeted by armed Royal Canadian Mounted Police officers who, after interrogating the pilots, learned the whole ordeal was caused by a translation error.

National news outlets start to report that high officials in the federal intelligence community are stating that Osama bin Laden is suspect number one.

President George W. Bush departs Offutt Air Force Base on borad of Air Force One, bound for Washington, D.C.

7 World Trade Center collapses.

Darkness in New York City.

U.S. President George W. Bush is in Washington D.C

Into the night.

Members of Congress join on the steps of the United States Capitol and sing "God Bless America".

President George Bush, Vice President Dick Cheney and senior staff in the President's Emergency Operations Center in the White House.

U.S. President George W. Bush addresses the country from the Oval office in the White House, D.C. "The search is underway for those who are behind these evil acts...we will make no distinction between the terrorists who committed these acts and those who harbor them."

The attacks resulted in 2,977 fatalities and over 25,000 injuries.