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Timeline: In Terror's Wake

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In Terror's Wake

A look at the major developments following the terrorist attacks of Sept. 11, 2001.

Sept. 11, 2001

Terrorists hijack four jetliners and crash them into the World Trade Center, the Pentagon and a Pennsylvania field. The twin towers and 7 World Trade Center collapse.

Sept. 13, 2001

Osama bin Laden identified as prime suspect in the attack.

Sept. 14, 2001

Nineteen hijackers identified and linked directly to bin Laden.

Sept. 17, 2001

Wall Street trading resumes, ending stock market's longest shutdown since the Great Depression. Dow loses 684.81 points, its worst-ever one-day point drop.

Oct. 7, 2001

First air strikes launched in Afghanistan. Bin Laden, in videotaped message, praises God for Sept. 11 attacks.

Oct. 26, 2001

President Bush signs anti-terrorism bill giving police unprecedented ability to search, seize, detain and eavesdrop in pursuit of possible terrorists.

Nov. 25, 2001

First wave of Marines lands near Taliban stronghold of Kandahar.

Dec. 22, 2001

Hamid Karzai and his transitional government sworn in to lead Afghanistan.

Nov. 25, 2002

President Bush signs legislation creating Department of Homeland Security.

Nov. 27, 2002

President Bush signs bill establishing independent commission to investigate the Sept. 11 attacks.

Dec. 11, 2002

Congressional inquiry issues final report on intelligence failures leading up to terrorist attacks. Key recommendations include creating Cabinet-level director of national intelligence.

Jan. 1, 2003

Thousands of newly hired government workers begin screening every checked bag at the nation's commercial airports for explosives.

Feb. 19, 2003

Moroccan student Mounir el Motassadeq receives maximum 15-year sentence in Germany for helping Sept. 11 hijackers. It was the first conviction tied to the terror plot and was later overturned.

Motassadeq was subsequently convicted of belonging to a terrorist organization and sentenced to seven years. He was acquitted of more than 3,000 counts of being accessory to murder. He is released from prison in February 2006 when a German federal court rules he shouldn't be jailed with appeals pending.

Feb. 27, 2003

Architect Daniel Libeskind's Freedom Tower plan, including a 1,776-foot spire and sunken memorial, chosen for rebuilding trade center.

March 3, 2003

Design announced for Pentagon memorial, with 184 benches - each placed over an individual reflecting pool - inscribed with a victim's name.

March 31-April 1, 2003

The 9/11 Commission holds first public hearings, a half mile from ground zero.

Aug. 28, 2003

The Port Authority releases 2,000 pages of transcripts from emergency calls and radio transmissions following attacks.

Nov. 6, 2003

Firehouse across from World Trade Center re-opens.

Jan. 23, 2004

The New York City Medical Examiner places final death toll from trade center attacks at 2,749.

June 16-17, 2004

9/11 Commission concludes 20 months of investigation with a preliminary report that fails to find "credible evidence" of collaboration between Iraq and al Qaeda on attacks.

July 22, 2004

9/11 Commission delivers final report to President Bush; its key findings include the failure of the Bush and Clinton administrations to make anti-terrorism a top priority.

Dec. 17, 2004

President Bush signs Intelligence Reform Act, a historic overhaul of the national intelligence system.

April 22, 2005

Zacarias Moussaoui, the only person indicted in the U.S. for the attacks, pleads guilty to conspiring with the Sept. 11 hijackers. He is sentenced to six life terms to run as two consecutive life sentences in May 2006.

Sept. 7, 2005

A design is chosen for the Flight 93 National Memorial in Pennsylvania. The design pays tribute to the heroic struggle by passengers who thwarted an attack on the nation's capital.

Sept. 26, 2005

Syrian-born businessman Imad Yarkas was sentenced to 27 years in prison for leading an al Qaeda cell and conspiring to commit murder in the Sept. 11 attacks. Yarkas conviction was overturned on appeal in April 2006, though a separate conviction of leading a terrorist cell was upheld, and Yarkas was sentenced to 12 years in prison.

A second man, Ghasoub al-Abrash Ghalyoun, was acquitted of all charges of collaborating with a terrorist group.

March 28, 2006

Construction workers near the World Trade Center site discover more bone fragments and human remains. In September, hundreds more fragments are found on the roof of the former Deutsche Bank building.

May 16, 2006

The Pentagon releases the first video images of American Airlines Flight 77 crashing into the military headquarters.

May 23, 2006

Opening of 7 World Trade Center, the third building to fall on Sept. 11 and the first to be rebuilt.

June 28, 2006

Final design for the Freedom Tower to be built at ground zero is formally unveiled. The tower will be the centerpiece of the rebuilding of the World Trade Center in downtown Manhattan. It is estimated the tower will be completed in 2012 or 2013.

Sept. 5, 2006

A new study by Mount Sinai Medical Center reports that almost 70 percent of rescue workers who were at Ground Zero have developed symptoms of respiratory illness. This feeds long-standing criticism that not enough has been done to address these workers' health issues.

Sept. 11, 2006

The fifth anniversary of the terrorist attacks are marked at the World Trade Center site, at the Pentagon, and around the world.

Dec. 19, 2006

The first steel columns are installed in the Freedom Tower's foundation.

Aug. 18, 2007

A fire in the abandoned Deutsche Bank office building at the edge of Ground Zero claims the lives of two firefighters, and revives criticism of the slow pace of rebuilding on the WTC site, and charges of improper handling of a building long considered to be one of the most contaminated in the U.S.

April 20, 2008

Pope Benedict XVI visited ground zero as part of his first pilgrimage to the U.S. as pope. Benedict prayed silently, lit a candle and offered words of prayer. Following the prayer, he blessed the ground in all four directions and then blessed those gathered. He also personally greeted some family members of those who died on Sept. 11, survivors, and first responders.

Sept. 2, 2008

Construction workers installed the first steel column for the Sept. 11 memorial at ground zero. The 7,700-pound column was erected by the footprint of the World Trade Center's north tower. The "Reflecting Absence" memorial will set two giant pools over the twin towers' footprints.