President George Bush visits ground zero on Sept. 14, 2001, as firefighter Bob Beckwith and other weary workers continue rescue efforts in the rubble of the World Trade Center. "The people who knocked these buildings down will hear from all of us soon," Bush said while standing atop a fire truck. The recovery task was particularly painful for New York's police and firefighters, who lost many of their own.
From left, New York Gov. George Pataki, New York City Mayor Rudolph Giuliani and U.S. Senator Hillary Rodham Clinton tour the site of the World Trade Center disaster on Sept. 12.
American citizen Hassan Awdah, a native of Yemen, owner of the Marathon gas station in Gary, Ind., stands behind a bulletproof glass shot several times by an assailant with high-power rifle on Sept. 12, 2001. Harassment and hate crimes plagued the Muslim community and other ethnic groups following Sept. 11.
People gather for a candlelight vigil at Union Square in New York City, Sept. 14, 2001. Citizens across the nation remembered victims of the terrorist attacks with flowers, candles, flags flown at half-staff and moments of quiet reflection.
Firefighter Tony James cries during a funeral service for New York Fire Department Chaplain Rev. Mychal Judge, Sept. 15. Judge died when he was hit by debris while giving the last rites to a fireman in the collapse of the World Trade Center.
An FBI crime scene investigator points to a fingerprint as a response team gathers evidence at a Delray Beach, Fla., condominium where terrorist suspects in the World Trade Center and the Pentagon attacks lived, Sept. 16, 2001. Federal and local law enforcement issued many search and arrest warrants around the world in the week following the 9/11 attacks.
With the U.S. preparing for a strike on Afghanistan and seeking help from other countries, neighboring Pakistan quickly became a key player in the terrorist crisis. The Pakistani government's pledge to assist the U.S. spawned angry protests in the streets of Islamabad, Karachi and elsewhere. Supporters of al-Qaida leader and Saudi dissident Osama bin Laden chanted anti-American slogans and burned the U.S. flag.
Rescue workers work late Sept. 18 in Washington, D.C., sifting through piles of debris from the section of the Pentagon hit by a hijacked plane.
This video image from Portland International Jetport released by the Portland, Maine, police on Sept. 19 reportedly shows suspected hijackers Mohammed Atta, right, and Abdulaziz Alomari, center, as they pass through airport security Sept. 11, at 5:45 a.m. Authorities said the two men boarded a commuter flight to Boston before connecting to American Airlines Flight 11, one of four jetliners hijacked on Sept. 11. Flight 11 was deliberately crashed into the World Trade Center.
Miriam Horrocks, seated, with 6-year-old son Michael, is presented with the U.S. flag by a U.S. Marine Corps honor guard following a funeral Mass on Sept. 17 in Media, Pa., for her late husband. Michael Horrocks, 38, was killed when hijacked United Airlines Flight 175, which he was co-piloting, crashed into the south tower of the World Trade Center.
A group of anti-war protesters hold signs and chant in New York's Times Square, Sep. 21, 2001.
New York Mayor Rudolph Giuliani, center, gives a thumbs-up to traders on the floor of the New York Stock Exchange, Sept. 17, 2001, before helping ring the opening bell. "God Bless America" was sung before the bell, as the stock exchange opened for the first time since the terror attacks.
Rescue workers continue their efforts Sept. 24, 2001, at the site of the World Trade Center attack.