911 x 10

In this Monday, July 25, 2011 photo, Vladimir Gavriushin sits at the grave he built for his daughter Yelena in a cemetery outside Vilnius, Lithuania. Yelena was one of the nearly 3,000 people killed on Sept. 11, 2001. Gavriushin has buried rocks from ground zero under these tombstone towers, far from the place Yelena died _ a place he can no longer afford to visit. And so, as the 10-year anniversary of the terrorist attacks approaches, he mourns for her here, at his own ground zero.

Andrew Kinard, a Marine lieutenant, lost both legs in an I.E.D. attack two months into his first tour in Iraq, in 2006. Now he’s at Harvard, pursuing a joint law and business degree. He was photographed at his summer internship, at the Fortress Investment Group. (Christopher Anderson)

In a May 23, 2011 photo, Sukhwinder Singh sits next to the memorial for his father, Balbir Singh Sodhi, in Mesa, Arizona. Singh's father was shot and killed in front of the family owned gas station as he was placing flowers at a makeshift memorial the family set up shortly after the 9/11 attacks in 2001. The Sikh was killed during the anti-muslim backlash after the 9/11 attacks. Some have objected to including Balbair Singh Sodhi's name on a Phoenix Sept. 11 memorial, saying he was not a victim of the attack.

A police officer stands guard in New York's Times Square as the ABC news ticker displays news of an al-Qaida terror threat, Friday, Sept. 9, 2011. Just days before the 10th anniversary of the Sept. 11 attacks, U.S. counterterrorism officials are chasing a credible but unconfirmed al-Qaida threat to use a car bomb on bridges or tunnels in New York City or Washington. It is the first "active plot" timed to coincide with the somber commemoration.

(L-R) New York Mayor Michael Bloomberg, Janice Fedarcyk, assistant director in charge New York Field Office for the FBI, and New York Police Commissioner Ray Kelly speak to media about a threat in New York September 8, 2011. President Barack Obama on Thursday ordered a redoubling of U.S. counter-terrorism efforts in the face of a "credible but unconfirmed" threat ahead of the 10th anniversary of the Sept. 11, 2001 attacks. Reuters

New York City police officers stop a commercial truck at a checkpoint in New York's financial district, Friday, Sept. 9, 2011. U.S. officials said Thursday that they were chasing a credible but unconfirmed al-Qaida threat to use a car bomb on bridges or tunnels in New York or Washington. Police Commissioner Raymond Kelly said that police are beefing up security at bridges and tunnels, setting up vehicle checkpoints and doing bomb sweeps of parking garages. (Mark Lennihan)

The U.S. embassy in Paris during a ceremony to pay tribute to the victims of the 9/11 attacks, Friday, Sept. 9, 2011, ahead of the 10-year anniversary of the Sept. 11, 2001 terror attacks on Sunday. (Charles Platiau)

Construction workers install model twin towers representing the towers of the World Trade Center in preparation to commemorate the 10 anniversary of the Sept. 11 this Sunday, at Trocadero plazamin Paris Friday Sept. 9, 2011. The Eiffel tower is seen in the background. The towers will be finished on Saturday in advance of the commemoration on upcoming Sunday. (Michel Euler)

Workers at the new Flight 93 National Memorial work on final preparations for Saturday's dedication ceremony Sept. 8. 2011 in Shanksville, Pa.. The boulder in the background marks the location of the crash crater. Sunday will mark the tenth anniversary of the attacks of Sept. 11, 2001. (Gene J. Puskar)

Family members of police officers killed during or as a result of the 9/11 terrorist attacks stand to be recognized during a ceremony in New York, Thursday, Sept. 8, 2011. (Seth Wenig)

This Tuesday, Aug 16, 2011 photo shows Michael Lewin in his office in the town of Lod, central Israel. His brother, Daniel Lewin, was killed during the Sept. 11, 2001 attacks on the United States. Daniel's family honors his memory with a traditional Jewish yahrzeit, an annual memorial observance of a loved one's death. They talk about his life and study the Torah, the Hebrew Bible, in his name. Over the years, Michael has visited ground zero several times on business trips to New York.

ADVANCE FOR USE LABOR DAY WEEKEND, SEPT. 3-5, 2011 AND THEREAFTER - This Wednesday, Aug. 10 2011 photo shows a tent which houses a chapel and a storage of the remains of victims of the attacks on the World Trade Center near Chief Medical Examiner Office Forensic Biology Lab in New York. (Mary Altaffer)

ADVANCE FOR USE LABOR DAY WEEKEND, SEPT. 3-5, 2011 AND THEREAFTER - This Wednesday, Aug. 10 2011 photo shows posters on a wall of the garden behind a tent which houses a chapel and a storage of the remains of victims of the attacks on the World Trade Center near Chief Medical Examiner Office Forensic Biology Lab in New York. (Mary Altaffer)

FILE - In this Sept. 2001 file photo, dust still covers the streets near ground zero as Associated Press photographer Amy Sancetta pushes her bike on the streets a few days after the terrorist attacks in New York. On Sept. 11, 2001, the Ohio-based national photographer was in New York City to cover her tenth the U.S. Open Tennis tournament. The desk had a report that a plane might have hit one of the World Trade Center towers, so she caught a cab downtown.

FILE - In this Tuesday, Sept. 11, 2001 file photo, pedestrians in lower Manhattan watch smoke rise from the World Trade Tower after an early morning terrorist attack on the New York landmark. Television brought the 2001 attacks to the world in real time, and forever linked the thousands who lived through it and the millions who watched. It became a collective experience, and, from every angle, one of the most digitally documented events ever. And so it remains. (Amy Sancetta, file)