Dawn breaks over the World Trade Center site on the sixth anniversary of the Sept. 11 attacks, Tuesday, Sept. 11, 2007 in New York.
The first group of families of victims walk into ground zero during ceremonies at the World Trade Center site, in New York Sept. 11, 2007, marking the sixth anniversary of the Sept. 11, 2001 attacks.
A New York City Police officer stands by flowers left in a reflecting pool at the base of the World Trade Center site on the sixth anniversary of the Sept. 11 attacks in New York, Tuesday, Sept. 11, 2007.
An American flag inscribed with the names of the victims of the Sept. 11 attacks flies at the 9/11 memorial field near the eternal flame and the globe saved from the World Trade Center Site on the sixth anniversary of the terrorists attacks on the World Trade Center, Tuesday, Sept. 11, 2007, in New York.
A man searches through names on an American flag during a ceremony commemorating the 9/11 terrorist attacks at the World Trade Center site Tuesday, Sept. 11, 2007, in New York. Tuesday marked the sixth anniversary of the September 11, 2001 terror attacks, when terrorists hijacked airliners and flew them in the World Trade Center and the Pentagon and one hijacked plane crashed in Pennsylvania.
People hold pictures of loved ones lost in the Sept. 11 attacks above their umbrellas during a ceremony marking the sixth anniversary of the Sept. 11 attacks, Tuesday, Sept. 11, 2007, on a rainy day in New York.
Visitors to the Flight 93 National Memorial participate in a sunrise memorial, in Shanksville, Pa., on Tuesday, Sept. 11, 2007, the sixth anniversary of the crash.
Tom DeSimone of Malden, Mass., participates in a sunrise memorial at the United Airlines Flight 93 National Memorial in Shanksville, Pa., Tuesday, Sept. 11, 2007, marking the sixth anniversary of the September 11 attacks.
A group of cheerleaders from North Plainfield, N.J. places flags at the Flight 93 National Memorial in Shanksville, Pa., Tuesday, Sept. 11, 2007, the sixth anniversary of the crash here.
President Bush and first lady Laura Bush are joined by Vice President Dick Cheney and his wife, Lynne Cheney, as they arrive for a ceremony marking the sixth anniversary of the Sept. 11 terrorist attacks, Tuesday, Sept. 11, 2007, on the South Lawn of the White House in Washington.
President Bush and first lady Laura Bush are joined by Vice President Dick Cheney and his wife, Lynne Cheney, as they stand with White House staff and members of Congress as they take part in a moment of silence, marking the sixth anniversary of the Sept. 11 terrorist attacks, Tuesday, Sept. 11, 2007, on the South Lawn of the White House in Washington.
A memorial flag is illuminated near the spot on the side of the Pentagon that was hit by American Airlines Flight 77 on 9/11, September 11, 2007 in Washington.
A soldier stands near a stone inscribed with September 11, 2001 on the wall of the Pentagon building, to commemorate the terror attack, during a memorial service at the Pentagon Tuesday, Sept. 11, 2007, in Arlington, Va. The service was held to honor the 125 military and civilian lives lost during the 2001 terror attack on the Pentagon.
Defense Robert Gates, left, and outgoing Joints Chief Chairman Gen. Peter Pace, right, take part in a Wreath Laying and Observance Ceremony marking the sixth anniversary of the Sept. 11 terrorist attacks, Tuesday, Sept. 11, 2007, at the Pentagon.
New York City firefighters hold a giant American flag that was damaged in the terrorist attacks, during a ceremony marking the sixth anniversary of the attacks Tuesday, Sept. 11, 2007 in New York.
Families of victims walk into and out of ground zero during ceremonies at the World Trade Center site Tuesday, Sept. 11, 2007 in New York marking the sixth anniversary of the Sept. 11, 2001 attacks.
A person sitting in an area designated for family members of victims of the Sept. 11 attacks clutches a portrait during an anniversary ceremony, Tuesday, Sept. 11. 2007, in New York.
Mazie Lawson, right, is comforted by her granddaughter Courtney Lawson, during a Sept. 11, 2001 memorial service, Tuesday, Sept. 11, 2007, at the Pentagon. Mazie's daughter Cecelia E. Richard, a Department of the Army employee, was killed on Sept. 11, 2001, when American Airlines Flight 77 crashed into the Pentagon.
The "Tribute in Light" marks the September 11 Anniversary in New York seen from Bayonne, N.J. on Tuesday, Sept. 11, 2007.