Remembering 9/11

September 11 2001, terrorists crashed two aircrafts into the World Trade Center in a deadly series of blows that brought down the twin 110-story towers.

One of the worst terrorist attacks in history, the 9/11 attacks still bring the shivers to the people around the world.

Soon after the attack investigations across the world started and the Osama Bin Laden headed Al Qaida was believed to be responsible for the attack. Nine years on, the man behind the attack still walks free.

People cry at the grave site of Cesar Borja, the retired New York City police officer and first responder who was buried at Mount St. Mary's Cemetery in the Queens borough of New York, Saturday, Jan. 27. 2007. Borja died Tuesday from a lung ailment he believed was caused by his service at the World Trade Center site following the Sept. 11 attacks. (AP Photo)

A woman collects dust from the site of the World Trade Center attacks during a ceremony to mark the anniversary of the attack. (AP Photo)

Osama bin Laden is seen in this image broadcast Wednesday, April, 17, 2002. The Arabic Satellite station MBC reported the tape was delivered to them. The tape aired by MBC was a montage of various materials, including old statements from Bin Laden and his aides and images of the falling World Trade Center towers. The tapes appeared to be different. Bin Laden's whereabouts are unknown. (AP Photo)

Ground zero workers gather at the base of the last remaining support column from the collapsed south tower of the World Trade Center in New York. The spray-painted sign "PAPD 37" at the top of the column stands for Port Authority Police Department and the 37 people the Port Authority, who managed the trade towers, lost in the Trade Center attacks, according to a New York Office of Emergency Management spokesperson. (AP Photo)

Excavation equipment continues to work through the night under floodlights, uncovering hot spots at the still smoldering World Trade Center more than a month after the attacks. (AP Photo)

Initially, city officials had said 4,979 people were missing from the Sept. 11 terrorist attacks. Finally the death toll was calculated to be close to 3000. (AP Photo)

An aerial view of the site taken Sept. 23, 2001, shows the destruction of the Sept. 11 terrorist attacks on the World Trade Center. (AP Photo)

A red crane looms over the smoldering wreckage of World Trade Center Building 7 on Tuesday, Sept. 18, 2001 as the rescue and cleanup effort continues one week after the terrorist attack. Mayor Rudolph Giuliani said there was virtually no hope left of finding any of the missing souls alive. Meanwhile, investigations had started around the world. (AP Photo)

A flag is positioned in Indianapolis one week to the minute from the time the first airplane crashed into the World Trade Center. Firefighters and police officers from across Indiana gathered to bid farewell to those comrades who died trying to save others in the terrorist attacks in New York. (AP Photo)

New York City police officer Graziano stands guard at a checkpoint on the corner of Nassau and Liberty in the financial district of Manhattan. Visible on barrier is the front page of the New York Post with a photograph of Osama bin Ladin and the headline reading: "Wanted Dead or Alive." (AP Photo)

President Bush's Chief of Staff Andy Card whispers into the ear of the President to give him word of the plane crashes into the World Trade Center, during a visit to the Emma E. Booker Elementary School in Sarasota, Florida (AP Photo)

The south tower of New York's World Trade Center, left, begins to collapse after the attack. Federal investigators believe the second World Trade Center tower fell much more quickly than the first because it faced a more concentrated, intense fire inside, officials said. Investigators have singled out this photograph that they said may provide evidence to support their theory which shows a "kink" in the building's corner at the 106th floor. (AP Photo)

A person falls from the north tower of New York's World Trade Center Tuesday Sept. 11, 2001. Several people jumped off the buildings in an attempt to save their lives before the twin 110-story towers collapsed. (AP Photo)

Deputy U.S. marshal Dominic Guadagnoli helps a women after she was injured in the attack. (AP Photo)

A jet crashes into the World Trade Center. Terrorists crashed two planes into the World Trade Center, and the twin 110-story towers collapsed Tuesday morning. (AP Photo)

Dust and debris cloud the air near the site of the attack. The dust from the collapse took several hours to settle down in the area. (AP Photo)

Smoke billows from one of the towers of the World Trade Center and flames and debris explode from the second tower. (AP Photo)

The south tower of New York's World Trade Center, left, begins to collapse after the attack on the buildings. (AP Photo)

The image shows the impact of the hijacked plane on the World Trade Center. The intensity of the attack which eventually brought the buildings down surprised even its perpetrators. (AP Photo)

Smoke billows out of the burning World Trade Center towers before their collapse 11 September, 2001 in New York. (AFP Photo)

A plane engine and other debris recovered from the World Trade Center site sits next to the torso of a bronze statue by French sculptor Auguste Rodin. (AFP Photo)

This photo taken 11 September 2001 shows mannequins on the floor of the Brooks Brothers' shop in New York near the World Trade Center after the twin towers collapsed. The store has been turned into a temporary morgue. (AFP Photo)

An American flag flies in the foreground as one of the World Trade Center towers burns in the background on 11 September 2001 in New York. (AFP Photo)

A part of a tower can be seen after the collapse of the first World Trade Center Tower. (AFP Photo)

People run as the top of one of the World Trade Center towers collapses. (AFP Photo)

This file photo shows Marcy Borders covered in dust as she takes refuge in an office building after one of the World Trade Center towers collapsed in New York. Borders was caught outside on the street as the cloud of smoke and dust enveloped the area. The woman was caught outside on the street as the cloud of smoke and dust enveloped the area. (AFP Photo)

Fire and rescue workers search through the rubble of the World Trade Center on 13 September 2001. (AFP Photo)

Pedestrians run from the scene as one of the World Trade Center Towers collapses 11 September, 2001 in New York following a terrorist plane crash on the twin towers. (AFP Photo)