And along the way he scorns Mr Bush's decision to remain in the school classroom for seven minutes after being told that the World Trade Center had been attacked.

BBC: NEWS | Middle East | Bin Laden's October surprise

They tunnel down through the debris of the World Trade Center complex into the seven-story basement that once housed a bustling retail mall, subway station, and commuter train station.

CNN: workers

The bodies of seven more firefighters pulled from the rubble of the World Trade Center have been identified.

CNN: President Bush

The museum's main exhibition space is seven stories beneath street level, and incorporates the foundations of the World Trade Center.

WSJ: Protecting 9/11 Artifacts From Floods

The recovery of bodies from the rubble of the World Trade Center was disrupted by the collapse of a seven-storey building which used to link the giant twin towers.

BBC: Bush calls attacks 'acts of war'

After the September 11 attacks on the World Trade Center, the CDC said it delivered tons of medical supplies within seven hours.

CNN: CDC leads battle in disease fight