Use A to zoom in, Z to zoom out click and drag to pan.
You need Java to view this zoom view.
If you are experiencing problems, use the default image.

"GIS is an invaluable tool..."
This map shows the area before and after September 11, in close detail.

Transcript: GIS is an invaluable tool ... for the emergency response operations used extensively after the attack on the World Trade Center, September 11, 2001.