Slideshow: Scenes of an Uncertain Future

In New York, signs and flags hung from the scaffolding of a Times Square construction site in a tribute to the victims of the attack on the World Trade Center.

Bill Fennelly, a volunteer firefighter from Baldwin, N.Y., pauses for a moment at the World Trade Center collapse in New York.

Firefighters and rescue workers unfurl a large American flag near the damaged area of the Pentagon during President Bush�s visit.

In Washington D.C., a satellite image indicates the extensive damage (top right) to the western side and interior rings of the multi-ringed Pentagon building.

President Bush meets with military rescue workers during a visit to the Pentagon Wednesday.

Rescuers and firefighters (lower left) are dwarfed by rubble at the World Trade Center as rescue operations continue around the clock. New York Mayor Rudolph Giuliani said that 4,763 people are missing or dead in the attack.

A satellite image of Manhattan reveals the still-rising dust and smoke among New York�s skyscrapers where the 1,350-foot towers of the World Trade Center once stood.