• World Trade Center and Pentagon selections are for those on the ground.

The victims are divided into these groups:

1. CONFIRMED DEAD. Includes those who have been confirmed dead by a coroner's office or the Defense Department. It also includes those for whom death certificates have been issued, even if no body has been recovered.

2. REPORTED DEAD. Includes those whose deaths have been reported by family, employers, mortuaries, places of worship or by the airlines that listed them as aboard one of the four flights. Includes people for whom memorial services have been held, even if their bodies have not been recovered or positively identified. (Those identified by federal authorities as the hijackers are not included in the database.)

3. REPORTED MISSING. People identified by family, official agencies or employers as missing.