$1.1 billion
Cost of the World Trade Center buildings

$1,197
Nonstop one-way fare for a Boston-Los Angeles flight on American Airlines

$4
Cost of a box cutter

116,000
American flags sold by Wal-Mart on Sept. 11

6,400
Flags sold by Wal-Mart on that date last year

$40 billion
Value of the emergency antiterrorism package approved by the U.S. Congress on Sept. 14

$11.1 billion
Amount of federal aid approved after Hurricane Andrew struck in 1992, until now the most expensive disaster in U.S. history

30,000
Body bags set aside for New York City after the World Trade Center terrorist attacks

20,000
DNA tests the New York City medical examiner is willing to conduct to identify victims

2,527
People killed in international terrorist acts from 1990 to 1999

5,515
People reported missing or dead in New York City and Washington after the Sept. 11 attacks

6,598
American officers who died in the Vietnam War

11,550
Uniformed New York City fire fighters

350
Fire fighters missing or dead since the Sept. 11 attack

27
Fire fighters who died in 1947 battling ship fires in Texas City, Texas‹previously the most in any single disaster

$29,973
Starting salary of an N.Y.C. fire fighter

1918
The last time Major League Baseball play was suspended for more than three days, during World War I

1929
The last time the New York Stock Exchange was shut down for more than three days, after the Crash

$3.2 billion
Amount a developer paid in July to lease the World Trade Center office and retail space

99
Years left on that lease

0
Number of times in the past that Broadway theaters have voluntarily gone dark

0
Number of times the FAA has shut down all U.S. airports

0
Number of times the NFL has postponed all games

9/11/1922
Beginning of the British mandate in Palestine and the eventual creation of the Israeli state

9/11/1840
British bombing of Beirut in support of Turkey

$30 million
Pledged by the Lilly Endowment to help the relief efforts

$1,000
Donated by the Guste public-housing development in New Orleans

2 hr. 40 min.
Time it took for the Titanic to sink after hitting an iceberg

1 hr. 44 min.
Time between the first attack and the collapse of both World Trade Center towers

Sources: Divided We Stand (Basic Books, 2000), www.aa.com, Home Depot, AP, Agence France Presse, N.Y. Times, Washington Post, Office of the Mayor, NYT, CIA, TIME, Combat Area Casualties File, NYT (3), FDNY, AP (2), NYT (2), CNN (3), AP (4), Encyclopedia Titanica, TIME