Attack on the World Trade Center | Attack on the Pentagon
Anatomy of terrorist attacks | How the buildings most likely collapsed

Boeing 757
Flight 77, carrying 64 people
Capacity: 239
Overall length: 155 feet, 3 inches
Wingspan: 124 feet, 10 inches
Maximum speed: 402 mph
Weight: 126,250 lbs. (empty)
Fuel capacity: 9,370 gallons

Pentagon facts
Construction: Began on Aug. 11, 1941, took 16 months

Building size: 6.5 million square feet

Land area: Building and courtyard cover 34 acres

Employees: Approximately 25,000

Source: U.S. Defense Department, New York Times