Scientists investigate the 1996 TWA Flight 800 crash.

Insurgents ambush and kill four American private contractors in Fallujah, Iraq; subsequently, the U.S. military carries out operations to recapture the city.

The planning and execution of the bombing of the Alfred P. Murrah Federal Building in Oklahoma City on April 19, 1995.

The 1989 Exxon Valdez oil spill affects the Alaskan environment and economy.

The Final Report looks back at the notorious 1971 revolt in New York States Attica Prison, where 1,200 inmates took 39 hostages during a four-day standoff.

The search for the killer of at least 48 prostitutes and runaways in the Green River area of Seattle.

The 1997 mass suicide of 39 members of the Heaven's Gate cult was the largest ever committed on U.S. soil.

The events surrounding one of the biggest mob crackdowns ever.