Two metro trains have collided near the Fort Totten Station in Washington, D.C. As Nancy Cordes reports, at least one passenger is dead and many others were injured during the crash.(June 22, 2009)

Video of the crash site of two Washington, D.C. metro trains Monday afternoon. (June 22, 2009)

Washington, D.C. Mayor Adrian Fenty comments on the deadly crash of two Metro commuter trains. (June 22, 2009)

A rush-hour subway train plowed into the back of a stalled train in its path on Monday in the northern reaches of the U.S. capital, killing at least six people. (June 22, 2009)

One Metro transit train smashed into the rear of another at the height of the capital city's Monday evening rush hour, killing at least seven people and injuring scores of others.

Witnesses say train crash sounded like an explosion, & describe the chaos that ensued immediately after one Metro train in Washington, DC slammed into another. With at least 7 killed, local officials are calling it the deadliest accident in the system's history.

The Associated Press has new video of rescue workers going through the wreckage of Monday's deadly Metro train crash in Washington, trying to help wounded passengers.The crash killed 9 people. (June 25, 2009)

Local media report three people have been shot outside the Pentagon Metro station in Arlington, Virginia. A police agency says two officers were shot and the suspect is in custody. There are reports the Pentagon is on lockdown. (March 4)

A gunman opened fire at the subway entrance to Pentagon complex Thursday, wounding two Pentagon police officers, a spokesman said. The alleged gunman also was wounded. Authorities say none sustained with life-threatening injuries. (March 4)

Vikings Metrodome Roof Collapses

Metrodome Roof Collapse From Inside Metrodome