Through maps, videos, photos and radio transmissions, CNN is piecing together what occurred during the deadly, midair collision.

In the three years before the deadly collision between an Army helicopter and an American Airlines flight near Reagan ...

The Army official said that the pilots were on a routine training flight along a familiar flight path that isn't particularly ...

Real-time data on coastal conditions will support improved maritime navigation in New York.Navigating New York waterways just ...

An American Airlines regional jet went down in the Potomac River near Washington, D.C.'s Ronald Reagan Washington National Airport after colliding with a U.S. Army Black Hawk helicopter on Wednesday ...

An American Airlines regional jet went down in the Potomac River near Washington, D.C.'s Ronald Reagan Washington National ...

While landing at Ronald Reagan Washington National Airport in Washington, D.C., on Wednesday shortly before 9 p.m., American ...

A airplane and military helicopter collided in Washington, D.C., before plunging into the Potomac River. Here's who was on ...

Wildfires in Southern California have prompted major discussions about water in the state. Here's an overview of where water ...

But all is not well between China and Cambodia these days. China made no new loans to Cambodia last year. It has been ...

Search efforts continue after an American Airlines plane from Wichita, with 64 people on board, collided with an Army helicopter near Washington, D.C., and crashed into the Potomac River.

An American Airlines regional passenger jet and a U.S. Army Black Hawk helicopter collided midair and crashed into the ...