He indicated 27 bodies had been recovered from the airplane, and one from the helicopter.

This data point is one of several key mysteries investigators are exploring as they seek to explain what caused the nation's worst air disaster in more than a decade, aviation experts said.

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

Sixty passengers and four crew members from the plane and three Black Hawk helicopter personnel are feared dead as a recovery ...

An Army Black Hawk helicopter collided with a regional jet near Ronald Reagan Washington National Airport on Wednesday evening, U.S. officials confirmed to ABC News.

An Army Black Hawk helicopter collided midair with an American Airlines flight from Wichita, Kansas, at Reagan National ...

The plane, which took off from Wichita, Kan., with 64 people on board, was landing at Reagan National – traveling north ...

The catastrophe immediately raised questions about the close proximity in which helicopters and jetliners soar over the busy ...

A regional jet carrying 64 people collided with an Army Black Hawk helicopter. Reagan National Airport grounded all flights.

Latest news and live updates after an American Airline jet collided with a Black Hawk helicopter over the Potomac River.

Video recorded by bystanders shows the harrowing moment when the 2 aircraft crashed into one another, causing an explosion over the nation's capital.

Transmissions show early instruction for an Army helicopter to avoid the passenger jet.