While landing at Ronald Reagan Washington National Airport in Washington, D.C., on Wednesday shortly before 9 p.m., American Airlines Flight 5342 collided with an Army Black Hawk helicopter and crashed into the icy Potomac River.

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

The last major collision of a commercial U.S. airline dates back to 2009, when a Colgan Air incident left 50 dead near Buffalo, New York. Federal regulators tightened safety requirements following the crash, including bolstering aircraft carrier inspection requirements and pilot training hours.

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The U.S. skating community was in mourning on Thursday after learning several skaters were on an American Airlines regional passenger plane that crashed near Reagan Washington National Airport. The plane,

The U.S. Coastguard has shared heartbreaking images of the American Airlines plane in pieces in the Potomac River following a midair collision.

A news team from NBC Washington believes it has identified the site in the Potomac River where part of the wreckage of an American Airlines plane came to rest after colliding with an Army helicopter.

By Trevor Hunnicutt, David Shepardson and Jeff Mason WASHINGTON (Reuters) -Scores of people are feared dead after an American Airlines regional passenger jet and a U.S. Army Black Hawk helicopter collided and crashed into the frigid Potomac River near Reagan Washington National Airport on Wednesday night,