A regional jet collided with an Army Black Hawk helicopter near Ronald Reagan Washington National Airport on Wednesday evening, U.S. officials confirmed to ABC News.
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.
Radar images of the army helicopter and passenger plane that crashed over DC have revealed that air system warned of a "collision alert" moments before the crash.
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