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.

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

An aviation attorney told Fox News Digital he expects the families of the victims of Wednesday's midair collision will file lawsuits in the coming days.

An American Airlines regional jet collided with a military helicopter as it was approaching Reagan National Airport.

American Airlines plane crash involving the US Army helicopter has been the deadliest U.S. air crash in 24 years.

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

An American Airlines commercial flight and an Army Black Hawk chopper crashed midair on Jan. 29. Here are updates on this developing story.

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

"Our whole air traffic control system has been blinking red, screaming at us that we've got it overloaded," one expert told BI.

The crash is the deadliest in the country since 2009. On Feb. 12 of that year, Colgan Air Flight 3407 crashed shortly before its scheduled landing at the Buffalo Niagara International Airport. 49 passengers and a person inside the home the plane landed on were killed.