During a press conference on Thursday morning, Transportation Secretary Sean Duffy said the crash was "absolutely" preventable.

Sean Duffy, the new transportation secretary, was facing his first major crisis just hours after being sworn in for the job.

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.

In a briefing that recalled his most extreme first term remarks, President Trump said without any evidence that diversity initiatives caused the midair collision.

The Trump administration's new Transportation Secretary, Sean Duffy, has acknowledged the collision of a Black Hawk helicopter and an American Airlines domestic flight mid-air, calling the accident "absolutely" preventable.

A timeline of the tragic collision between a commercial plane and a Black Hawk helicopter over the Potomac River, with insights into the ongoing investigation.

Runway operations at the airport are expected to resume at 11 a.m. "The NTSB will lead the investigation. We are working with local officials and will provide any additional information once it becomes available," McLendon said. A source briefed on the search-and-rescue operation described a gruesome scene with large numbers of bodies recovered.

Sean Duffy’s first big test as secretary of the Department of Transportation came just one day after he was sworn into office. A commercial jet carrying 64 people collided in midair with an Army helicopter carrying three servicemembers Wednesday night near Washington,

An American Airlines plane and a U.S. Army helicopter collided near Reagan National Airport and crashed into the Potomac River, according to officials.

The Federal Aviation Administration is restricting helicopter traffic over the Potomac River stretching from Memorial Bridge to the Woodrow Wilson Bridge between the District of Columbia

A passenger jet hit an Army helicopter with three soldiers as the plane got ready to land at Reagan National near Washington, D.C. The two aircraft went into the Potomac