Leaders across the D.C., Maryland, and Virginia region, as well as federal lawmakers, are reacting to the tragic American Airlines plane crash near DCA.

Mayor of the District of Columbia Muriel Bowser held a press briefing alongside several officials at 7:30 a.m. EST providing updates on the collision between an American Airlines plane and a military helicopter on Wednesday night.

A pilot's theory about the cause of the crash between an American Airlines jet and a military helicopter has quickly gone viral online.

Muriel Bowser, the mayor of Washington, D.C., declined to say if she was aware of any survivors from the crash of an American Airlines flight and military helicopter near Ronald Reagan National Airport.

Mayor of Washington, D.C. Muriel Bowser joins Ana Cabrera to share more on the recovery efforts underway after the crash between an American Airlines passenger jet and an Army helicopter.

The plane collided with a helicopter just before it was scheduled to land. This is a developing story and will be updated.

The plane collided with a helicopter just before it was scheduled to land. This is a developing story and will be updated.

A regional jet approach ing Reagan National Airport collided with a military helicopter over the Potomac River late Wednesday night, prompting a massive search and rescue operation.

Washington, D.C., Mayor Muriel Bowser spoke with CBS News' Nicole Sganga about Wednesday night's midair collision of an American Airlines plane and an Army helicopter. Crews are still working on recovery efforts in the Potomac River,

The Federal Aviation Authority has confirmed US Army Blackhawk helicopter and an American Airlines passenger plane were involved in a mid-air collision.

Washington, DC Mayor Muriel Bowser has confirmed that “both aircraft are in the water” and 64 people were flying in the American Airlines aircraft and three were aboard the military helicopter that collided mid-air.