Four members of a Prince George's County-based labor union were onboard a plane that collided with an Army helicopter Wednesday in Washington D.C., and are now presumed dead, union leaders said in a social media post.

The archbishops of Washington and Baltimore offered prayers on Thursday after a deadly plane crash near downtown Washington, D.C.

Are plane crashes becoming more common? Washington DC mid-air collision questions answered - Lessons will be learnt from this tragedy and will contribute to future air safety

Flight data showed the plane coming from New Orleans looping around Reagan before heading to Baltimore moments after the collision. To jet was rerouted to Baltimore before 8:10 p.m. and landed at about 8:15 p.m., according to FlightAware .

Authorities were searching for survivors after a plane with 64 people aboard crashed into an Army helicopter near Reagan Washington National Airport.

Below are the names of the victims that we know so far. Click on each square to learn more about those killed. This article will be updated as new information becomes available. Viewing in the app? Click here to learn more about those who were onboard.

By Trevor Hunnicutt, David Shepardson and Jeff Mason WASHINGTON (Reuters) -Scores of people were feared dead after an American Airlines regional passenger jet with 64 people on board and a U.S. Army Black Hawk helicopter collided and crashed into the frigid Potomac River near Reagan Washington National Airport.

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A former Army helicopter pilot and Connecticut native offered his perspectives on the unique challenges faced by military aviators following a deadly crash involving an American Airlines flight and Army Black Hawk helicopter near Washington,