D.C. Water is dropping crews and a 14-ton drilling rig just north of Great Falls in Virginia to gather samples for a future sewer project.

Multiple people are dead after passenger jet collides with a military helicopter midair near Reagan National Airport.

Search efforts continue after an American Airlines plane from Wichita, with 64 people on board, collided with an Army helicopter near Washington, D.C., and crashed into the Potomac River.

Transgender pilot Jo Ellis is rumored to have been involved in the American Airlines flight and Black Hawk collision.

We are now at the point where we are switching from a rescue operation to a recovery operation,” said John Donnelly, the fire chief in the nation’s capital.

The rare circular ice slabs spun, collided and collected in large eddies because of the prolonged cold weather.

Crews working to retrieve the passengers of the American Airlines jet and the army helicopter that collided and crashed into the Potomac on Wednesday night have to contend with the dangerously cold waters of the Potomac River.

American Airlines has canceled all flights to Washington, D.C., from Norfolk International Airport. Impacted D.C. flights are being rerouted to Richmond. "Our hearts are broken for the families who must now process the grief of such a sudden and unexpected death," wrote Winsome Sears on X.

Here are 10 key things to know about the Black Hawk helicopter involved in the incident, its capabilities, and the mission it was conducting at the time of the crash.

Divers are expected to return to the Potomac River as part of the recovery and investigation after the United States’ deadliest aviation disaster in almost a quarter century.

Two planes aborted landings at Reagan National Airport in the past week due to military helicopters in their flight path, according to the Washington Post.