Diving crews are still searching the icy waters of the Potomac River looking to retrieve the bodies of all the people killed in this week’s plane and helicopter collision. Retired Black Hawk instructor pilot Martin Gottholm discusses the difficulties in flying at night for Black Hawk pilots and questions surrounding the altitudes of the aircrafts at the time.

As investigators try to uncover what happened when an airplane and a helicopter collided over the Potomac River, here is the latest information.

The Army’s Black Hawk helicopter was performing “doomsday” training when it collided with an American Airlines jet above Washington, D.C. on Wednesday, according to a new report. The helicopter was flying a route that’s part of a military plan to evacuate senior government officials to safety if the U.

No one survived the Wednesday night collision. The remains of 41 people had been pulled from the river as of Friday afternoon, including 28 that had been positively identified, Washington, D.C., Fire Chief John Donnelly Sr.

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