An American Airlines plane with 64 people on board collided with an Army helicopter over Washington, D.C., and crashed into the Potomac River.

After an Army helicopter and American Airlines plane crashed into the Potomac River around Washington, D.C., a Virginia diver shared challenges of such a recovery effort.

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.