Officials say no survivors after a passenger jet crashed with an Army helicopter on approach to a Washington, D.C., airport. Here's what we know.

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. The collision between an American Airlines passenger jet and an Army helicopter at Ronald Reagan Washington National Airport near Washington,

The National Transportation Safety Board typically releases a preliminary report within a few weeks of an accident.