While authorities focus on the cause of the US's deadliest aviation disaster since 2001, families are mourning their loved ones. Here's the latest.

There were 64 passengers aboard the plane, and three Army soldiers in the helicopter, according to officials. Here's a look at what we know about the victims.

An American Airlines passenger jet collided with a military helicopter while landing at Ronald Reagan national airport near Washington DC.

A timeline of the Washington, D.C., plane crash on Jan. 29 details the moments before and after an American Airlines passenger flight and Army helicopter collided over the Potomac.

U.S. authorities said on Thursday it was not yet clear why a regional jet crashed into a U.S. Army helicopter at a Washington airport, killing 67 people in the deadliest U.S. air disaster in more than 20 years.

Army helicopter. There were 64 people on American Airlines Flight 5342 from Wichita, Kansas to DCA — including 60 passengers and four crew members. The Blackhawk Army helicopter had three soldiers on board.