Who was on the plane that crashed outside D.C.? How many people died in the plane crash? Here's what we know after the plane and helicopter collision.

At least 55 victims have been positively identified from Wednesday night's midair collision between an American Airlines jet and a military Black Hawk helicopter, Fire Chief John Donnelly of the Washington, D.C., Fire Department said Sunday afternoon.

Additional remains have been recovered from the icy Potomac River as recovery efforts continue following the deadly crash involving an American Airlines passenger plane and an Army helicopter Wednesday night.

The Army Corps of Engineers is expected to begin removing wreckage following the deadly collision of an Army helicopter and a passenger plane.

Family members of the victims of the plane crash in Washington, D.C., visited the crash site on Sunday morning. Dozens of the victims' loved ones could be seen gathered by the Potomac River to commemorate the 67 people killed in the deadly midair collision last week.

Crews lift first wreckage from DC plane crash out of the Potomac River as recovery efforts continue. More aircraft parts will be removed to aid the search for victims

The Army Corps of Engineers recovered part of the plane wreckage from the Potomac River on Monday (February 3), after last week's midair collision between the American Airlines passenger jet and U.S.

Wreckage from the midair collision near Reagan National Airport is being removed Monday from the Potomac River as officials still look for 12 victims.

Family members of victims onboard the passenger jet and Black Hawk military helicopter that collided and crashed into the Potomac River held a memorial on the tarmac at Reagan International Airport. NBC News' Aaron Gilchrist reports on the memorial near the riverbank and the latest in the NTSB investigation.