Sixty-four people aboard a commercial airliner died Wednesday night after it collided with a military helicopter midair near Reagan Washington National Airport. Both the American Eagle jet and Army Black Hawk are in the Potomac River.

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.

Aviation experts have warned about the risk of a passenger aircraft collision for years.They cite air traffic controller shortages and airspace congestion as safety risks.Wednesday's crash is the first complete-loss US airline accident since 2009.