An American Airlines plane carrying 60 passengers and four crew members collided with an Army Black Hawk helicopter outside Reagan National Airport near Washington, D.C. Wednesday evening. Three soldiers were onboard the helicopter and a massive search and rescue operation is now unfolding in the Potomac River.

An airspace cluttered with passenger planes and military aircraft. A history of near-crashes. And a growing shortage of air traffic controllers available to manage it all. Some experts, politicians and airport managers have been warning for years of the risks posed by the crowded airspace and volume of flights at Ronald Reagan Washington National Airport (DCA).

The staffing at the air control tower at Reagan National Airport was "not normal" when an American Airlines plane and Army helicopter collided on Wednesday night, a report shows.

Airport preferred by Washington lawmakers and lobbyists lies in some of the most congested airspace in the country.

The crash near Reagan National Airport has renewed questions about the airport's flight load, considering its small size, among other issues.

The airspace around Ronald Reagan Washington National Airport has long been problematic due to heavy military and commercial flight activity in the nation’s capital, according to industry insiders.

Investigators analyze flight data to understand the crash between an American Airlines jet and a military helicopter and exactly what was going on before disaster struck.

Lawmakers have expressed concerns about congestion in at Ronald Reagan Washington National Airport amid a constricted space.

A midair collision between an Army helicopter and an American Airlines flight from Kansas killed all 67 people aboard the two aircraft. That was the word from authorities Thursday as they scrutinized the actions of the military pilot after the country’s deadliest aviation disaster in almost a quarter century.

Black box' recorder recovered from jet which collided with helicopter killing 67 - Officials say there are no survivors among the 67 passengers on the aircrafts that collided above Washington, D.C.

The collision of a U.S. Army helicopter and an American Airlines plane over Washington D.C. has left many people stunned. Here's what experts want to know.