Nearly 70 people were killed in an aircraft collision Wednesday night near Washington, D.C. Are flights being delayed or canceled?

There are likely no survivors after an American Airlines passenger jet and an Army helicopter crashed midair near Washington, D.C, Wednesday evening, officials have said.Flight 5342 from Kansas was on the final approach to Ronald Reagan National Airport when it collided with the Black Hawk helicopter before exploding a huge fireball.

Some experts, politicians and airport managers have been warning of the risks posed by the crowded airspace at Reagan Washington National Airport.