There were no survivors after an American Airlines regional jet with 64 people aboard collided with a Black Hawk military helicopter moments before the airplane was set to land at Washington, D.C.'s Ronald Reagan Washington National Airport on Wednesday night, officials said. The accident was the worst air disaster in the U.S. since 2001.

Everyone aboard an American Airlines jet carrying 60 passengers and four crew members that collided with an Army helicopter was feared dead in what was likely to be the worst U.S. aviation disaster in almost a quarter century,