An Army Black Hawk helicopter collided midair with an American Airlines flight from Wichita, Kansas, at Reagan National Airport on Wednesday.

If changes aren't made, that near-miss becomes a mid-air collision,” one aviation safety expert said. “Unfortunately, that's what we had last night.”

The president also suggested, without evidence, that diversity hiring policies in air traffic control could have been a factor

An American Airlines regional passenger jet and a U.S. Army Black Hawk helicopter crashed into the frigid Potomac River after a midair collision near Reagan Washington National Airport on Wednesday night,