An American Airlines jet carrying 60 passengers and four crew members collided Wednesday with an Army helicopter while coming in for a landing at Ronald Reagan National Airport near Washington, D.C. Here, we look at what happened and, more broadly, at aviation safety in the U.S.

The United States' streak of more than 15 years without a major fatal airline crash came to a shocking end this week.

The midair collision of an American Eagle-branded regional jet and a Sikorsky UH-60 helicopter near Washington, DC may be the first fatal crash involving a US airline since the 2009 crash of a Colgan Air-operated regional jet that killed 50 people.

The midair collision at Reagan National Airport on Wednesday night has presented Sean Duffy with a major crisis just hours after he was sworn in as secretary of transportation.

CBS News confirmed only one air traffic control worker was managing the helicopters when the crash between a military helicopter and passenger plane occurred in Washington D.C. That is a job normally done by two people.

The National Transportation Safety Board did not specify how many air traffic controllers were working at the time of the collision.

Authorities are combing the Potomac River for a second day in search of victims and more clues behind the deadliest U.S. air crash in over 20 years.

Sixty-seven people died in a collision between a Bombardier CRJ700 regional jet operated by PSA Airlines and a military Black Hawk helicopter.

Responders are working to recover the victims of Wednesday night's midair collision over Washington, D.C. It could be the deadliest crash to occur in U.S. airspace in at least 15 years.

Video footage of the incident shows the aircraft flying at a low altitude, before an explosion happened at the moment of impact. The National Transportation Safety Board is investigating.

An American Airlines commercial flight and an Army Black Hawk chopper crashed midair on Jan. 29. Here are updates on this developing story.

Wednesday's crash involving an American Airlines flight and Black Hawk helicopter marked the first commercial crash on U.S. soil in more than 15 years.