The Black Hawk helicopter that crashed into an American Airlines plane was alerted to the plane’s presence by air control twice, the first time at least two minutes before the deadly crash, according ...

Here are some of the reasons why aircraft can catastrophically veer toward the ground like a medevac jet did in Philadelphia on Friday night.

The collision on Wednesday night, between an army Black Hawk helicopter and a commercial plane, left no survivors.

Recovery crews and divers are searching the Potomac River for remains and clearing wreckage from the midair collision of a passenger jet and Army helicopter that killed 67 people.