There are many questions and speculation on what went wrong as officials continue to investigate the cause of the deadly ...

"Even though we have a lot of safety layers in there, if all the dominos line up the wrong way, we can have, on rare ...

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.

American Eagle Flight 5342 collided with a Black Hawk helicopter over the Potomac River in some of the country's most restricted airspace.