More than two weeks after a helicopter and airplane collision over Washington killed 67 people, investigators have completed their work at the scene where both aircraft fell into the Potomac River in ...

The portion of the transmission that stated 'pass behind', may not have been received by the Black Hawk crew,” NTSB Chair Jennifer Homendy said.

Officials with the National Transportation Safety Board are expected to give an update on their investigation into the D.C. plane crash last month.

Civil War surgeons learned fast. Here are a few of the MacGyver-like medical solutions that have had a lasting impact.

Increasingly alarmed that U.S. security priorities lie elsewhere, a group of European countries has been working on a plan to ...