VANCOUVER - The RCMP in British Columbia says it has begun using a Black Hawk helicopter to patrol the United States border ...

A US Army helicopter collided with an American Airlines jet near Ronald Reagan National Airport, marking the deadliest ...

The Army Black Hawk helicopter involved in the fatal midair collision in Washington, D.C., had a tracking system turned off, ...

Army Black Hawk helicopter that collided with an American Eagle flight over the Potomac River​ late last month was flying with a safety system turned off, Sen. Ted Cruz told reporters after a briefing ...

A key safety system was turned off on the US Army helicopter that collided with an American Airlines regional jet last week ...

Plus: Authorities say the Black Hawk that collided with a passenger jet may have been flying higher than the max altitude for ...

New footage captures moment American Airlines plane and army Black Hawk helicopter crash in Washington DC - ...

Investigators are seeking clues into this week's deadly midair collision this week, the deadliest aviation disaster in the U.S. almost a quarter century.

It raises fresh questions as to why the two aircraft collided nearly head-on with each other killing all onboard.

This data point is one of several key mysteries investigators are exploring as they seek to explain what caused the nation's ...