Questions had been raised about how the collision - which killed all 67 people involved - occurred, given pilots follow strict protocol about the altitudes they can safely reach.

The USAF increased the funding for the development of advanced engines earmarked for sixth-generation fighters, with new contracts awarded to both General ...

Two former firefighters who heroically responded to the 9/11 terror attacks in New York City have died due to illnesses related to that fateful day, according to the Uniformed Firefighters Association ...