One of the US Air Force's first official combat drones has taken to the air after only a year of building and development.

Flight tests for the E-4C Survivable Airborne Operations Control are being held in Dayton, Ohio, aerospace firm Sierra Nevada ...

In a major step toward a new era of airpower, the Department of the Air Force reached a key development milestone in its ...

Sierra Nevada’s first test flight of the Survivable Airborne Operations Center marks a major step in replacing the aging E-4B “Nightwatch” fleet ...