A shooting at a U.S. Air Force base in New Mexico early Saturday left one airman dead and another wounded, military officials ...

A retired U.S. Army Explosive Ordnance Disposal colonel dedicated his three-decade career to eradicating explosive threats to ...

You can't see the electromagnetic spectrum, but its connections are crucial to our defense systems.

Authorities say at least two people are dead after a midair collision involving two small planes in southern Arizona.