London, England (CNN) -- A cloud of ash from an Icelandic volcano stymied European air traffic and choked international travel on Saturday a...

USAF Eyes July SBSS Launch, New Space Fence : " U.S. Air Force officials say the first Space-Based Space Surveillance satellite is set ...

Watchkeeper UAV Makes First Flight in UK : " Watchkeeper, the newest unmanned aircraft to join the ranks of the British Army, performed...

FORT WORTH, Texas - The U.S. Army will soon sign an agreement with U.S. Special Operations Command to borrow one of its A160 Hummingbird UAV...

Seoul, South Korea (CNN) -- A South Korean investigator said Friday that an "external explosion" was the most likely cause of the ...