The RQ-170 Sentinel drone lost over Iran is one of America's most valuable intelligence assets. It's unclear what brought it down - hostile fire or malfunction. Iran claims to have shot it down but has provided no photographs.
UC Davis chancellor says she did not order campus police to use pepper spray. Chancellor Linda Katehi told 1,000 students that police were directed not to use force.
SEAL Team Six: Hiding in a military city in Pakistan, Osama bin Laden was found through a combination of high-tech surveillance and old-fashioned detective work.
Military analysts say three trends involving technology, workplace culture, and the nature of modern warfare explain how WikiLeaks could have gotten so many classified Pentagon documents.
The X-37B, A U.S. Air Force space raises concerns about weapons in space. While its exact purpose remains unclear, it joins a host of new space technology that could usher in a new era of space warfare.
The Times Square bomb failed to go off because it was badly constructed and poorly designed. But other bombs made of easy-to-obtain ingredients have caused mayhem, which analysts say was the intent in New York City, too.
The Air Force is to launch the first test flight of the X-37 pilotless space plane Wednesday. It's meant to stay aloft for months, but its mission is secret, leading some to worry about its purpose.