New details are emerging about drones that flew over U.S. military bases last year, though there is still no explanation for where they came from. Gordon Lubold, a White House and national security reporter at The Wall Street Journal,

Commanders on a military base swarmed by mystery drones had the authority to shoot them down, but didn’t, the Pentagon has revealed.

Unidentified drones spotted flying over Langley Air Force Base in Virginia have baffled US military officials who are not sure whether it is the work of hostile powers or hobbyists.

The military and the Pentagon’s UFO investigating arm have tried to determine the source of the drones that flew over Langley Air Force Base.

Dozens of mysterious drones have attempted to spy on sensitive U.S. military bases, and there is little the Pentagon can do to stop them.

U.S. officials don’t know who is behind the drones that have flown unhindered over sensitive national-security sites—or how to stop them.

Drone Wars US military officials were disconcerted by a strange parade of unidentifiable drones flying over an Air Force base — and nobody, including the president, knew what to do about them. As the Wall Street Journal reports,

Fox News chief national security correspondent Jennifer Griffin has the latest on the Pentagon's investigation into the unidentified drones on 'Special Report.'

The Pentagon has confirmed a number of “unauthorized” drone flights last year in restricted airspace over a Virginia base that houses the nation’s most advanced fighter jets. The Wall Street Journal first reported that for 17 days in December,