The unmanned aerial devices have been sighted a number of times since 20 November, over RAF Lakenheath and RAF Mildenhall, in Suffolk, RAF Feltwell in Norfolk and RAF Fairford in Gloucestershire.

The Pentagon is “actively” watching for drones over U.S. Air Force locations in the United Kingdom, following a series of unexplained sightings over the past two weeks. The sightings, which took

Since the first small unmanned aerial system was first spotted on Nov. 20, the number of drones has fluctuated and there have been a range of different sizes and configurations, said the U.S. Air Forces in Europe spokesperson.