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 place over three U.S. air bases last week between Nov. 20 and 22 and again on Monday night, have prompted the deployment of roughly 60 British troops, including counter-drone specialists, to help defend the locations, according to Sky News.

While installation leaders have determined the drones so far have not impacted the bases, personnel or military assets held there, Pentagon press secretary Maj. Gen. Pat Ryder told reporters Tuesday that officials take the sightings very seriously.

“They are being actively monitored,” he said of the unmanned aerial vehicles (UAVs). “It’s something that we're........

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