An airfield where North Korea tested new combat and spy drones over the summer has gone quiet, with no signs of large-scale production or deployment just months after the official reveal of the aircraft mimicking American models.

NK Pro analysis of Planet Labs satellite imagery shows flight testing activity at Panghyon Airbase likely stopped soon after the July 27 military parade, where a combat unmanned aerial vehicle (UAV) modeled after the U.S.-made Reaper and a larger reconnaissance drone based on the U.S. Global Hawk conducted flyovers.

The apparent halt in testing raises the