A new construction project is underway at a North Korean airbase that was used to test new military drones last year, according to NK Pro analysis of satellite imagery, possibly signaling plans to ramp up flight testing or even begin operations. 

North Korea revealed its new Saetbyol-9 (SB-9) combat drone and Saetbyol-4 (SB-4) reconnaissance drone, modeled after the U.S. MQ-9 Reaper and U.S. RQ-4 Global Hawk respectively, in July last year, but it has not offered updates on their development recently.

The latest construction started at Panghyon Airbase in North Phyongan Province in