North Korea on Monday revealed that over 150 warplanes conducted airstrike drills last week, including in a previously unreported flight on Saturday.

The ROK military reportedly knew about the Oct. 8 flights in North Korea involving 150 airplanes and scrambled F-35As to respond. But unlike when the North conducted a similar drill on Thursday, South Korea did not disclose these moves to the public because the DPRK kept the planes north of a “special reconnaissance line.”