Sent_en: 2zh The authors also concluded that military air activity was heavy at the time, but that the radar records show no overt action toward the unknown object.
Sent_yy: 两位作者还得出结论说，虽然当时空中的军事活动很频繁，但是雷达记录中并没有显示出针对这个不明物体采取了任何公开行动。