The air-raid alarm rang out just as the enemy planes entered into view.
Yes, they were flying in at ultra-low altitude!
Although the enemy planes were already detected by the radar on the "Flame Sea" when they were about 20 kilometers out, that distance was far too close.
Even more dire, the radar operator on the "Flame Sea" did not make an accurate judgment in time.
The enemy planes were entering from the north, where dozens of both sides' fighters also were, some of which were within radar detection range.
After a delay of about two minutes, the "Flame Sea's" radar operator finally determined these were enemy planes breaking through at ultra-low altitude.
Only, these enemy planes weren't headed for the "Peijing"; instead, they flew straight toward the "Longjiang".
