"Boom, boom, boom..." The remaining nearly 2,500 gun emplacements fired with wild abandon. Blade-Arm Mutalisks and Vipers died one after another under their assault. Even when Blade-Arm Mutalisks flew close to the emplacements and viciously launched Glaive Wurms, the Glaive Wurms merely left white marks on the emplacements' armor before ricocheting away to who knew where...
"Fire! Fire! Hit them hard!" Having failed to anticipate that the enemy possessed cloaked units capable of evading their detection equipment, Robin Becky had lost half his gun emplacements for nothing. He felt that even if he won this war, a trip to military court would still be unavoidable.
"The garrison fleet doesn't need to return immediately. The gun emplacements and fighters are enough. Patrol the surrounding area at once. Those bugs couldn't have appeared out of thin air—watch out for their hidden fleet!" As he watched the emplacements blast Zerg combat units apart one after another, Robin Becky did not forget to warn the fleet against a sneak attack from the enemy's warships.
The defeat of the Wager and Kaimelena combined fleet had led Wager's military to study the Zerg's combat style for quite some time. Although Caroline had staged the whole affair herself, convincing Wager, Kaimelena, and Barton that nearly all Zerg warships had been destroyed, they had still conducted an in-depth analysis in preparation for future battles.
As a result, they had countermeasures for the Zerg's cloaking tactics as well.
Large numbers of scout craft dispersed from the cruisers. These further-improved scout craft retained their energy-monitoring capabilities while adding an ancient detection technique: ultrasonic scanning. Each scout craft could emit ultrasonic waves at a fixed frequency and determine targets' positions based on the echoes.
There was no medium for sound to travel through in space, so ultrasonic waves were practically unusable.