Beacon

Bombardment by surrounding defenses upon expanding sentries
Instantaneous structural reconstruction from the quivering mass

Tremors as the tower rises
Enlargement of the transmission disc
Adjustment of targeting position
As energy levels rise

Rivers froth as ground cracks open
Emission of heat as energy levels rise

With a crack in the sky
A fleet of corvettes descend into the atmosphere
Accelerate towards the anomaly

Sentries reconfigure into aerial forms
Arise into orbital space
Flesh molded into claws tearing hull in two
Barrage unleashed from corvette rocket arrays

Growing light within the disc
Causing localized electronic disruption

The last of the sentries disintegrated
As the onslaught shifts to the anomaly
A signal burst radiates out
Moments before destruction