Actually, Carl did not even need to answer Clark's question because the ground of the entire sentry station was vibrating violently.
"This is..." Clark frowned. He could feel constant vibrations from the ground under his feet. His mind was racing, and something very bad suddenly came to his mind.
He looked outside. As expected, he saw over ten giant black shadows rushing toward the sentry station in the dim light!
"Alarm! The thunder beasts are approaching. Get ready to concentrate all your fire. Don't let them break through the fence!" Clark immediately let out a deafening roar to warn the soldiers at the sentry station.
"Thunder beasts have been spotted in the east!"
"Thunder beasts spotted in the west!"
"Thunder beasts spotted in the north!"
At the same time, the sentries in the
