Vol 12: Chapter 8-4.
The navy officials were shocked to see the players dealing with the dragon. As people in high military positions, they knew of the existence of this dragon.
This dragon was said to bear grudges against anyone that attacked it. I wouldn't stop until its target was destroyed. The worst thing about the dragon was it was immune to gunfire and missiles. Scientists analysed videos of attacks on it and found out a translucent barrier shielded all the attacks. This came as a shock but also surprise because energy barriers weren't just theoretical anymore. That was why the government garrisoned a fleet outside the island.