[Driller has been out and about, learning the landscape from beneath it. Its instincts combined with how it's been raised tell it that it's something it needs to learn as quickly as possible, so when Shockwave does not wish for its presence, and it is not resting beneath its master, it is out exploring.

That is until it gets a distress ping.

It takes almost no time at all for the creature to reach the location and burst out of the ground hissing. Distress call meant fight! It meant kill! It meant cover! It-- there was no fight.

...

It looks around slowly, finally spying Barricade and someone else. This was no distress. Ruffling its plating it lets out another hiss, this time directed at Barricade. Distress calls are not to be played with.]