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"This is the spot," the pilot inside the mech operated the thick, long tube that was raised behind him, and then several drilling missiles fired out, burrowing deep into the ground, constantly exploding and probing the subterranean situation.
[Target locked, operation commences]
Five blue arcs quickly streaked across the ground overhead, and then these mechs began to approach the blasted underground entrance.
Underworld.
In the collapsed tunnels and ruins, there was a cacophony of alarms and footsteps, autonomous units were everywhere, extinguishing fires, and clearing passages, while many armed personnel roused by the alarms began to prepare for battle.
"What's happened?" a rough-hewn, burly man grabbed a young man who'd just run past, his disheveled hair indicating he had likely just woken up.
"We're under attack, probably by official forces!" the young man yelled, his expression frantic.