The piercing alarm sounded at this moment throughout the underground complex.
Countless footsteps started to approach from outside, one after another.
Beneath the dim emergency lights, squad after squad of silent soldiers ran over, guns raised and aimed in this direction, encircling the giant hole that Mu Fan had broken open.
Snapping sounds of magnetostorms came from the muzzles, with blue electric sparks flaring intermittently.
Military standard arc guns, with an effective lethal radius of less than 10 meters, the powerful current was enough to stun a person.
Fully armed soldiers, wearing special tactical helmets, at this moment, no one could see their eyes.
But that did not stop the terrifying impact of the destroyed entrance before them!
Someone dared to use explosive weapons within the Special Service Department's base.
