Vierziger’s right hand was on the 2-cm weapon’s pistol grip, holding it like a massive handgun. He fired point-blank into the edge of the manhole cover. Sub-machine gun bolts made the steel disk stutter. The heavier charge flipped it like a tiddlywink. Vierziger tossed the grenade into the opening, put his back against the alley wall, and fired another bolt down the hole to disconcert anybody who might have the notion of throwing the grenade back up.
The lid hit the pavement a meter from the hole, spinning on edge with a nervous clang-g-g-g until the grenade went off beneath. It was a bunker buster. It atomized a mist of fuel through the air ten cubic meters of tunnel, then detonated the mixture in a blast that ruptured the pavement all the way to the mouth of the alley. Vierziger, poised with his knees flexed, rode out the ripple of concrete, but the unexpected jolt knocked Malaveda down.
Vierziger jumped into the pillar of gray smoke gushing from the manhole. “Follow me!” he shouted as be disappeared underground.
Malaveda followed. It didn’t occur to him not to.
There was a ladder. Malaveda climbed down it, facing outward; clumsy because of the sub-machine gun in his right hand and the bandolier of 2-cm ammo swinging from his left. The helmet slapped filters over Malaveda’s nose as he stepped into the noxious efflux from the grenade explosion. Four rungs down, he switched his visor to thermal imaging.
In thermal mode, the helmet converted temperature gradients to shapes. Malaveda hopped forward to keep from stepping on the pair of bodies scrunched at the base of the ladder. Another corpse lay on its back a few meters down the tunnel.
Vierziger moved ahead of Malaveda. The atmosphere swirled with blast residues which showed as pastels on the helmet visor.
The tunnel was purpose-built as an escape route, not a converted sewer main. It was round with a two-meter cross-section. The walls were monocrystal filament wound on a resin core. The matrix shattered when the fuel-air explosion flexed it beyond its resilient capacity. Swathes of monocrystal hung down like ancient cobwebs, but the structure hadn’t collapsed as yet.
Vierziger fired his heavy shoulder weapon. Shock waves down the tunnel made Malaveda stagger, even though he was behind the shooter. Hot vortices spun off to both sides of the ionized track, expanding until they filled the cylindrical space.
The tunnel dead-ended at the ladder up into the alley. The lid on the alley end had locking dogs to avoid the risk of discovery by a utility crew. Either would-be escapees had undogged the lid, or the heavy jolt of plasma had flexed the disk enough to spring the bolts.
Vierziger broke into a run. The 2-cm weapon was butted against his shoulder. He fired twice more. Each jet of plasma heated the air like a mulling iron thrust into a beaker of wine.
“Feed me!” he screamed, still running, thrusting the shoulder weapon out behind him. Malaveda grabbed the gun by the forestock, too close to the glowing iridium muzzle, but he didn’t drop it.
He slapped the receiver of the sub-machine gun into Vierziger’s hand. Vierziger holstered the pistol that was pointing again as if by magic and presented the automatic weapon. He hadn’t slowed.
Malaveda stumped along behind the killer. Sweat broke out all over his body. The filters kept his lungs free of ozone and the poisons streaming from empty cases which spun from the powergun’s ejection port. His eyes burned and patches of bare skin prickled.
A corpse sprawled as a mass of indigo and purple in the midst of the tunnel’s cool gray. The man had been partly dismembered by a bolt that struck at collarbone level. His right arm, tangled with a gun sling, hung by a few fleshless tendons; the spine was all that connected the head and torso.
Steep concrete steps led up from the other end of the tunnel. There was a handrail. Two bodies were tangled in it as they sprawled down the steps.
The armored door at the upper landing was open into the tunnel. Light flooded the passage. The panel started to swing shut. Vierziger triggered a burst at the doorway, perhaps hoping to ricochet a bolt into whoever was operating the powered mechanism.
Malaveda stopped and switched his visor to straight optics. He braced himself against the wall to aim the reloaded shoulder weapon past his partner. He was panting, drawing gasps of poisoned air through his mouth. Ozone burned the back of his throat.
He fired. Vierziger hunched at the base of the stairs, the submachine gun’s muzzle questing back for the unexpected shooter. The door’s upper hinge blew away in a cyan flash. The plating glowed white/yellow/red in circles concentric with the point of impact.
Malaveda ignored his partner’s gun. The door sagged, kinking the lower hinge and freezing the panel half-open. Tears blurred Malaveda’s eyes, and the sight picture danced wildly. He fired anyway and hit the lower hinge squarely. The door toppled onto the concrete landing like a dropped safe.