At the same time, the auspex array continuously monitored Mar Sara's global status. The Swarm's expansion proceeded entirely unimpeded, and human resistance signals had dwindled to near zero. The creep coverage reached 65%.
Valerie's scheduled report arrived through an encrypted channel as well: she had accompanied Raynor's Hyperion to the Agria system and was actively participating in the colony's evacuation. The update included brief tactical data, indicating that the Zerg invasion of Agria was still in its early stages, with a scale far smaller than that of Mar Sara.
Osiris cross-referenced the two sets of intelligence. Mar Sara represented a textbook case of large-scale Zerg occupation, whereas Agria offered a glimpse into the intermediate stage of an invasion. Together, they provided observation samples of different tactical phases.
However, for Mar Sara, the observation phase was nearing its end. The value of this planet was shifting from an "observation subject" into a "test bed."
Osiris began evaluating various protocols to counter the Swarm. Within the arsenal carried by the Eternal Seeker, there were several weapon systems engineered specifically for planetary-scale extermination. In the Warhammer universe, these weapons were deployed against worlds tainted by Chaos, overrun by xenos, or suffering from uncontrollable genetic mutation.
Now, facing a purely biological threat like the Swarm, they might offer a highly efficient solution. One weapon in particular was theoretically perfect for combating an enemy that relied so heavily on a massive biomass foundation.
"Recall the inventory status and detailed technical parameters of the virus bombs," Osiris commanded.
The relevant data immediately populated the main screen.
Weapon Type: Virus Bomb
Inventory Quantity: 6
Status: Secured within a specialized biochemical armory, preservation state stable.
Detonation Device: Awaiting activation.
Vector Virus Type: Reaper-7
Mechanism of Action: Atmospheric dissemination, targeting standard carbon-based biological circulatory systems. Via ultra-high-speed replication and decomposition, it liquefies organic matter into flammable gases and biomass sludge.
Effective Radius: Planetary-scale (contingent upon atmospheric density and global circulation patterns).
Operational Duration: 48 to 72 standard hours from initial infection to total transformation.
Subsequent Processing: Typically paired with orbital bombardment to ignite the atmosphere, completely purging the surface.
Osiris rapidly reviewed the technical schematics. The virus bomb itself did not directly generate a massive blast; its core was a genetically engineered strain of the Life-Eater virus. Once released into the atmosphere via a deployment casing, the virus would utilize global wind currents to rapidly disperse across the world.
Upon contact with organic life, the virus would replicate at an exponential rate, invading cells and quickly breaking down their internal matter into two distinct bi-products: highly flammable alkane gases and lifeless biological sludge.
Once the virus completed its "digestion" of the planet's entire biosphere, the atmosphere would be saturated with an extreme concentration of combustible gas.
At that point, a single spark—typically a lance strike or a low-yield thermonuclear detonation—would ignite the global atmosphere. This would trigger a surface-scouring firestorm lasting several days, completely eradicating all remaining traces of biomass.
Theoretically, this weapon should be devastating against the Zerg. The Swarm relied on a vast biomass infrastructure, and its individual units were highly concentrated organic constructs. Once the virus began to spread through the Zerg network, it could trigger a chain reaction, rapidly dissolving the entire Zerg presence on the planet.
But theory required empirical validation.
Mar Sara currently fulfilled all parameters for a live test: it was thoroughly occupied by the Zerg, harbored no friendly units, and contained no assets worth preserving. The high density and centralized distribution of the Zerg biomass made it an ideal environment to observe viral transmission rates and lethality profiles.
"Target selected: Mar Sara," Osiris' voice resonated through the bridge. "Initiate virus bomb testing protocols. Objective: evaluate the eradication efficiency of this weapon against Zerg biological clusters and gather live performance telemetry."
Inside the primary weapons control chamber of the Eternal Seeker, the atmosphere was solemn and hyper-focused. Six Tech-Priests stood before their respective consoles, data streams scrolling rapidly across the displays in front of them. The air was thick with the distinct scent of ozone from energy capacitors, along with a more subtle, chilling clinical presence indicative of high-risk biochemical agents.
On the central holographic projection table, a three-dimensional schematic of a virus bomb drifted in suspension. It was a long cylinder, roughly eight meters in length and one and a half meters in diameter. Its hull was forged from heavy alloy, its surface etched with the binary prayers of the Adeptus Mechanicus alongside hazard classification sigils.
The midsection of the chassis housed the viral containment vault, maintained at an ultra-low temperature approaching absolute zero to seal away trillions of microscopic Reaper-7 Life-Eater virus particles. The aft section contained the propulsion and navigation modules, while the nose was equipped with an atmospheric re-entry shield and the primary dispersal payload.
"Virus bomb, Designation VB-03, status check finalized," reported the Priest overseeing the weapon systems, his voice synthesized and entirely devoid of emotion. "Containment vault temperature: -273.15°C, stable. Viral activity suppression fields: intact. Detonation matrix power loops: nominal. Safety lock sequence: active, requiring triple authorization codes to disengage."
"Navigation and propulsion systems self-diagnostic passed," another Priest chimed in. "Pre-set drop coordinates and orbital vectors received. Re-entry shield energy reserves: 100%. Separation mechanism response test: nominal."
"Biochemical isolation barriers: operating at full capacity," a third Priest reported. "The three layers of blast doors securing the armory have been sealed. The deployment tube purge systems are primed. Upon weapon detachment from the hull, the corridor will immediately undergo high-temperature plasma sterilization."
Osiris' primary unit monitored every sequence in real-time through the data network. His logic core rapidly audited each metric, ensuring zero variance.
"Disengage the first layer of safety locks," he directed.
"First layer of safety locks disengaged. Awaiting second-tier authorization code," the weapons Priest replied.
"Authorization code: 100101111100110010111001," Osiris provided an encrypted string of binary code.
"Second layer of safety locks disengaged. Awaiting final physical key verification."
A concealed alcove slid open on the side wall of the control chamber, revealing a complex mechanical key fitted with a genetic recognition lock. This was the definitive physical safeguard for the virus bomb; it had to be personally inserted and turned by an authorized user bearing a specific genetic profile to completely weaponize the payload.
One of Osiris' mechanical tendrils extended across the room, its precise manipulator claw lifting the key. A micro-interface opened on the tendril's surface, docking with the key's genetic scanner to transmit an encrypted bio-key data package. The key emitted a low hum as its indicator light shifted from red to green.
The mechanical tendril inserted the key into the dedicated slot on the master console, turning it 120 degrees clockwise.
"Final safety locks disengaged. Virus bomb VB-03 has entered armed standby status," the weapons Priest confirmed.
Within the holographic projection, the color of the missile schematic shifted from a secure green to a dark, weaponized crimson.
"Load payload into the deployment bay," Osiris ordered.