Chapter 378: The Gap Between Life and Death

​The baseline human world record for static underwater breath-holding is over twenty minutes.

However, holding your breath while engaged in strenuous physical exertion rapidly burns through the body’s oxygen reserves, capping maximum survival time at two to three minutes. Combined with the small pocket of air trapped in his inverted helmet, Jason estimated he had five minutes at absolute maximum before hypoxia set in.

​A silent five-minute countdown began in his mind... He had to move fast!

​Crossing the threshold, he found himself in a nanobot disaster zone. In the brief time it had taken him to enter, the vibrant green markers had multiplied dramatically. What had been scattered, pea-sized dots were now dense, carpet-like patches of seaweed covering the facility’s floor, and the patches were rapidly expanding.

​It was highly probable that the refined metallic alloys of the laboratory floor were providing the nanobots with abundant raw materials, fueling an exponential replication curve.

​Jason felt a cold chill run down his spine. If Elara hadn’t actively marked these microscopic death traps, navigating this room would be physically impossible. He would have had to abort the mission immediately. Without her, he might have been disintegrated the moment he stepped through the door!

​Now, his only option was to trust her unconditionally. He had to assume that every safe path she left unmarked was truly safe.

​Steeling his resolve, Jason swam forward, maneuvering sideways with agonizing care. Stripping off the bulky power armor did offer one significant advantage:

He could physically feel the subtle shifts in the water currents against his bodysuit, granting him vastly superior agility and spatial awareness.

​However, the strenuous effort of navigating the currents was rapidly burning through his trapped air supply. He exhaled slowly, watching the precious bubbles escape.

​Carefully skirting the expanding green patches at the entrance, Jason reached a section of solid metal flooring. He quickly unslung his compact magnetic rail-pistol, aimed it at a nearby sealed server terminal, and pulled the trigger.

​With a muted, concussive thud that reverberated through the water, the hyper-velocity slug shattered the alien casing to pieces.

​Destruction is always easier than creation. Even advanced, high-precision extraterrestrial hardware couldn’t withstand the brute kinetic force of a railgun round.

​The weapon’s intense recoil jolted Jason backward, sending him drifting dangerously close to a rapidly expanding cluster of marked nanobots.

​Cold sweat instantly drenched his back. He frantically contorted his body, barely stabilizing himself. A single brush against that green patch meant instant, molecular disintegration!

​His hammering heart was burning through his oxygen at an alarming rate, and despite the freezing seawater, he was sweating profusely. Unable to control his autonomic stress response, he knew his only option was to speed up.

​This is suicidal...

​Weaponized nanorobotics were terrifyingly indiscriminate.

​The moment they came into contact with human tissue, they would violently extract essential metallic trace elements to fuel their own replication cycle. While flesh seems soft, calcium, sodium, potassium, magnesium, and iron are fundamental components of human cellular structure. Instantly stripping any one of those elements from the body causes immediate, catastrophic cellular collapse.

​If a civilization wanted to sterilize a planet, a self-replicating nanobots swarm was vastly more efficient and definitive than a nuclear arsenal. It left absolutely nothing alive.

​In classic Earth sci-fi literature, this apocalyptic scenario was known as the "Gray Goo." Jason never imagined he would witness it firsthand... He wondered if these specific units possessed a replication cap, or if they truly could multiply infinitely.

​Cursing his luck, Jason took a deep breath, inhaling the last significant pocket of air from his helmet.

​Three minutes left...

​Moving methodically, he used his tactical laser cutter to slice through the shattered internal components of the terminal. Without taking the time to identify their exact function, he haphazardly ripped out several intact crystalline data chips and shoved them directly into his helmet for safekeeping.

​Sweeping his helmet-mounted searchlight across the room, the beam caught the outline of a massive cargo elevator.

​That meant this facility wasn’t just a surface outpost—it had a subterranean sublevel!

​However, a quick scan revealed no secondary access hatches or maintenance shafts... and the elevator’s indicator lights were dead. It was completely unpowered.

​The laboratory itself lacked any active internal defense turrets. It was highly likely the nanobots swarm had chewed through the facility’s power conduits when it breached the room.

​Glancing over his shoulder, Jason saw the green markers spreading at a visibly terrifying speed! In just a few minutes, they had claimed nearly sixty percent of the floor space. Lethal clusters were everywhere.

​Jason gritted his teeth, exhaling a stream of murky bubbles. The suffocating silence of the deep felt like a massive, invisible hand slowly closing around his throat.

​The underwater environment made every movement a grueling chore. The space was pitch black and claustrophobic, illuminated only by the narrow beam of his helmet light and the distant glow of the drones outside...

​The creeping claustrophobia, the mounting hypoxia, and the sheer terror of invisible death battered against his psychological defenses. His vision swam, and his lungs burned with the primal, instinctual urge to inhale, a glaring physical symptom of immense psychological and physiological stress.

​Move faster.

Two minutes...

​Suddenly, a muffled, concussive crack echoed from outside.

​It was the ruptured oxygen tank on his discarded power armor finally giving way under the pressure.

​Jason’s eyes widened in horror. He instantly realized the catastrophic implication: the localized shockwave of that explosion would scatter the nanobots clinging to the armor in every direction.

​He couldn’t afford to panic. Forcing his heart rate down, he turned and swam rapidly toward a device that resembled a compact, meter-tall radar dish.

​His instincts screamed that this piece of hardware was critical.

​He fired several railgun rounds into the reinforced base of the dish, then quickly sliced through the remaining structural supports with his laser cutter. Gripping the severed dish, he heaved upward, and his eyes widened in shock.

​It’s incredibly heavy!

​One minute left!

​Even with the buoyancy of the water, the alien alloy was dense. If he held onto this, swimming back to the exit would be physically impossible! What should he do?

​As anxiety threatened to overwhelm him, Marcus’s panicked voice suddenly buzzed through the water, the acoustic vibrations transmitting from the squad’s external speakers outside.

​"Commander! Get out! Get out now!"

​"Green! The breach is covered in green!"

​"Abort! They’re swarming the exit... you’re about to be sealed in!"

​The shouted warnings traveled poorly through the water, arriving as distorted, buzzing echoes, but the urgency was unmistakable. Jason instantly grasped the situation: the nanobots cluster at the breach was expanding so fast it was about to seal the only way out!

​In a fraction of a second, Jason made his choice. Summoning every ounce of his enhanced strength, he hoisted the massive alien dish. Under the crushing weight, he felt his muscles strain to their tearing point. It had to weigh over a hundred kilograms!

​...I can’t swim with this!

​The massive exertion spiked his oxygen consumption to critical levels. Dark spots rapidly blossomed in the corners of his vision—the onset of severe hypoxia.

​If he didn’t drop the dish, he would never make it to the breach!

​"Commander, hurry! Drop it!"

​"...Move!"

​In the face of imminent death, a massive surge of adrenaline flooded Jason’s system. He forced his darkening mind into sharp focus, confronting the brutal tactical decision...

​Option one: Abandon the heavy radar dish and swim for his life, securing the data chips already stashed in his helmet!

​Option two: Search desperately for a manual override to the subterranean sublevel, praying he could find an unflooded airlock... But the elevator was dead, and the floor was likely swarming with nanobots.

​The veins in his forehead throbbed violently. His face was a sickly, either from hypoxia or sheer, suppressed rage.

​As the edges of his vision collapsed into blackness, Jason bit down viciously on his own tongue. The sharp pain and the metallic taste of blood flooded his mouth, shocking his fading consciousness back to reality.

​Do not pass out! If you pass out, you die!

​Just as he was about to reluctantly drop the alien hardware and swim for his life, he suddenly felt a massive, invisible force grip him. It felt as though a giant hand had wrapped around his entire body, violently yanking him toward the exit.

​Operating on pure willpower and edge-of-death focus, the sudden, violent jerk caught him completely off guard. His muscles spasmed, and he inadvertently swallowed a massive gulp of seawater. The saltwater flooded his bronchi, triggering a violent, involuntary coughing fit that expelled his final reserves of air in a chaotic burst of bubbles.

​A Hostile contact! His combat instincts flared, and he desperately tried to aim his rail-pistol behind him, but his movements were sluggish and powerless against the crushing grip.

​But through the haze of drowning, a sudden realization pierced his fading mind. It wasn’t an enemy. It was Elara. She had gathered her strength and was physically pulling him out of the facility...

​Faster! Faster!

​"...The breach is sealed!"

​"Blast it! Don’t let him die in there!"

​The algae markers at the exit had grown completely out of control, forming a solid, glowing wall. Elara’s markers were about to fully plug the breach.

​Suddenly, a massive, directed surge of water slammed into the blockage, violently tearing the marked algae away. The instant Elara’s cells collided with the nanobots, they were aggressively consumed and disintegrated.

​But that momentary physical sacrifice created a gap just wide enough. Seizing the millisecond window, Jason slipped through the breach like a torpedo, launching out into the open ocean.

​The next instant, several armored hands seized him in a grip.

​"We got him! It’s the Commander!"

​Marcus was overjoyed. When he had watched the power armor eject Jason earlier, he realized immediately what had happened. He instinctively reached to detach his own emergency oxygen line to share it, but froze when he saw Jason’s chest convulsing. The Commander’s lungs were already flooded with water; an air line would do nothing now.

​Marcus frantically waved his arm. "Fall back! Everyone, fall back immediately!"

​"Prime the high-yield tactical nukes! Spool the EMP warheads..."

​In his final moments of consciousness, Jason was completely spent. His vision was a solid wall of blackness, his brain starved of oxygen. The last things he registered were the blurred silhouettes of his tactical squad and... a swirling, protective sphere of vibrant green.

​His consciousness finally slipped away, plunging him into total darkness.

​But his hands remained locked around the alien hardware.