The explosions started at 6:14 PM, while Cael was restocking supply cabinets on the tower's fifteenth floor.
The first one hit the upper levels—somewhere in the forties, based on the direction of the shockwave that rippled down through the building's structure like a hammer strike on a tuning fork. The gravitite frame absorbed most of the kinetic energy, but the tremor was unmistakable: a sharp, vertical jolt that knocked cleaning supplies off shelves and sent Cael stumbling into the corridor wall.
Alarms activated instantly—not the standard evacuation tone but the deep, resonant pulse of a security breach: three low notes repeated in sequence, each one pressing against Cael's eardrums with physical force. The sound was generated by the tower's gravitational defense system, designed to compress the air in specific patterns that stunned weaker Orbiters and disrupted Unregistered Core activity. For Cael, it was a headache wrapped in nausea.
The second explosion hit closer. Twenty-eighth floor, maybe twenty-fifth. The building groaned—an impossibly deep sound, like the voice of something that had been sleeping for centuries and was being rudely awakened. The lights switched to emergency red, painting the corridors in the color of arterial blood.
Cael's earpiece crackled. "All non-combat personnel, evacuate to designated safe zones. Repeat: all non-combat personnel—" The transmission cut to static, overwhelmed by a gravitational pulse that Cael felt in his bones.
This wasn't a drill. The OA ran drills quarterly—controlled exercises where enforcers practiced response protocols and Dwarfs practiced being invisible in increasingly creative locations. Drills were announced. Drills didn't shake the building. Drills didn't come with the sound of glass shattering forty stories up and the distant, terrible percussion of orbital combat.
Someone was attacking the Orbital Authority tower.
Cael moved on instinct—not toward the safe zones (floor B2, behind the gravity recyclers, in a room specifically designed to be uninteresting to attackers) but toward the service corridor that led to the nearest stairwell. The elevators would be locked during a breach, reserved for enforcer deployment. Dwarfs used stairs. Dwarfs always used stairs.
The stairwell was chaos. Other Dwarfs—cleaning staff, maintenance workers, cafeteria attendants—streamed downward in a current of gray coveralls and registration numbers. Their faces held the particular terror of people who understood that they were not important enough to protect. In a security breach, enforcers secured priority assets: the archives, the leadership, the classified research. Dwarfs were not priority assets. Dwarfs were furniture, and furniture burned.
"What's happening?" Fen appeared beside him, eyes wide, a cleaning rag still clutched in his fist like a talisman. "Is it a drill?"
"No."
"Are we—are we supposed to—"
"Basement. Safe zone. Move."
They descended. The stairwell trembled with each new explosion—the attackers were working their way down, floor by floor, which meant they were after something specific and hadn't found it yet. Cael's Hearing orbit, even muffled, picked up fragments from the floors above: the sharp crack of Impact orbits, the hiss of Edge blades cutting gravitite, shouted commands in voices that carried the forced calm of trained soldiers losing control.
And underneath it all, a sound Cael had never heard before: the harmonic scream of multiple high-orbit Cores operating at maximum output simultaneously. It was beautiful and terrifying—a symphony of gravitational frequencies that made the air itself vibrate with power. The attackers were strong. OA-strong. Whoever they were, they'd brought enough firepower to challenge the tower's defenders on their own ground.
They reached the twelfth floor. The stairwell door burst open and three enforcers rushed through, nearly trampling Fen, their orbits blazing—visible rings of distorted light that orbited their bodies in frantic patterns. They didn't see the Dwarfs. They didn't slow down. They were heading up, toward the fighting, and the expression on their faces was one Cael recognized from his own mirror: the expression of people who suspected they were walking toward something they wouldn't walk away from.
Eighth floor. Fifth. The tremors were less severe down here—the building's gravitational dampeners absorbed the worst of the shockwaves before they reached the lower levels. But the sounds of combat were replaced by something worse: silence from the upper floors, punctuated by single, sharp gravitational pulses that Cael's Hearing orbit interpreted as finalities. Fights ending. People stopping.
Third floor. Second. The safe zone was close. Cael could feel the corridor that led to the basement entrance—the gravity here was familiar, worn into the building's structure by his daily passage. Left at the junction, right at the supply room, straight through to the B2 stairwell—
A door exploded inward.
The blast threw Cael and Fen backward. Fen hit the wall and crumpled. Cael skidded across the floor on his back, his head striking concrete, his vision splitting into doubles.
A figure stepped through the destroyed doorframe. An enforcer—but not OA. The uniform was wrong: black where OA wore gray, unmarked where OA bore insignia. An Unregistered militant. Eight orbits blazing around his body in aggressive configurations—all Push, no balance, the signature of someone who'd trained for destruction rather than discipline.
The militant scanned the corridor. His eyes passed over Fen's unconscious form without interest—a Dwarf, irrelevant—and landed on Cael.
Something changed in his expression. His orbits pulsed, scanning, reading Cael's gravitational signature with a precision that the OA's corridor sensors hadn't matched. He took a step forward.
"Well," he said. His voice was calm. Professional. The voice of someone who'd found what he was looking for. "There you are."
He crossed the corridor in three strides, grabbed Cael by the throat, and lifted him off the ground with one hand. The grip was gravitationally enhanced—each finger exerting independently calibrated pressure that made escape impossible without orbital force that Cael didn't have. The militant's other hand produced a blade—not gravitite, not steel, but something darker, a knife whose edge seemed to absorb light rather than reflect it.
"Thirteen channels," the militant said, studying Cael's face with clinical interest. "The scouts were right. It's you." He raised the knife. "The First Core sends his regards."
Cael couldn't breathe. The hand on his throat compressed his airway with mechanical efficiency, and his four orbits—passive, weak, useless—fluttered helplessly against the militant's overwhelming field. His feet dangled. His vision darkened. The blade rose, its edge aimed at the center of his chest, at the cracked Core that beat behind his sternum like a trapped bird.
This was dying. This was the weight of ending—not the abstract fear of mortality but the specific, physical experience of a body shutting down under the grip of something stronger.
And inside that body, behind locked doors that had unlocked last night at the stroke of midnight, something answered.
Not gently. Not gradually. Not with the measured awakening of power carefully trained and controlled.
The answer was rage.