A short story set in the Integration era.

The station’s maintenance level smelled like recycled atmosphere and someone’s poor decision about a grease fitting, which Maren Okafor found both familiar and deeply comforting. Familiar because she’d run eleven insertion approaches through industrial infrastructure in the past three years and every single one smelled like this. Comforting because it meant nothing on this level had been cleaned recently, which meant no one had been paying attention to it, which meant her team was probably alone here.

Probably.

— Integration: Fireteam resonance: 74. All members registered within active tracking range.

The communication landed in her awareness the way team data always did at operational depth, present before she turned attention to it, already there. Seventy-four resonance. Three years with this particular configuration of four other humans. The number meant a lot of things: that she could feel the ambient texture of each of them through her Echo, that synergy windows had opened up that weren’t available to units with newer team histories, that she’d stopped needing status reports for most of what she needed to know.

Dex Korin was two meters ahead of her, moving with the particular economy of a very large person who’d learned how to make himself small. Frame 34 translated in his movement as a kind of solidity the floor seemed to notice — not mass exactly, more like the quality of something the system had decided was load-bearing. Her overlay pinned his data in a soft bracket at the edge of her vision: Korin, D. — Vanguard — IL 38 — HP: 94% — SP: 89% — Status: clear. Armor up, weapons holstered. Dex moved with everything holstered unless he’d already decided it was time.

Behind her, Wen Chori was doing a competent job of not showing that she was nervous. Her overlay read Chori, W. — Specialist — IL 21 — HP: 100% — SP: 100% — Status: clear — the clean numbers of someone who hadn’t been hit yet and whose system had nothing to report. Wen was three missions with the team. Her positioning was good. Her spacing was good. But her Signal was running at a threshold frequency that Maren’s Team Sense translated as attention divided — situational awareness and operational anxiety sharing the same bandwidth.

It would sort itself. It usually did, by the third time you’d been in a space where it mattered.

Solis Veth was last in line, her kit heavy enough that Maren could hear it even through the sound-damping of the approach. The kit of an IL 24 Medic who prepared for the things she couldn’t predict. Veth, S. — Medic — IL 24 — HP: 100% — SP: 96% — Status: clear. Her Echo at 22 was the team’s second highest, and Maren could feel it in the ambient resonance the way you felt a second heat source in a room — not her own warmth, but present, near, attending to things she wasn’t naming aloud.

And ahead of all of them, already at the corridor junction thirty meters up, invisible because she was doing her job correctly: Tace Renn.

Renn, T. — Scout — IL 29 — HP: 100% — SP: 88%. That two percent stamina drop since they’d entered the maintenance level meant Ghost Step was running, had been running since they’d stepped off the access point. Maren had never seen Ghost Step from the outside, only the absence it created. Inside, Tace described it as the world becoming something you moved through instead of over. Her Flux read was what made it more than stealth: the skill let her exist at a slightly different density than the space she occupied, reading the building’s system energy the way a high-Signal operator read visual information — ambient, constant, not something she had to concentrate to do.

Maren pressed one finger against her own forearm — their shorthand for status report, no audio — and felt the response: a brief warmth in her Echo sense, Tace’s equivalent of I have you. I’m reading. Wait.

They waited.

TACE

The station’s layout was a text she’d read four times in the prep room and was now reading in the original, with the corrections that prep rooms never had.

The maintenance level matched. The pressure differentials matched. The specific asymmetry of the lighting intervals — this company used cheaper fixtures with a 0.8-second flicker variance that her overlay had catalogued in the first sixty seconds as an exploitable pattern — aligned with the briefing data precisely enough that she trusted the rest of it up to the point it stopped being true.

The junction at grid 7-Charlie stopped being true.

Ghost Step ran as a pressure at the back of her awareness — not silence, exactly, but the sensation of existing in the space between other people’s perception and the floor. Her Flux handled the environmental read, the small variations in system energy density that told her where attention was concentrated in the building above her. The facility’s system infrastructure was corporate-standard: functional, maintained at minimum specification, and designed by people who thought security was a sensor problem rather than a presence problem. Her Signal 31 read their personnel signatures like print: two guards at the next intersection, unscheduled, not in the briefing data. She tracked their respiration patterns through the thin ambient emissions of their overlays broadcasting at corporate frequency.

[Motion signatures logged. Personnel count updated. Deviation from briefing intelligence: two additional, grid 7-Charlie.]

She could feel the signature of their designations without activating any specific skill — one Sentinel energy, something dense and anchoring about their system presence; the other less legible, probably Specialist, Signal-light. The corporate installations trained their staff in bulk, and it showed in the overlay texture: competent in their lane, not reading outside it.

She flagged the deviation for Maren. A specific pulse-sequence over their resonance channel, the one they used for personnel count changed, hold for route assessment.

She felt the Commander’s acknowledgment as a brief settling in the ambient: processing, waiting, trusting.

Tace stood very still and read the junction for ninety seconds. Ghost Step let her do it without the signatures noticing — she was part of the maintenance level’s texture, another variable in the background hum of the facility’s infrastructure. She found what she was looking for in the second pass: a secondary maintenance branch off the east wall, bypassing 7-Charlie entirely, emerging sixty meters farther toward the aide’s holding location and past the guards rather than through them. Two and a half minutes of transit. No registered personnel in the branch.

She assembled the route as an overlay share — not a verbal description, a map fragment, system-formatted, the geometry of the decision rendered so Maren could evaluate it directly rather than trusting Tace’s summary.

Maren’s response came immediately: confirmed, proceed.