Calloway had taken a second position.
The Board had processed it in the three seconds since Ethan reached the catwalk: Calloway was not at the east end where his radio transmissions had placed him. He had moved during Jackson's approach — using the radio transmissions as cover, calling coordinates that placed him at one location while physically relocating to another. The structural analysis put him at the catwalk's junction point, behind the secondary support column, with a narrow angle through the steel-grid railing at Jackson's current position against the east wall.
Jackson was fighting. The Board logged it in the same three seconds: he had moved eight inches from where he had been when Ethan arrived, the movement of a man who was trying to get to a position with better cover and whose body was not cooperating with the instruction. The right-side wound was not arterial. It was not nothing.
"Mercer." Tim's voice on the radio. "I need your position."
The second shooter from the north entry had been four seconds of contact-through-continue. The man had gone down. He had not stayed down. The Board calculated a 40-second recovery-to-functional from that impact — 40 seconds during which Ethan had covered forty feet of catwalk, applied direct pressure to Jackson's wound, called Tim to the west face, and now had Calloway's angle on his right and a recovering second shooter somewhere on the dock floor below.
The math was a three-body problem.
He ran it. The Board ran it at Stage 4 maximum — the sharpest processing he had ever asked of it, the accumulated two and a half years of tactical vocabulary deployed simultaneously against a geometry that had three threat vectors and one acceptable outcome.
The math came back: no clean solution. At Stage 4. No sequence that covered all three bodies — Jackson, Calloway, second shooter — and produced Jackson alive without exposing Ethan to a shot he couldn't cover. The margin was negative. He was one person.
He felt it start.
Not a decision. Not a choice. The braid.
The Board's pattern-matching was running at absolute limit when the Tells — which he had not consciously engaged, which had been running as ambient background the way it always ran — sent a signal that was not a lie-detection signal and was not a body-language read. It was something the Board had never produced before: a real-time prediction based on Calloway's physical micro-tells feeding directly into the Board's spatial model. The Tells read the weight shift in Calloway's stance through the catwalk railing six meters away and the Board updated its geometric model of Calloway's next position in the same processing cycle.
The Net was at maximum. And the Net's maximum threat-vector calculation was feeding into the Board's updated model. Three signals. The same calculation. The same geometry.
Braided.
Five seconds.
The clarity was not comfortable. It was terrifying the way absolute precision was terrifying — the world at its actual resolution, stripped of the cognitive comfort of uncertainty. Every person in the warehouse was a data point the Board was running at perfect resolution simultaneously: Calloway's next position (the Board saw it before Calloway completed it); the second shooter's recovery timeline (the Net estimated the moment the man's hands would regain grip); Tim's position relative to the west stairwell door (the radio bearing gave it to within six feet).
The one path through all of it.
He moved.
The tourniquet was from his duty belt, accessed in the twelve seconds the Board had calculated between Calloway's pre-movement tell and the completion of the position shift. He got Jackson's right arm up — not a question, Jackson cooperated because Jackson was fighting and cooperating was fighting — and the tourniquet went on at the position the Board identified as optimal for the wound location. Ten seconds. Calloway was still moving.
"West stairwell. Now." Into the radio. Not Calloway's coordinates. Tim's.
He got Jackson behind the catwalk's secondary support column. The column was six inches of structural steel rated for the building's load-bearing requirements — the Board had calculated it as sufficient to absorb a standard round from Calloway's service weapon at this range. Jackson went behind it with enough momentum to stay there.
Calloway had completed the position shift.
The catwalk's structural grid had a gap at the third support intersection — a manufacturing variance from the original installation that appeared in the building's 2018 maintenance report. The Board had it. From Ethan's position, the gap lined up with Calloway's left shoulder. Not a kill shot. Not meant to be. Meant to be the shot that ended Calloway's operational capacity for the next thirty seconds.
He took it.
The sound of the catwalk three floors below — the second shooter's hands on the dock floor as he recovered — registered at exactly the moment Tim Bradford came through the west stairwell door at the base level.
The Board had calculated this.
Tim didn't need a situation report. He had a position and a direction. He moved.
Five seconds ended.
The nosebleed hit.
The Board went from maximum to noise. Not gradually — the abrupt silence of a signal that had been burning at a frequency the hardware could not sustain and had tripped a circuit. The Tells went dark simultaneously. The Net gave one final pulse and went quiet.
He was on the catwalk railing. Then he was against the catwalk railing. Then he was not holding onto the catwalk railing.
His knees were on the steel grating. The sound of the warehouse was suddenly very specific and very present — Tim's voice at the lower level, Jackson's breathing, the distant noise of responding units outside the north entry. The tunnel narrowed.
He made it to the base of the stairs.
Tim found him there.
"Mercer." Tim's voice was close. The Bradford version of urgency, which was not louder, only more present. "What's your status."
"Jackson," Ethan said.
"Jackson's behind the column. He's not bleeding more." A pause. "Second shooter is down. Calloway is hit and cuffed. What's your status."
"Stairs," Ethan said.
He was against the base of the stairwell wall. His left hand was over his nose. The Board was dark in the specific way of an instrument that had shut down rather than broken — not a malfunction, a circuit protect. He was aware of the dock floor, the steel wall, Tim's presence, and very little else.
"I'm here," Tim said.
He was aware of this.