The metal walls of this pipe felt like they were closing in, squeezing every inch of my crawling space. The air inside was no longer just filtered oxygen; it felt heavy, slick with chemical vapor residue and the faint smell of Sarin penetrating the filter of my mask. I could feel every beat of Dahlia's heart against my back through the damp Kevlar protection. Every scrape of my elbow against the pipe's steel surface echoed in my ears like cannon fire. In this acoustic maze, silence was our lifeblood. Juri, how far is the vertical point to the main control system? I asked through the haptic vibration in my jaw. Twelve meters more, Jax. But I have to warn you. The vibration sensors ahead are set to micron sensitivity. One accidental metal scrape will trigger a high-dose nitrogen gas dischar

