I knelt at the edge of the water tower, tightening the laces of her combat boots, as the seventh alarm for the failed gas mask filter pierced the air. The sound dragged me back to the subway station three years ago, where crowds kissed beneath rusted ventilation pipes, swapping the last traces of oxygen through saliva. Her bootlaces were still the same nylon ropes from that day, their dark red bloodstains long dried into scab-brown patches.
Neon moss flickered in the cracks of the rooftop, mimicking the glow of old-century bar signs. She pressed the tip of her left boot against my collarbone: "Your breathing's off." The gritty sole ground against my throat, her tactical pants shimmering with engine oil in the dusk. I synced my breaths to the moss's pulsing rhythm--its fluorescent spores were a new mutation from last month, capable of conjuring hallucinations of embracing radioactive clouds if inhaled. When the boot shifted to my lips, the bite of its metal rivets against my gums snapped me back to clarity.
She snatched the UV flashlight from my belt, its beam sweeping over sweat-stained cotton socks. "Today's ration." As she peeled off the left boot, the sticky sound of synthetic fibers separating from skin tightened the nape of my neck. It echoed those rainy seasons in the bunker, where mold spores coupled on concrete walls, and she'd sliced open the festering wound on my calf with a scalpel. Her foot, perpetually swaddled in combat boots, gleamed pearl-white, the pressure sock's crimson indentations around her ankle resembling a secret totem. It reminded me of the first time she injected me with anti-radiation serum, the needle's cold glide beneath my veins.
When my tongue met the salt crusted in her arch, a stifled sigh spilled from above. Leaning against a fractured concrete pillar, she kept her right boot hovering over my carotid. Moonlight caught the barcode branded into her collarbone--a mark of failed genetic modification. "The stockings we scavenged last month," she said, tilting my chin up with her boot-tip, the nylon still reeking of underground bunker mildew, "were wasted on the water purifier's filter."