II
Getting inside the Barracks was a production. The safety-suits worn outside presumably bore on their outer surfaces all the dust-borne bugs native to Kansas. To carry these bacteria into the Barracks, to be inspired and ingested by Axenites—humans who'd never before had a bacterium inside their bodies—would wipe out the Regiment. Axenites are chemically pure people. They have no immuniological experience. Their gamma-globulin is low, their intestinal walls are thin. They may be killed by a light salting of staphyllococci, a soupcon of strep, or just a pinch of B. subtilis, a buglet as innocuous to "normal" humans as the dust-motes it inhabits.
The Syphon was the only entrance to the Barracks. It opened as the "Wet Gut," a ramp leading downward into liquid disinfectant which finally filled a tunnel, which ran the length of the Barracks. Each trooper, as he walked down into the disinfectant, grabbed the hand-holds at either side to pull himself along. Half-swimming through a turbulent portion that tugged at his suit with cavitations designed to loose the gummiest particle of bug-dirt, he came to a quieter section where he wormed along in silence, watching the man ahead of him, his stay in the antiseptic gauged to make the outside of his safety-suit as germ-free as the inside.
The Wet Gut ended in an upslope. The troopers walked out, dripping, into a hallway returning in the direction from which they'd just swum. This upper arm of the Syphon was a hallway so brilliantly lighted that the trooper had to drop his polarizing shields over his eyes. The air here in the Hot Gut was spiced with ozone from the ultra-violet sources. As each man strode down the Hot Gut at a set pace, his suit was bathed in u-v light from lamps in the ceiling, floor and walls. Just as he was washed sufficiently in the Wet Gut to kill the sturdiest-shelled spore of anthrax, the most insistently cysted protozooan, in the Hot Gut he was laved in actinic radiation powerful enough to afford a one hundred per cent safety factor against his bringing viable bug-dirt into the Barracks. At the very end of the Syphon, so that his safety-suit wouldn't stink of disinfectant or crack from ozone-rot, the trooper was blasted from all sides by a needle-shower of sterile water. Then he was home.
The platoon to the left of the Terrible Third had ballooned and was column-of-squadding toward the entrance to the Syphon. "At ease, men," Hartford said. "Increase suit-pressure one pound. Open and check reserve air-tanks. Close off filters." The men blimped a bit. Their suits sausaged out around their arms and legs. Should some trooper have a pinhole in his safety-suit, the positive pressure within would keep the deadly antiseptic solution from seeping in. "Okay, men. First squad off to the sheep-dip. Check the man ahead of you for bubbles. This is Save-Your-Buddy Week," Hartford said.
Fat-legged and stiff, the men of Third Platoon waddled through the doorway and down the ramp into the bug-juice. One by one they went under, tugging themselves along through the turbulent area, past that; then turning over in three planes so that the man behind them could spot bubbles coming from any part of their safety-suit. A leak, of course, meant Decontamination. Decontamination meant an all-over shave, a load of antibiotics and quarantine. But it was better that one man should suffer this from time to time than that the Barracks should be sullied with a single bit of germ-laden dust.
The pale-green murk of the Wet Gut and the desert brightness of the Hot Gut were the gates of home, and welcome.
Hartford saw the Terrible Third off to their quarters, then got together with Piacentelli to go up to Officers' Country. It was good to un-clam helmets and breathe the inside air, smelling faintly green from having swept across the gardens on Level Eight. Hartford shucked off his blue suit and draped it over a refreshing unit. The device buzzed into action, washing, drying and recharging the safety-suit with fresh filters and reserve air and water. The moment the refresher had grunted an okay to his safety-suit, Hartford carried it, clean and sweet as the day it had left the Goodyear plant on Titan, to hang it up in his locker, ready for his next foray onto bug-dirt.