Abyss Deep. Ian Douglas

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Abyss Deep - Ian  Douglas

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Thomason snapped over the platoon channel. “Hold up!”

      The next two Marines in line waited, clinging to handholds on the doughnut. Thomason was watching what was happening inside by means of cameras mounted on the helmets of the first four-­man fireteam.

      “Okay!” Thomason said. “Fireteam two! Go!”

      Rogers and Jorgenson slipped through the lock, followed by Beaudet and Tomacek. They were followed by the next fireteam … and the next. I wasn’t tapped in to the visual channels, but I could hear the radio calls of the Marines already inside.

      “Watch it! Watch it! Tango at oh-­one-­five!”

      “Moving! Firing!”

      “Rogers! Morrisey! To your right!”

      “Got him! Tango down!”

      “Sobiesky! You and Marshall secure the hatch! The rest of you, with me!”

      More and more of the platoon’s Marines vanished through the doughnut, until it was my turn. I grabbed the handholds and pulled myself forward. I could feel the nanoseal closing around me, clinging to me, sliding down my torso as I moved … and then I was through.

      The interior was a large compartment some ten meters across, dark except for emergency lights spaced around the bulkheads. Directly ahead, my helmet light illuminated a massive tangle of pipes and conduits—­the business end of the nano-­D mining equipment eating its way into the heart of Atun 3840. A dead tango floated in the air nearby, wearing what looked like a Chinese space suit without the helmet. A MAW drifted nearby.

      Magnetic accelerator weapons aren’t a real good choice for close combat inside a pressurized environment. I wondered how well trained these idiots were.

      A Marine fireteam on the far end of the hab module used an applicator gun to smear a two-­meter circle of nano-­D against the bulkhead, and then one of them gave the smoking ring a hard kick. Gunfire cracked and clanged as magnetic rounds snapped through the opening and punched through bulkheads, a cacophony of noise after the silence of our passage through vacuum. Corporal Tom Morrisey screamed, and I saw a flash of incoming data on my med channel.

      “Corpsman!” Thomason yelled. “Marine down!”

      I was also getting environmental warnings, and a station Klaxon began sounding an alert. Some of the rounds that had missed Morrisey had punched through the facility’s outer hull. The station’s external nanomatrix would seal the holes, but that would take a few moments, and the air pressure was dropping precipitously in the meantime.

      That wouldn’t hurt us, of course, but it put the station’s crew in danger.

      I kicked off the bulkhead and glided across the compartment to Morrisey. His right arm was missing below the elbow, the armor there was a tangled mess, and blood was spurting from the wreckage in a bright orange-­red arterial stream that was breaking off into darker gobbets as it spiraled with his rotation. I collided with him and stabilized his spin, then jacked into his armor for a direct readout.

      The magnetically accelerated slug had sliced through his elbow with kinetic energy enough to shred armor and amputate the lower arm. Normally, Marine armor will guillotine shut above a serious leg or arm wound, stopping the bleeding and, more important, stopping the suit from venting its air into vacuum. That last might be a problem in another few minutes, but right now the cabin pressure was high enough that the armor’s slice-­and-­seal function hadn’t triggered. Morrisey’s brachial artery was pumping out blood fast; he would be dead in a few minutes if I didn’t stop the bleeding.

      I did a quick scan to make certain he didn’t have any head trauma—­it looked like it was just his arm that had been hit, but you never know—­then thoughtclicked a key directing Morrisey’s suit to autoinject a jolt of anodynic recep blockers into his carotid artery. Heart rate 155 … BP 149 over 90, respiration 36 and gasping, rapidly elevating levels of both adrenalin and noradrenalin.

      Morrisey stopped screaming as the nanoanadynes started shutting down the doloric receptors in his thalamus and the insular cortex, blocking the pain signals as they reached his brain. “Jesus, Doc!” he said. “I can still feel it! It feels … weird!”

      “That’s because your pressure receptors are still firing. Don’t worry. You’re going to be fine.”

      I hoped. His extremities were already starting to cool, which meant he was already shocky. I ordered his suit to clamp down on his upper arm to reduce the brachial artery flow, then raise its internal temp slightly and relax the external pressure on the arteries leading to his head to interrupt the shock response.

      I had to make a quick decision, though. The armor clamp would slow the bleeding, but wouldn’t stop it by itself. I could cram a packet of skinseal into the injury, and let that seal off the wound … or I could order his suit to slice off what was left of his arm well above the bleeding stump. The guillotine at his elbow, obviously, was smashed; the next working blade was eight centimeters up, midway up his humerus. The nanonarcs would block the pain, or most of it, but he would still feel it, and that would increase the risk of shock.

      Shock or not, I elected to cut. Skinseal is great stuff, but it’s better for minor bleeding. And if the mining station’s outer hull didn’t seal off the leaks, Morrisey would have other problems in a moment if he started losing air.

      I again checked his nananodyne levels, then thoughtclicked through the link to trigger the suit’s chopper. Another chunk of his arm came off, a squat cylinder encased in black armor, but the bleeding stopped at once.

      “God,” he said. “I’m gonna be sick… .”

      “No,” I told him. “You’re not.”

      Vomiting inside a space suit is very serious business, and can lead to drowning. Morrisey’s armor was already firing antiemetic ’bots into his carotid artery, but it wasn’t enough.

      The vomiting reflex is triggered in the area postrema, a tiny nub on the floor of the brain’s fluid-­filled fourth ventricle snugged up against the cerebellum. There are a number of different chemical pathways leading to emeses triggers, but most involve a neuropeptide called substance P, or SP, which is found in both the brain and the spinal cord and which is associated with inflammation, pain, and shock.

      I pulled my N-­prog from my M-­7 medical kit and thought a quick series of commands into it. The device, in turn, reprogrammed some of the nananodyne bots now circulating through Morrisey’s brain, ordering them to block out the SP … and also to shut down the cholinergic receptor input from his inner ears, since his vestibular system—­reacting to zero-­G—­was also screaming at him. The reprogrammed ’bots would add to the suit’s antiemetic response, helping to stifle Morrisey’s nausea before he vomited inside his helmet.

      “Yeah,” Morrisey said. “Yeah … that’s … that’s better, Doc. Thanks.”

      I gave his readouts a final check. His BP was stabilizing at 125 over 70, and his respiration was a bit slower now. “You’ll be fine,” I told him. “Some time in sick bay, and we’ll grow you a new arm, better than the old.”

      He nodded inside his helmet. “I know.”

      I sent him back to the doughnut to await a medevac. Now that we had our foothold on board Zeta, more Marines were on the way in, along with support vessels and transports to haul away the wounded.

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