he needed to fly the damned thing.
“Lee, you fucking idiot!”
“Sorry, Gunnery Sergeant,” he said. “Got a bit carried away there.”
“You get carried away in this environment, sailor,” the voice told him with a growl, “and you are dead. Move slow. Move deliberate. Move methodical. Know what the fuck you’re doing, and why.”
Well, he knew what he was doing. He was trying to reach the form of a space-suited Marine sprawled in the dust eighty meters ahead. And why?
Well, he was a Navy hospital corpsman. And that’s what corpsmen did, even if this was a particularly realistic bit of training, rather than a real combat deployment.
Carefully, he rose on unsteady feet and began moving forward again, more cautiously this time. Under lunar gravity, his body weight plus his armored suit and equipment weighed less than 24 kilos … but it still massed 144, which meant that once he got himself moving in any direction, stopping or turning could be a bit tricky. He’d done this sort of thing plenty of times in simulation … but this was his first time in a suit working in hard vacuum.
It was tough to see his target. Marine chamelearmor responded to ambient lighting and reflected the colors and forms of the environment, allowing it to blend in with the background to an amazing degree. The effect wasn’t perfect in a complicated environment like a city or forest, but the surroundings here were simple: stark black sky and gray powder dust. At this range, Lee couldn’t see his target at all with his own eyes; his helmet display, responding to a suit transponder, threw a bright green reticule onto his visor to mark the target’s position.
Moving more deliberately now, he crossed the gently rolling regolith, following his own leaping shadow. Ahead, a featureless mound, one among many, resolved itself into a space-suited male figure, lying on his side.
He put on the metaphorical brakes before he reached the body, dropping to a kneeling position as he came to a halt in a spray of powder-fine dust. The patient had his back to Lee. He pulled the man over, peering down into the helmet visor. A fist-sized hole high in the right shoulder was leaking air; Lee could see the sparkle of ice crystals dancing above the tear and see crimson blood bubble as it welled up into a vacuum and froze. An ugly mass of frozen blood partly filled the wound.
“You’re gonna be okay, mac,” he called over the combat frequency. “Hang on and we’ll get you patched right up!” There was no response—not that he was really expecting one. The patient’s suit display on his chest showed winking patterns of red, green, and yellow. The suit breach was sealed around the wound, but the heaters were out, commo was out, and O2 partial pressure was dropping fast.
The suit’s AI was still working, though. Lee pulled a cable connect from the left sleeve of his own armor and snicked it home in the receptacle at the side of the patient’s helmet. A second later, a full readout on the patient’s condition was scrolling down through his awareness, the words overlaid on the lower-right side of his visual field. The wound, he learned, had been caused by a probable laser hit estimated at 0.8 megajoule. The bolt had burned through his shoulder armor, which had scattered much of the energy. There was no exit hole, so the energy that had not been dispersed by armor or the explosive release of fluid from superheated tissue had stayed put, cooking muscle and bone. Nasty.
Lee began going through the oft-practiced checklist. The challenge with giving combat field first-aid to someone in a vacuum was that you had to work through the guy’s suit. On Earth—or in an Earthlike environment—the order of medical priorities was fairly straightforward: restore breathing, stop catastrophic bleeding, treat for shock … and only then tend to such lesser concerns as immobilizing broken bones or bandaging wounds. The old mnemonic “ABC” established the order of treatment: airway, breathing, circulation. First establish an open airway, then restore breathing, and finally stop the bleeding and treat the shock caused by blood loss and trauma.
That order held true in space as well, but things became a lot more complicated. Suit integrity was the first concern; the larger the hole in a Marine’s vac armor, the faster and more explosive the loss of air. In space combat, a corpsman also had to be part suit mechanic. Keeping a Marine’s space armor alive was vital to keeping the Marine inside alive as well.
Mark VIII vac armor was smart enough to seal off a hole to prevent pressure loss. A spongy, inner layer of the armor laminate was a memory plastic designed to press tightly around the man’s body at the point of a leak, serving both as tourniquet and as a seal against further air loss. Sometimes, though, a complete seal just wasn’t possible. This one, for instance. The suit had formed a seal around the hole in order to maintain internal pressure, but the laser burst had punctured the Marine’s thoracic cavity … and penetrated the left lung as well. Air was spilling from the Marine’s bronchial tubes into his chest cavity—a condition called pneumothorax—and the air, mixed with blood, was bubbling away into space through the punctured suit. As the air drained away, the condition became the opposite of pneumothorax—vacuthorax—and massive lung tissue trauma.
And suddenly, things were getting much worse very quickly. As Lee rolled the armored form over, a crusty, glittering patch of frozen blood and water clinging to the wound suddenly dissolved in a spray of red vapor. He caught his mistake immediately. When he’d changed the Marine’s position, he’d moved the wound from shade into direct sunlight. The wound had been partly plugged with blood-ice, but in the harsh light of the sun just above the eastern lunar horizon, the temperature on that part of the armor soared from around −80° Celsius to almost boiling. In seconds, the ice plug had vaporized, reopening both the wound and the partly plugged hole in the armor.
There was no time for anything but plugging that leak. Reaching into the case mounted on his right thigh, he pulled out a loaded sealant gun, pressed the muzzle up against the hole, and squeezed the trigger. Gray goo, a quick-setting polymer heavily laced with programmed nano, squirted over the hole and wound together, almost instantly firming to a claylike consistency, then hardening solid. He checked the Marine’s suit readout again. Internal pressure was low, but steady.
But the guy was still bleeding internally—probably hemorrhaging into his thoracic cavity—and his heart was fluttering, atrial fibrillation. The patient was on the verge of going into arrest.
Lee reached for another tool, a Frahlich Probe, and slammed the needle down against the armor, directly above the heart. The probe’s tip was housed in a nano sheath, which literally slipped between the molecules of the man’s vac armor, then through skin, muscle, and bone to penetrate the patient’s chest while maintaining an almost perfect air-tight seal. Leaving the needle in place, he pulled off the injector, then attached a reader. The device fed his implant a noumenal image of a glistening red, pulsating mass—the beating heart—and let him position the tip of the needle more precisely, at the sinus node at the top of the right atrium. Easy … easy … there!
Now he could program the probe to administer a rapid-fire series of minute electric shocks directly into the sinus node, regularizing the beat. He watched the readout a moment longer as the probe’s computer continued to feed electrical impulses into the patient’s heart. The fibrillation ceased, the heartbeat slowing to a fast but acceptable 112 beats per minute.
The patient’s breathing was labored. He couldn’t tell, but he suspected that the left lung had collapsed. Certainly, it had been badly damaged by both wound and vacuum trauma. With the wound sealed over, the best Lee could do for the patient now was evacuate him.
“Nightingale, Nightingale,” he called. “This is Fox-Sierra One-niner. I need an emergency evac. Patient has suffered massive internal vacuum trauma. Suit leak is plugged and wound is stable.
