"The module has the ability to extract dissolved oxygen from the water," Aten Randt said. "You won't suffocate."

"Wonderful. But that still leaves starvation," said Cainen.

"The lake has an outlet—" Aten Randt began, and that was as far as he got before the engine derailed with a sudden jerk. The roar of the collapsing tunnel drowned out all other noise; Cainen and Aten Randt found themselves briefly airborne as they were hurled from the passenger area of the rail engine into the sudden, dusty darkness.

Cainen found himself being prodded awake an indeterminate time later by Aten Randt. "Wake up, Administrator," Aten Randt said.

"I can't see anything," Cainen said. Aten Randt responded by shining a beam from the lamp attached to his weapon. "Thanks," Cainen said.

"Are you all right?" Aten Randt asked.

"I'm fine," Cainen said. "If at all possible I'd like to get through the rest of the day without hitting the ground again." Aten Randt clicked in assent and swept his beam away, to look at the rock falls that had them closed in. Cainen started to get up, slipping a bit on the rubble.

Aten Randt swung the light beam back to Cainen. "Stay there, Administrator," Aten Randt said. "You'll be safer." The light beam dipped to the rails. "Those may still have current in them." The light beam trailed off again, back to the caved-in walls of their new holding pen. Whether by accident or design, the bombardment that struck the rail line had securely closed in Cainen and Aten Randt; there were no openings in the wall of rubble. Cainen noted to himself that suffocation had once again become a real consideration. Aten Randt continued his examination of their new perimeter and occasionally tried his communicator, which seemed not to be working. Cainen settled in and tried not to breathe too deeply.

Some time later Aten Randt, who had given up his examination and cast them both into darkness while he rested, flicked his light back on, toward the wall of rubble closest to the base.

"What is it?" Cainen asked.

"Be quiet," Aten Randt said, and moved closer to the wall of rubble, as if trying to hear something. A few moments later, Cainen heard it too: noise that could have been voices, but not of anyone local, or friendly. Shortly thereafter came the blasting noises. Whoever was on the other side of the wall of rubble had decided they were coming in.

Aten Randt moved back from the wall of rubble at speed and came up on Cainen, weapon raised, blinding him with the light beam. "I'm sorry, Administrator," Aten Randt said, and that was when it dawned on Cainen that Aten Randt's orders to get him to safety probably only went so far. On instinct more than thought Cainen twisted away from the light beam; the bullet intended for his center mass instead went into his arm, spinning him around and slamming him into the ground. Cainen struggled to his knees and caught his shadow splayed before him as Aten Randt's light beam fell on his back.

"Wait," Cainen said, to his shadow. "Not in the back. I know what you have to do. Just not in the back. Please."

There was a moment, punctuated by the sounds of rubble blasting. "Turn around, Administrator," Aten Randt said.

Cainen turned, slowly, scraping his knees on the rubble and putting his hands in his coat pockets, as if they were manacles. Aten Randt sighted in; given the luxury of picking his shot he leveled his weapon at Cainen's brain.

"Are you ready, Administrator?" Aten Randt said.

"I am," Cainen said, and shot Aten Randt with the gun in his coat pocket, aiming up into the light beam.

Cainen's shot coincided with a blast from other side of the rubble wall. Aten Randt didn't appear to realize he had been shot until blood began flowing out of the wound in his carapace; the wound was barely visible to Cainen through the light. Cainen saw Aten Randt look down at the wound, stare at it for a moment, and then back at Cainen, confused. By this time Cainen had the gun out of his pocket. He fired at Aten Randt three more times, emptying his projectile cartridge into the Eneshan. Aten Randt leaned forward slightly on his front legs and then fell back an equal amount, the bulk of his large body settling on the ground with each of his legs splayed out at angles.

"Sorry," Cainen said, to the new corpse.

The space filled with dust and then light as the rubble wall was breached, and creatures bearing lights on their weapons flowed through. One of them spotted Cainen and barked; suddenly several light beams were trained on him. Cainen dropped his gun, raised his good arm in surrender and stepped away from Aten Randt's body. Shooting Aten Randt to keep himself alive wouldn't do him much good if these invaders decided to blow holes in him. Through the light beams one of the invaders came forward, jabbering something in its language, and Cainen finally got a look at the species he was dealing with.

His training as a xenobiologist kicked in as he ticked off the particulars of the species phenotype: Bilaterally symmetrical and bipedal, and as a consequence with differentiated limbs for arms and legs; their knees bent the wrong way. Roughly the same size and body plan, which was unsurprising as an inordinately large number of so-called intelligent species were bipedal, bilaterally symmetrical and roughly similarly sized in volume and mass. It was one of the things that made interspecies relationships in this part of the universe as contentious as they were. So many similar intelligent species, so little usable real estate for all their needs.

But now the differences emerge, thought Cainen, as the creature barked at him again: A broader torso and abdominal plain, and a generally awkward skeletal structure and musculature. Stump-like feet; club-like hands. Outwardly obvious sexual differentiation (this one in front of him was female, if he remembered correctly). Compromised sensory input thanks to only two small optical and aural inputs rather than the optical and aural bands that wrapped nearly entirely around Cainen's head. Fine keratinous fibers on the head rather than heat-radiating skin folds. Not for the first time, Cainen reflected that evolution didn't do this particular species any great favors, physically speaking.

It just made them aggressive, dangerous and damned hard to scrape off a planet surface. A problem, that.

The creature in front of Cainen jabbered at him again and pulled out a short, nasty-looking object. Cainen looked directly into the creature's optical inputs.

"Fucking humans," he said.

The creature swiped him with the object; Cainen felt a jolt, saw a multicolored dance of light and fell to the ground for the last time that day.

"Do you remember who I am?" the human at the table said, as Cainen was led to the room. His captors had provided him with a stool that accommodated his (to them) backwards-facing knees. The human spoke and the translation came out of a speaker on the table. The only other object on the table was a syringe, filled with a clear fluid.

"You are the soldier who knocked me unconscious," Cainen said. The speaker did not give a translation of his words, suggesting that the soldier had another translation device somewhere.

"That's right," the human said. "I am Lieutenant Jane Sagan." She motioned at the stool. "Please sit."

Cainen sat. "It was not necessary to knock me unconscious," he said. "I would have come willingly."

"We had our reasons for wanting you unconscious," Sagan said. She motioned to his injured arm, where Aten Randt's bullet had struck him. "How is your arm?" she asked.

"It feels fine," said Cainen.

"We weren't able to fix it entirely," Sagan said. "Our medical technology can rapidly heal most of our injuries, but you are Rraey, not human. Our technologies don't map precisely. But we did what we could."