"But you had them inside?"
"Yes, I'm sure of it."
I said, "Ricky, you see the swabs anywhere?"
"Yes. They're right here by the airlock."
"You want to bring them out to us?"
"Oh sure, guys." He laughed harshly. "No way I'm going out there in daylight. You want 'em, you come get 'em."
Mae said to me, "You want to go?"
"No," I said. I was already holding the animal open; my hands were in position. "I'll wait here. You go."
"Okay." She got to her feet. "Try and keep the flies off. We don't want any more contamination than necessary. I'll be back in a moment." She moved off at a light jog toward the door. I heard her footsteps fade, then the clang of the metal door shutting behind her. Then silence. Attracted by the slit-open carcass, the flies came back in force, buzzing around my head, trying to land on the exposed guts. I released the rabbit's hind legs and swatted the flies away with one hand. I kept myself busy with the flies, so I wouldn't think about the fact that I was alone out here.
I kept glancing off in the distance, but I never saw anything. I kept brushing away the flies, and occasionally my hand touched against the rabbit's fur, and that was when I noticed that beneath the fur, the skin was bright red.
Bright red-exactly like a bad sunburn. Just seeing it made me shiver.
I spoke into my headset. "Bobby?"
Crackle. "Yes, Jack."
"Can you see the rabbit?"
"Yes, Jack."
"You see the redness of the skin? Are you picking that up?"
"Uh, just a minute."
I heard a soft whirr by my temple. Bobby was controlling the camera remotely, zooming in. The whirring stopped.
I said, "Can you see this? Through my camera?"
There was no answer.
"Bobby?"
I heard murmurs, whispers. Or maybe it was static.
"Bobby, are you there?"
Silence. I heard breathing.
"Uh, Jack?" Now it was the voice of David Brooks. "You better go in."
"Mae hasn't come back yet. Where is she?"
"Mae's inside."
"Well, I have to wait, she's going to do cultures-"
"No. Come in now, Jack."
I let go of the rabbit, and got to my feet. I looked around, scanned the horizon. "I don't see anything."
"They're on the other side of the building, Jack."
His voice was calm, but I felt a chill. "They are?"
"Come inside now, Jack."
I bent over, picked up Mae's samples, her dissection kit lying beside the rabbit carcass. The black leather of the kit was hot from the sun.
"Jack?"
"Just a minute ..."
"Jack. Stop fucking around."
I started toward the steel door. My feet crunching on the desert floor. I didn't see anything at all.
But I heard something.
It was a peculiar low, thrumming sound. At first I thought I was hearing machinery, but the sound rose and fell, pulsing like a heartbeat. Other beats were superimposed, along with some kind of hissing, creating a strange, unworldly quality-like nothing I'd ever heard. When I look back on it now, I think that more than anything else, it was the sound that made me afraid.
I walked faster. I said, "Where are they?"
"Coming."
"Where?"
"Jack? You better run."
"What?"
"Run."
I still couldn't see anything, but the sound was building in intensity. I broke into a jog. The frequency of the sound was so low, I felt it as a vibration in my body. But I could hear it, too. The thumping, irregular pulse.
"Run, Jack."
I thought, Fuck it.
And I ran.
* * *
Swirling and glinting silver, the first swarm came around the corner of the building. The hissing vibration was coming from the cloud. Sliding along the side of the building, it moved toward me. It would reach the door long before I could.
I looked back to see a second swarm as it came around the far end of the building. It, too, moved toward me.
The headset crackled. I heard David Brooks: "Jack, you can't make it."
"I see that," I said. The first swarm had already reached the door, and was standing in front of it, blocking my way. I stopped, uncertain what to do. I saw a stick on the ground in front of me, a big one, four feet long. I picked it up, swung it in my hand. The swarm pulsed, but did not move from the door.
The second swarm was still coming toward me.
It was time for a diversion. I was familiar with the PREDPREY code. I knew the swarms were programmed to pursue moving targets if they seemed to be fleeing from them. What would make a good target?
I cocked my arm, and threw the black dissection kit high into the air, in the general direction of the second swarm. The kit landed on edge, and tumbled across the ground for a moment. Immediately, the second swarm began to go after it.
At the same moment, the first swarm moved away from the door, also pursuing the kit. It was just like a dog chasing a ball. I felt a moment of elation as I watched it go. It was, after all, just a programmed swarm. I thought: This is child's play. I hurried toward the door. That was a mistake. Because apparently my hasty movement triggered the swarm, which immediately stopped, and swirled backward to the door again, blocking my path. There it remained, pulsing streaks of silver, like a blade glinting in the sun. Blocking my path.
It took me a moment to realize the significance of that. My movement hadn't triggered the swarm to pursue me. The swarm hadn't chased me at all. Instead it had moved to block my way. It was anticipating my movement.